Snow guards for corrugated roofs. Installing snow retainers on the roof, features of snow retention systems How to properly snow retain on the roof

Many regions where the winter is quite snowy are faced with the problem of snow falling off the roofs of houses. Snow sliding from a great height is a great danger and can not only damage property, but also take several lives.

To avoid such a problem, it is enough to put a snow retainer on the roof of the house. This design will allow snow to be retained on the roof until the moment when it turns into water.
To install a snow retainer on the roof, several factors should be taken into account: the angle of the roof, the material of the cover and the snow content of the region.

Types of snow retainers

There are two categories of snow retainers - snow cuts and snow barriers. The former are a barrier to snow and completely hold it until the very spring, while the latter, as it were, cut the layer of snow into small pieces so that the snow safely descends in small pieces.

Also, snow retainers differ in the material from which they are made.

Tubular

This snow retainer is a structure made of vertical plates and pipes inserted between them. The plates are screwed to the roof with screws.

Such a snow retainer can be easily installed on a roof with a large slope (up to 60◦).

lattice

Has enough simple design- these are the brackets between which the grate is fixed. The entire snow retainer is almost always made of galvanized steel and can be painted, which will allow you to choose a snow retainer of the same color as the roof cover (if we are talking about metal tiles or corrugated board).

Such a snow retainer belongs to the category of a snow barrier, because it completely holds the snow until it melts.

But there is one minus - if there is too much snow, then the grating can bend and deform under the pressure of the formation.

lamellar

This type of snow retainers is installed on a matello tile with a small amount of snow in the area.

Lamellar snow retainers are made of the same color and material as the roof cover, which is very convenient and does not spoil general form building.

On numerous photos of snow retainers for the roof, you can see that the design is a simple metal triangles. This type of snow retainer is usually used for roofs with a small slope (up to 30◦).

dotted

Such snow retainers are usually used as an addition to tubular or lattice snow retainers, as they retain the minimum amount of snow.

This type can only be installed during the installation of the roof, because it is attached under the roofing material.

wooden log

The simplest and most budgetary type of snow retainers. Such a log is installed more often on a wooden cover and it is fixed on special fasteners.

Installing a snow guard

When the owner of the house still decides to buy a snow guard, he immediately thinks about the question of how to install snow guards? There are several answers. It all depends on the material of the cover, the degree of the slope of the roof, etc.

It is worth remembering that it is impossible to install snow retainers near the eaves overhangs less than 40 cm, because this will entail the convergence of the eaves along with the snow.

Installation on a metal roof The installation of a snow retainer on a roof made of this material is as follows (the sequence is indicated for a tubular snow retainer):

• Mark the place where the snow retainer will be attached
• Strengthen the crate
• Assemble the construction kit, but without fixing
• Fix roofing material and drill holes
• Screw brackets
• Insert tubing into brackets

In addition to the tubular snow retainer, a lattice or lamellar one can also be installed on the metal tile.

Installation on a corrugated roof

As well as for metal tiles, tubular, lattice and lamellar snow retainers can be used for a corrugated roof.

The installation of the structure is also practically the same, only the crate is not required for installation.

Seam roof installation

Installation is different in that the brackets are attached to the fold.

Seam roof installation:

• Attach the clip to the fold
• Drill 2-3 holes
• Pin

Installation on a soft roof

On this type of roof, the snow retainer can only be installed during the installation of the roof. On such a roof, either a point or tubular snow retainer is installed.

The installation of a tubular snow retainer is the same as on corrugated board or metal tiles.

The sequence of installation of a spot snow retainer:

• Draw a checkerboard pattern
• Place the fastener under the cover
• Fasten with self-tapping screws

In any case, no matter which roof the snow guards are attached to, it is worth remembering that the roof, in any case, must be cleaned once a week, regardless of the amount of snow, or a heating cable must be installed so that the snow melts immediately.

Photo of snow retainers on the roof

The Russian winter is especially severe, which means that the owners of private houses receive certain losses every year - and all because of the snow. The white hat on the house only seems light and harmless, even artistic, but in fact, without proper action, it is a source of danger. Snow that has fallen can not only damage garden buildings, break a fence or beat a dog, but also cripple a person.

And therefore, the current SNiP provides for a roof security system, into which without fail snow guards are included on metal tiles as one of the most slippery roofings. Do you have the same roof? Be sure to install them!

Why is snow avalanche dangerous?

Not without reason every spring in periodicals you can find reports of problems due to the convergence of ice and snow masses from the roofs of both private and apartment buildings. Usually the consequences of an avalanche-like convergence of snow are not particularly tragic, but there is always damage from them. That's why the snow on the roof needs to be given Special attention, and not only in terms of cleaning from it.

After all, you are not always at home, you have business trips, vacations and, in the end, an ordinary person is not immune from getting to the hospital. Where is it better to put special equipment or enclosing elements, which, for a moment, are provided for by modern building codes and regulations. Is your roof made of metal tiles? You are completely at risk!

Judge for yourself:

Are snow guards required for metal roofing?

Literally five years ago, almost no snow guards were heard on the domestic market. At that time, only large developers offered to install some snow stoppers on the roof, although in Western countries such elements have long been considered mandatory when installing any pitched roofs.

In these countries, a house that was built without snow guards is considered unfinished and does not comply with legal safety standards. It can't even be insured. Think about it, because the average thickness of snow cover on roofs in the Russian climate is one and a half meters!

Let's explain in more detail. If you once had the good fortune to rake white and fluffy snow at the gates of the cottage, then you probably know how heavy it really is. And therefore, you understand well how dangerous it is for a thick layer of snow to fall on someone's head or on your favorite car. Yes, often the roof itself does not withstand such loads, from which the integrity of its coating is destroyed and leaks occur. Let's put it this way: in Russia, you need to install snow retainers on any pitched roof especially for metal.

Despite all the advantages of this modern roofing material, the metal tile has a number of disadvantages. So, it has a high thermal conductivity, it quickly heats up during the thaw period and the snow on it melts just as quickly. And at night, at the first cold snap, it quickly freezes - in the morning you get ready-made ice blocks. And the main danger is that an avalanche of snow and ice from such a roof can occur at absolutely any moment.

The snow retainers themselves, together with roof bridges, stairs, parapets and fences, constitute the roof security system. Thanks to their strength, work on the roof itself becomes safer, because a standard snow retainer is able to withstand pressure from 70 to 300 kilograms. Two birds with one stone!

Types of snow retainers by function

And now let's see what exactly the modern market offers from this series. So, certain types of modern snow retainers have their own specific functions:

• the first to partially skip snow, in small quantities;
• others delay it completely and are called snow barriers;
• the third type of snow retainer is designed only to slightly increase the friction of the existing roofing. As you guessed, in order to slow down the speed of the snow down. These are usually placed only on soft roofs.

And in each case, the metal tile needs its own specific type of snow retainers. Let's explain in more detail with an example. So, according to official data, the snow cap of roofs in the territory of the central region of Russia can reach several tens of tons on average per building. Therefore, in such areas it makes no sense to install standard snow retainers - here we need those that can prevent partial snow from falling, and partially let it through.

Why are they like this? The fact is that if there is too much snow on the roof, it creates strong pressure on the truss system, and when it melts, it causes even more problems. Therefore, it makes sense to reduce its volume, while not getting rid of it completely. And of the partially blocking snow, the most popular are lamellar snow retainers, lattice and tubular.

In other cases, when snowfalls in the area do not cause any particular problems, it is more rational to install snow stops or teeth. These will evenly distribute the snow cap over the entire surface of the roof and maintain the integrity of its structure.

Types of snow retainers in shape and aesthetics

Modern snow retainers, in addition to their functions, also have differences in shape and design. And for a roof made of metal, this moment is of great importance. It's all because of profiling: not every snow retainer that can be easily fastened to a flat seam roof can be adapted to waves or between them. But it is impossible to fasten to only one roofing at all.

Snow barrier systems: hold on as much as possible

Snow retainers-snow stops are most often found on roofs made of metal. Since ancient times, simple logs on hooks have been used in countries with winters generous with snow (today, too, but more for decorative purposes), but today only their metal counterparts are used in mass production.

Their main task is to keep as much snow as possible on the roof, and to let it fall down as little as possible, where the pedestrian zone is located and the car is parked. But these are suitable only for those roofs, the angle of inclination of which does not exceed 30 degrees.

Snow guards-slats: a lightweight version

Lamellar, or corner snow retainers are the most affordable and simple snow stoppers in their design. They are also called snow barriers. These are long strips, which are bent in the form of a triangle. As a rule, such products are included in the standard roofing assortment already with finished metal tiles. Naturally, they do not possess significant strength, and are limited to everything by the total height of the roofing itself. And such a corner is fixed on the metal tile with three roofing bolts.

Corner snow retainers are made, like the spot ones, which we talked about above, from the same roofing material as the metal tile, and they are also economical and quite high in efficiency. Although most often it is corner snow retainers that are installed on the roof of a metal tile.

Note that if we are talking specifically about metal tiles, then it is rather difficult to install plate and corner snow retainers on it. The fact is that the metal tile has a wavy profile, so it is possible to nail such only in the upper part of the wave, and it is far from the crate. And if the snow retainers are not fixed directly to the crate, in especially snowy winters, when the snow masses converge, they will simply be torn right out of the roofing, and imagine the scale of the repair you will have to do.

Tubular snow guards: for special loads

Modern tubular snow guards are a solid prefabricated structure of long pipes and support brackets. They are usually made of aluminum or galvanized steel, with a protective polymer coating. The diameter of such pipes varies from 20 to 35 mm, and the walls of the pipes are about 1.5 mm thick.

Tubular snow retainers are usually installed 3 meters long, in a solid line, on the second wave from the eaves. They are better than all existing snow-retaining systems and prevent the avalanche of snow, without breaking at the same time, and without arching under its weight.

Spot systems: for even distribution of snow

Enough the new kind snow retainers for roofs made of metal tiles - spot. We are talking about the so-called snowstops. It is recommended to install from 5 to 8 snow stops for each square meter, supplementing them with a snow-retaining grate. Their main task is to evenly distribute snow and its pressure on the roof structure. Secondary - to serve as some kind of support on which you can lean with your feet during roofing works, and you do not have to step on the fragile waves of metal tiles.

For each individual type of roof, snow guards are made in their own shape, and with their own bracket. Therefore, never buy those point snow retainers for metal tiles that were originally used, for example, for a soft roof.

"Horseshoes" for metal tiles

Relatively recently, snow stops appeared on the Russian market, which are designed specifically for roofing from metal tiles and are made by cold forming.

They have a curved look that repeats the radius of a standard wave, and are remarkably attached to almost any area of ​​​​such a roof. Thanks to this innovative technical solution, the problem of fixing snow guards on profiled roofs in terms of their reliability and aesthetic appearance is completely solved. The attachment points of such elements themselves must be treated with polyurethane sealant.

Such snow retainers have more advantages in the particular case with metal tiles than corner ones. The fact is that such snow stops have more mounts (four, to be exact), and they themselves are much smaller. And in aesthetic terms, such roofing elements win, remaining less noticeable.

Polycarbonate "teeth"

But this is already a novelty of the market:

What calculations need to be made in advance?

Before attaching snow retainers to metal tiles, be sure to draw up a project for the location of snow retainers on the roof. For what? This is necessary so that in the future the bracket you install does not accidentally end up in those places on the roof where there are actually no battens, and you have already drilled a hole and are now thinking what to do with it.

Further, before installing snow retainers on a metal tile, you need to think through all the points and take into account all the data. Indeed, their durability and functionality directly depend on the competent installation of snow retainers. And therefore, it is necessary to calculate the required number of them in accordance with SNiPs 2.0.10.07.85 for such specific steps:

• Roof slope. To obtain such data, use a conventional goniometer or apply special formulas. If the slope of the roof has a slope of more than 15 degrees, it means that future snow retainers will be affected by a large load. Therefore, in this case, it is better to give preference to a tubular snow retainer, which is usually highly durable.
• Type of roofing, namely the features of the metal tile. For all its types, the universal fastening of snow retainers is suitable, but if the Monterrey metal tile is laid on your roof, then the metal tile supports should have a ledge, and thanks to it you will no longer have to reinforce the crate.
• Metal tile color. We recommend that you choose snow retainers to match the shade of your existing roofing so that the snow retainers themselves are not conspicuous later, unless you plan to specifically highlight them. Also suitable option roofing elements, which are darker by a tone or two.
• Please note that rubber gaskets and special roofing screws should be included with the selected snow retainer. It is very important that all fasteners on the metal tile then have 100% tightness.
• Learn the inherent weather in your region. For example, according to the snow and wind load map.
• Determine number of rows snow retainers. This is easiest to do by special table, where your snow region is indicated, the angle of the roof and the distance between the brackets.

Your main task when calculating snow retainers for your roof is to evenly distribute the load on these roofing elements and on the entire truss system. And remember, brackets cannot be mounted close to the roof overhang, there are strict rules in this regard:

How to install snow guards?

In the case of metal tiles, it is most reliable to mount snow retainers, like any other roofing safety elements, even at the stage of construction of such a roof:

But even otherwise, you will see that installing snow guards on a metal roof is a pleasant job. The only difficulty is to screw the roofing screws into the metal roof, and then properly seal them.

The easiest way is to close the hole from the roofing screw with a modern silicone sealant, the heat resistance of which is in the range from -50°C to +180°C. As you understand, even in the harsh Russian latitudes, there are rarely harsher climatic conditions.

Perform the installation of snow retainers according to the following specific steps:

• Step 1. Installation of snow retainers, as a rule, begins with determining the installation location. If we are talking about a metal tile, then this is the area of ​​the first or second wave from the eaves. The main thing is that the snow retainers are located above bearing wall in order to evenly distribute the load. You can install snow retainers both around the entire perimeter of the roof, and selectively, in the right places.
• Step 2. The supports are attached to the roof with the help of hardware, which are included in the kit, 2 pieces per support. And it is important that the hardware gets into the rafters or at least into the roof sheathing. Otherwise, with a large convergence of snow, the traps may not withstand the loads, and will come down with an avalanche.
• Step 3 Once the snow retainers are installed, tubes are inserted into them. The tubes are interconnected and extended to the desired length, and their joint is fixed with self-tapping screws. From the extreme supports to the ends of the tubes, the distance should be 15-20 centimeters. As a result, the total installation step should not exceed 70 centimeters.

Proper installation of snow retainers on metal tiles guarantees a long service life of these elements!

Here is another such process in detail:

And a more detailed video tutorial from one of the manufacturers of such snow retainers:

Popular questions and analysis of errors

And now we will analyze with you what you can not do when installing snow retainers on a roof made of metal. Listen, this is valuable advice.

Mistake #1. Why tear off the brackets?

If you have heard about how the brackets were torn off along with the snow, there may be several reasons:

1. Incorrectly distributed snow loads on the roof.
2. An incorrect installation has been made.
3. The self-tapping screw was screwed only into the coating, or an additional bar was not provided.
4. Only one row of snow retainers was installed on long slopes.

Yes, metal tiles in terms of mounting roofing elements are the most capricious coating. Here, indeed, the waves do not make it easy to set the same bar, but still, in no case should it be mounted only in metal.

Mistake #2. Where do leaks come from?

Let's also consider this point. During the installation of sheets of metal tiles, the self-tapping screw is screwed into the end of the wave. And in order to keep rainwater and debris away from it, it must be protected with a simple EPDM gasket.

The durability of such an elastic band is much lower than that of the metal itself, and after 5-10 years there will simply be a hole in this place for water to get inside roofing cake. Therefore, the only way out is to either treat such joints with additional sealants, or use tubular snow retainers, and only at the eaves.

Mistake #3. Why does the mount fly out?

Another mistake is the small removal of the snow-retaining element beyond the support, which, with the slightest lateral shift, can lead to the departure of the entire tube or grille from the mount. The optimal distance is 15-20 centimeters, where the element protrudes beyond the extreme part of the support.

Mistake #4. What leads to deformation of the supports?

It is also impossible to install only supports, without the snow-retaining elements themselves. The fact is that the supports are designed only for loads in the direction from the slope, and if there are no horizontal elements in the form of lattices of logs or tubes, then the snow pressure can sometimes be lateral. Especially in the region of the valleys on complex roofs. And all this will lead to damage to the supports. An insufficient number of hardware and their short length also lead to problems.

Mistake #5. When the snow breaks through the fence?

Another common mistake is a bad fit. connecting elements between gratings or pipes, or their complete absence. There is a big risk that in places where the connection is weak or absent, a breakthrough of the snow mass will occur, and it will bend the accompanying roofing elements.

Mistake #6. If the snow retainers failed?

And, finally, the last mistake, if the installation of snow retainers is carried out according to a too sparse scheme, each of the supports already has a more increased load. This will invariably lead to damage to the support itself and the roofing that is under it.

The main reason for such errors is the incorrect calculation of the installation of the snow retention system, the mistakes of the installers and the unreasonable desire to save money. If too much snow mass acts on the console, the extreme supports are always damaged, and because of them, even chain reaction all along the line.

Here is a good and detailed video tutorial on how to properly install modern snow guards on a roof such as metal tiles:

And finally, valuable advice: do not forget that during the first year of operation of the snow retainers, it is necessary to check the tension of the bracket bolts about once every 4 months. After that, the check can be carried out only once a year, during a routine inspection of the entire roof.

That is why it is more convenient to install snow retainers in the first year of operation of the roof, since the metal tile anyway provides for frequent inspection of all its fasteners at first, and it is more convenient to combine all these tasks in time. Good luck!

It was found that on the roof of a house with an area of ​​​​only 40 square meters. m can accumulate about 5-8 tons of snow. If there are no snow guards on the roof, then one can imagine what will happen to a person passing by when a huge mass of snow suddenly falls on him. In this case, the owner of the house may be punished, up to criminal liability, since according to the laws Russian legislation, the owner of the property is fully responsible for the nearby territory of his housing. In addition, snow melting can cause serious damage to both personal property and someone else's.

Types of snow retainers: corner, lattice, tubular.

Some people do not attach much importance to anti-landslide devices, worrying that they will spoil the design of the roof, but in fact this opinion is erroneous, since such systems, on the contrary, add touches of completeness. Due to the fact that snow retainers are safety devices, it is impossible to neglect their installation in any case. Accordingly, many will have the question of how to install snow retainers on the roof correctly, because not everyone has the opportunity to hire expensive specialists. Moreover, sometimes the price for their services far exceeds the cost of the device itself. Before proceeding directly to the installation of snow retainers, you should figure out what types they are divided into.

Types of snow retention systems

An illustrative example of the work of snow retention.

1. Lattice snow retainers are the most popular, as they are considered the most effective. This is the best option, both for high-rise city houses, and for suburban private estates. An important plus is that this type of anti-fall device can be installed on almost any roof, regardless of what roofing material it is covered with. This system usually made of metal and has the appearance of a lattice. Mount it either on hanging or nailed supports.
2. Lamellar (corner) snow retainers, which are made of the same material as the coating, can be mounted on a roof made of metal tiles and corrugated board. This is the most a budget option. However, their installation is possible only on a roof whose slope angle does not exceed 30 degrees, otherwise they will be ineffective.
3. Snow stops look very similar to hooks. The installation of snow stops is carried out mainly on roofs with a soft roof, or they are used as additional elements that enhance safety in winter period. Nowadays, they are made of transparent plastic, which makes them invisible.
4. Tubular snow guards are in no way inferior to lattice ones and are a versatile, modern and highly efficient device that prevents sudden snow from the roof. This design is a connection of several pipes with special bracket-supports. They can be installed on the roof of corrugated board, tiles, as well as this great option for seam roofing.

Thus, it turns out that the most best options There are two types of anti-landslide systems: lattice and tubular.

For some, the first system is suitable, and for some, the second. But in order to install the selected snow retainer on the roof, you need to know that there are individual installation rules for each type. If you decide to produce it yourself, then you will need to stock up on a standard set of tools that is suitable for installing both devices. It includes:

• ladder;
• drill;
• screwdriver;
• roulette;
• hammer;
• level.

Rules for installing tubular snow retainers

Scheme of installation of a tubular snow retainer.

You can install these anti-landslide systems both on a roof that is just under construction, and on a finished one. They can be located on the roof in a checkerboard pattern and horizontally in one or more lines. They are installed above skylights, porches or walkways. In no case should they be placed above the cornice overhang.

Tubular snow retainers are attached perpendicular to the crate with special brackets, which, in addition to the fastening function, play the role of a uniform load distributor on the truss system, which prevents the snow retainers from “pulling out” from the roof. The brackets are directly fixed with metal screws. They should be located in places where there are load-bearing walls. The distance between the fasteners directly depends on the angle of the roof and the length of the slope. Usually it is somewhere around 0.5 m or 4 mounts per 3 meters. They should be mounted butt-to-butt, while it is necessary to set them exactly according to the level.

If the slope on the roof is long, then such security systems must be installed in several rows. When installing tubular snow retainers, rubber washers must be placed between the roofing material and the supports. Such a measure will ensure tightness in places where fasteners pass and prevent leaks. In addition, such washers allow you to adjust the installation plane.

Rules for installing lattice snow retainers

Recently, with the advent of tubular systems in private construction, lattice snow retainers are increasingly used only for tiled roofs. To install lattice systems, it is necessary to purchase universal either suspended or nailed supports, through which they are placed on the roof. Nailed supports are attached to the roof sheathing with self-tapping screws, and suspended supports are hung on the sheathing using a special metal hook. Unlike other snow retainers, lattice systems can be installed directly along the edge of the eaves.

Types of snow retainers

lattice

lamellar

Installation of a lamellar snow retainer

Snow stopper

Where to install

Snow guards keep the mass of snow

• roof area;
• roofing material;
• tilt angle;

Double row installation

Installation of snow retainers

Installation of a tubular snow retainer

Lattice snow guard on the eaves

Snow guards on the roof

Snowshoes on a soft roof

Tubular

Installation instructions shingles, including the installation of snow stops:

The lack of snow protection can lead not only to damage to the roofing and drainage systems but also cause damage to passers-by and parked cars.

To avoid such a nuisance, you can install a special snow retainer.

The device and installation of snow retainers on the roof is not such a complicated process as it seems at first glance and is accessible even to a beginner in the construction business.

In this article, you will learn why you need and how to properly install snow retainers on the roof of a private house.

Snow guard - a special design that allows snow not to fall from the roof, that is, the snow does not come off in one layer. Only melt water will flow down the gutters. Many people think that it is not necessary to install such snow retainers, but as practice has shown, this important detail, which should not be neglected.

Two main functions of such an important roof structure can be distinguished:

1. prevents sharp and sudden descents of a mass of snow from the roof itself;
2. keep the snow on the roof so that it melts there.

There are several types of such a design, and choosing them, it is necessary to take into account several important factors:

• direct angle of inclination of the slope;
• how much precipitation will fall in the area (snow);
• What material is the roof made of?

There are two main types of such a structure:

• type of snow retainer that passes snow through itself;
• the second type is snow-proof.

The choice of any of the proposed designs depends on personal motives, as well as on the factors mentioned above.

Snow retention in action

It is interesting that in different stores there are different names: snow blocking fences, snow guards and so on. It is likely that the names characterize the functions of such installations.

For example, snow barriers keep all the snow on the roof (of any size). And the snow will melt on the house in its natural way. The snow will not melt even in parts. Snow cutters - by name it is clear that this design allows you to divide a whole piece of snow cover into small pieces.

Some parts fall, others melt right on the roof surface. The advantage of the construction is that the snow does not fall in a continuous layer, which ensures the safety of people, and also does not spoil the roofing.

Of course, snow retainers are different in shape, size, they differ in the material of manufacture. And before choosing, you should focus on how much snow should linger.

Varieties of design, advantages

The most popular version of such structures is tubular type.

By itself, this unit is a simple design of brackets into which two tubes of the same diameter, approximately 15-30 mm, are inserted.

In fact, this type can be attributed to the universal and can be applied to any material (metal, tiles, wood, and so on).

And according to professionals, it is this type of design that is considered the most effective.. In addition, it can be installed on the roof that has been in operation for a long time.

The bracket itself looks like a simple plate with “outlets” for pipes. Often its height is not more than 15 cm. It is attached to the pitched part with a special horizontal stick.

To do this, take special screws that can be attached to the metal.

NOTE!

When installing this type of structure, it is necessary to install it along the line of the load-bearing wall. This is necessary so that the load is divided evenly. The essence of the operation of such a device is the gradual transmission of snow (the snow will pass between the pipes).

This version of the snow retainer is popular and has received the status of the most hopeful installation. Also, the tubular structure must be installed exclusively in one line, runaway option is excluded. If the design is in the color of the roof, then it is almost invisible on the roof.

The process of mounting such a system is quite simple:

• mark the holes and drill them with a drill;
• assemble the kit itself, but do not tighten the bolts;
• the existing assembled bracket must be fixed through the roof to the crate;
• attach the lower part of the structure to the eaves ( at the level of the bearing wall);
• now just connect the components by tightening the bolts.

tubular type

Another good option rescue from improper snowfall - snow stops (hooks). By the name it is clear that outwardly such structures resemble hooks.

But they can't hold a lot of snow, so it is best to use them in cases where the roof will be cleaned in continuous mode. Often such hooks are mounted on soft shingles.

Experts advise using this option as an auxiliary to other, more reliable systems, in places where there is a lot of snow.

Snow guard - hook

Lattice type snow retainer. This type of construction is suitable in places where there is a large amount of snow, since special grating able to withstand strong pressure. Snow is kept on the roof, and only melt water flows down.

Install them at a large angle. The efficiency of such an installation is affected by its height (lattice height). The color of the grille can be matched to the color of the roof.

The maximum height reaches 20 cm.

lattice type

The corner version of the snow retainer is relevant where there is not so much snow. Most often they are mounted on corrugated board or metal tiles, because the structure itself is made from these materials.

As the name suggests, outwardly, this type of installation resembles a corner on which there are special fasteners for mounting. It is not recommended to install on slopes over 30 degrees.

Attach them directly to the roof itself, you can arrange them randomly or in one line.

Angle view

Some prefer to use wooden log as a way to hold snow. The option is not very common. You can meet him on the rooftops different type, for example, on a shingle roof. It is attached to the roof with large hooks.

L Naturally, the size of the log affects its capabilities, that is, the larger it is, the more snow it can hold. To have the effect of such a design, it is worth attaching it at a distance of 2-3 cm from the roof.

This causes a small amount of snow to melt and run down the drain, while most of the sediment remains on the roof and melts naturally.

Do-it-yourself installation of snow retainers on the roof

How to install snow guards on the roof? If you yourself decide to install snow retainers, then you need to take into account the type of roof and the amount of rainfall.

After that, already buy what you need and start the mounting process itself.

In fact, there is nothing complicated here, you just need to know some rules for installing such a design.

If you are building a house from scratch, or changing the roof, immediately think about installing such structures. This will help you save time, effort and nerves.

The installation process itself does not take much time and does not require serious preparations.. It is enough to know a couple of rules and step by step to execute the existing algorithm of actions.

Since metal roofing is the most common type of roofing, it is worth considering the option of installing it on such a surface. For more information about installing snow protection on metal roofing, click here.

CAREFULLY!

Its very design suggests that snow will fall on it very often, and its smooth surface cannot hold snow on its own. During the day, it begins to melt and go off in layers, and this can lead to scratches on the surface of the metal tile, which in turn will lead to corrosion and damage to the coating.

On the roof of such a plan, you can take different types of structures:

• tubular;
• lattice;
• corner.

Installation of tubular snow retainers:

• first step - outline where exactly the snow retainer system will be located;
• costs enhance crate with a special additional bar;
• an important stage of installation, assembly of the structure, but do not tighten the bolts;
• we begin to fasten the roofing material, where it is necessary to make holes on top for the fastening itself. Such holes should be located only on the lower wave, to the one adjacent to the crate itself;
• next comes the attachment of the structure to the slope, using bolts 8 * 60 mm. Be sure to waterproof the holes with rubber pads. The very same step between the bracket depends on two factors, on the slope and length. For example, a step of 50 cm is enough, even for the most powerful design;
• the last step of the installation of the system - pipe insert. Do you have any questions? Watch the video below.

Installation of a tubular snow retainer

Fastening step

It is important to remember that it is necessary to mount the system only above a load-bearing wall.

Installing a snow retainer on other materials

Decking is another popular type of roofing.. Like a metal tile, it has sensitivity to temperature changes.

Installing a snow retainer on such a roof is critical. Read more about installing snow protection under corrugated board here.

When the snow melts during the day and freezes in the evening, icicles are formed that can scratch the material, and this over time will lead to the fact that the galvanized coating deteriorates and scratches form in those places, as a result of which material starts to rust.

If you choose such a roofing material, you can also use tubular or lattice snow retainers.

In fact, installing a structure on corrugated board is not a very complicated procedure, and almost no different from installation on a metal tile.

Installation of the structure on corrugated board:

1. the fastening itself is carried out through the material;
2. be sure to reinforce the crate;
3. small holes for fasteners should be reinforced with rubber gaskets;
4. installation of the structure should be carried out only on the lower part of the wave of the material.

Hook mounting

In cases where the structure is attached to an already finished roof covering, it should be understood that you will have to disassemble it in order to strengthen the crate and it is logical to think about this in advance - during construction.

Mounting example various kinds roofing

Hole marking

Useful video

Video instructions for installing a tubular snow retainer:

Conclusion

Such an element as a snow retainer is necessary on the roof of any building, regardless of style and location. Installing an additional element will allow your roof to maintain its strength and reliability, and also help to ensure the safety of others.

When choosing the right and high-quality design, carefully study what it is made of. Whatever type of snow retainer you choose, it is not necessary to install it around the entire perimeter, since they can be correctly positioned only in the right places on the roof.

It is enough just to install them in the most dangerous places and this will ensure the effective functioning of additional elements and at the same time save money spent on roofing equipment. Be careful when making a decision, consult with experts and your choice will be fully justified.

Self-installation of snow guards on the roof #8212; types and order of installation

Roof safety is one of its mandatory qualities, along with functionality, durability and beauty. Snow retention systems are designed to provide this safety. What it is, what they are for and what they are - we will talk about this, and also give advice on how to install snow retainers with your own hands.

Why do you need snow guards on the roof?

Russian winters are full of surprises: either snowfall, or frost, or thaw. And this often leads to emergencies and injuries. Especially dangerous are sudden descents from the roofs of snow and ice. They can do a lot of trouble: injure bystanders, damage the roof, gutters, climate control equipment (air conditioners), cars parked near the building, cut off electrical wires.

To prevent these unpleasant, and sometimes tragic, incidents, it is necessary to install snow retention systems on the roofs of buildings. For Russian reality, they have not yet become a generally recognized phenomenon, although in the West, for the adoption of a house under construction, snow retainers are necessary condition. Without them, it will be impossible to insure the building.

Does this mean that snow retainers are always needed on any roofs? Not at all. You can do without them in cases where the roof has a large slope (more than 60 °), the snow simply will not linger on it. But the most dangerous slope of the roof is from 20 ° to 35 ° - snow retainers are necessary on such roofs.

These devices can also perform another function: to act as one of the safety elements for a person who clears snow from the roof. If necessary, they will keep a person from falling. Most of all, this applies to lattice and tubular snow retention systems.

Types of snow retainers

Snow guards can be adapted to a certain type of roof or be universal and used on roofs made of any materials: sheets, rolls, natural tiles.

Tubular

For the first time, such systems were used a long time ago in the Alps and Bavaria, and they were called "snow-retaining logs." Today, this structure consists of metal pipes in one or two rows and brackets to which the pipes are rigidly attached. In turn, the brackets are fixed to the roof - to the crate or rafters. The smaller the distance between the fasteners, the stronger the tubular snow retainer.

lattice

They are made of a metal profile, which is assembled in the form of a lattice, reinforced with vertical crossbars. To the roof, this design is also attached to the brackets.

Angle or plate

They are made of galvanized metal sheets or a metal roofing profile, mounted parallel to the ridge on the roof of the same material as themselves. Such snow retainers are less durable, they will not be able to hold a large mass of snow. Therefore, they should be installed on roofs with an inclination angle of less than 30° and, best of all, in areas where there is little snow cover.

Metal yokes (snow hooks)

The most inefficient snow retainers. They are designed for roofs minimal slope(up to 15 °) and covered with a soft roof, such as roofing material. Hooks are installed only during construction or overhaul roofing: as the roofing is attached to the crate, hooks are mounted in one or more rows, or along the entire surface of the roof in a checkerboard pattern.

Features of mounting snow retainers

The most durable snow retainers - tubular and lattice - are recommended to be installed on roofs on which snow accumulates in large quantities. Usually they are mounted around the entire perimeter of the roof at the level of the cornice or slightly higher. These systems can be installed both during construction and during operation.

If the budget is limited, snow stoppers can only be installed in the most dangerous places: over footpaths, entrances, car parks, etc.

Installation should start from the edge of the eaves, stepping back from the edge of the roof about 50 cm. Tubular snow retainers are usually located along the line bearing walls so that the load on the roof is uniform. The brackets are fixed in such a way that the distance between them is 60-110 cm. They are mounted using long self-tapping screws with rubber seals to achieve tightness at the attachment point.

It should be noted that snow retainers are not only necessary for safety, but they look great on the roof, give the building architectural completeness. And almost anyone can cope with their installation. Just do not forget about safety: the installation of snow-retaining structures, cleaning the roof of snow and any other high-altitude work must be carried out using a safety cable, mounting belt, and non-slip shoes.

Last revision: 28.11.

One of the most dangerous manifestations of the spring thaw is, as you know, the unpredictable fall of melting snow from the roofs of buildings, often resulting in injury to bystanders (sometimes fatal).

For owners of private houses, it is not difficult to completely remove such a threat, or at least reduce it to a minimum - it is enough to manually remove the snow mass in time, which has not yet completely dried up on the roof surface. In addition, you can simply install snow retainers that allow you to keep snow from unpredictable falling and “bleed” it from the roof surface in small portions.

accumulated in excess snow can destroy (push through) the roofing, and if it comes off too sharply, tear it off or damage the protective layer on the material.

In addition, an unexpected snow mass can break wires, as well as damage or disable air conditioners. To properly install the snow retainer on the roof, we recommend that you read this article.

Types of snow retainers

There are the following types of snow retainers:

Classic snow guards can be made in several versions:

• in the form of brackets fixed on the roof sheathing with two-row metal pipes passed through them. The possibilities of snow retention in such a design can be adjusted by changing the distances between the pipes, as well as between the lower pipe and the roof. By adjusting the mounting pitch of the brackets, it is possible to change the system parameters according to the allowable load.
• in a lattice version, which involves the installation of rigidly fixed brackets with lattice sections fixed to them;
• in the form of lamellar or corner snow retention elements, which are usually mounted on flat roofs from metal materials(metal tiles, galvanized steel, etc.). Such systems are not designed for increased loads and, as a rule, are ineffective.

Installation

Self-installation of plate (corner) snow retention systems on the roof is possible, but subject to certain conditions. So, to install snow retainers on metal tiles, for example, it is necessary that the roof slope angle be no more than 30 °.

Installation of such snow retention elements is carried out in the following order:

• First of all, at selected points of the roof, support brackets (plates with a corner) are installed, made of durable metal, on top of which a decorative overlay made of roofing material is attached.
• in the case of installation of corner-type snow retainers, the latter are mounted in two rows along the height of the slope, alternating through one element;
• in this case, the lamellar elements are attached to each wave of the metal tile, while the corner elements are fixed in each wave along the upper row and through the wave - along the lower row.

When using tubular and lattice snow retainers, their installation is possible both during the construction of the roof and during its operational operation (on the finished roof). In this case, the type of coating used is not significant, since it is possible to fix the brackets on such a surface without much difficulty.

They are installed vertically on the plane of the roof and are fixed on its surface in the most convenient way for you. In the case of fastening the brackets along the joists of the crate, depending on the planned dimensions of the structure, their length can be from 300 to 1000 mm.

Note! On the slopes of a large area, snow retainers can be mounted in several rows (with a solid fence or in a checkerboard pattern).

As for the slope restrictions, this indicator is not standardized for these fence samples. In this case, roofs with a slope angle approaching 60 ° are not taken into account, since in this case the snow on the roof does not hold by itself. An interesting conclusion follows from this that it is possible to completely get rid of problems with snow retention if a roof with a large angle of inclination of the slope (with allowable wind loads) is laid in advance in the project.

The validity of this conclusion follows from the fact that it is much more convenient to clear the roof of snow with a completely flat slope surface without snow catchers placed on it. In the presence of the latter, on the contrary, the removal of snow from the slopes should be carried out as often as possible, which is necessary to remove excess weight from the roof structure.

We note in passing that even in the absence of snow retainers in the northern regions of our country, by the end of winter, a layer of snow on roofs with an area of ​​\u200b\u200babout 80-100 m² can reach an average weight of 8 to 16 tons.

There is another circumstance that should not be forgotten when installing snow retainers with your own hands. We are talking about the use of auxiliary equipment on the roof, without which snow removal can turn into an unsafe event. The composition of such protective devices should include fences (with a building height of more than 6 meters), which are mounted around the perimeter of the roof, as well as a special design roof drains or stairs, allowing you to move freely even on a heavily snowy surface. The perforated surface of these ladders does not retain snow and provides good grip with any type of footwear.

When carrying out such work, no one relieves you of the obligation to comply with safety regulations. Any high-altitude work should be carried out only with a safety mounting belt and shoes that prevent slipping on an icy surface.

Video

Another video about choosing a snow retainer:

Photo

How to install snow guards

The roof of a house is a very complex structure. There may be various devices and devices. One of the roof structures are snow retainers. This is an optional but required element. The fact is that during a snowy winter a lot of snow can accumulate on the roof, and if this mass suddenly comes down, it can do a lot of trouble. In this article we will talk about how to install snow retainers. Let's talk about their varieties and features.

Types of snow retainers

Installing a snow guard is a must. He will be able to protect you from accidents and litigation, in case of damage to someone else's property during an avalanche. And which one to choose? What types of snow guards are available?

The most common option is lattice structures. They are made of metal and can be installed on almost any type of roof. Lattices are quite effective and they are usually used to protect against snow masses in multi-storey buildings. Such structures can be mounted both nailed and hinged.

On metal tiles and profiled sheets, you can install a lamellar type of snow retainers.

Such structures do not work well if the roof slope is more than 30 °.

Lamellar structures are made of the same material as the roof and are relatively inexpensive.

On a roof made of soft material, snow guards can be mounted. They have a hook design. Very often, such snow retainers are installed as additional protection. Through the use modern technologies Snow guards are made of transparent material, which makes them less visible.

Another universal (independent of the type of roof) snow retainer is tubular. It is a bracket with attached tubes. This design retains snow no worse than the lattice.

Among the variety of designs of snow retainers, the most common are lattice and tubular. They are quite effective and are great for all types of roofs. It is about the installation of such products with our own hands that we will talk.

Where to install

Before starting the installation of snow retainers, it is necessary to determine the place of their installation. Installation can be carried out both during the construction of the roof, and already at operated facilities.

The number and location of snow retainers is determined based on several factors. Namely:

• roof area;
• roofing material;
• tilt angle;
• amount of precipitation in winter.

If the roof area is large, and even a significant amount of snow falls, then there should be a lot of snow retainers. They can be installed in several rows, staggered or only in dangerous areas. According to the recommendations of experts, with a slope length of more than five meters, snow retention devices should be placed in two rows. In other cases, depending on the amount of precipitation.

Also, the number of devices will depend on the type of roof. The metal tile and profiled sheet that are popular today are a smooth material. With a slight heating (for example, on a sunny day), snow from such a roof will actively descend. Therefore, it is on such a roof that snow retainers are simply necessary.

As a rule, snow retention devices are mounted above skylights, footpaths, porches and other areas where a large amount of snow can fall off to damage property or human health.

During installation, it is necessary to deviate from the cornice at least 50 cm. An exception can only be the installation of lattice structures, and then provided that the cornice is formed rafter legs roofs.

Installation of snow retainers

Snow guards in the form of gratings have recently begun to give way to tubular structures. But still they are still widely used, as before. It is lattice products that can often be found on a tile roof.

The principle of installation of both types is the same. The only thing is that lattice structures can be installed directly on the roof eaves.

Installation takes place in the following sequence:

• we mark the future location of structures;
• in these places the crate is reinforced with additional bars;
• We assemble snow guards. At the same time, it is not necessary to tighten the bolts tightly;
• in the roofing material we drill holes for fastenings. If the coating is made of metal tiles, then it is necessary to fix it in the lower wave, which is adjacent to the crate;
• we mount the bracket to the crate. In this case, a certain step must be followed. It will depend on the slope of the slope. The larger it is, the smaller the installation step of the brackets should be. As a rule, a distance of 50 cm is enough even for the steepest slope. Fasteners are made using bolts, with the installation of additional rubber seals;
• now we attach the structures of the snow retainers to the brackets.

In this way, you can install snow retention devices on almost any type of roof.

The installation of snow retainers on a soft roof is slightly different.

If the slope of the slope is less than 15 °, then the installation of such devices is generally not advisable. Also, the formation of an "avalanche" is unlikely in the presence of a sprinkle of stone chips. That is why powerful snow retainers are not installed on the soft roof, the presence of snow stops is quite enough.

Such devices are arranged in a checkerboard pattern. The installation itself is done with simple self-tapping screws. In this case, it is not necessary to strengthen the crate. Firstly, snow stops weigh little. And secondly, the soft roof is laid on a continuous type of crate. If the slope of the slope is large, then both tubular and lattice snow retainers can be mounted.

When installing such structures on a soft roof, there is always a risk of damaging the tightness. Therefore, mounting holes must be carefully sealed. This can be done with rubber gaskets or any sealant.

Video

Installation instructions for tubular snow guards:

Instructions for the installation of flexible tiles, including the installation of snow stops.

In regions with snowy winters, there is a common problem - an avalanche of snow from the roof of a house, which can not only cause material damage, but also kill passers-by. You can avoid this problem by installing snow retainers on the roof. These structures allow you to keep the main layer of snow on the roof surface. Only when it melts, the water from the snow can flow freely through the gutters. The type of snow retainers is selected depending on several important factors: the angle of inclination of the slope, roofing material and the amount of snow cover in the region. Let us consider in more detail what types of snow retainers are and what are the features of their installation on different roofs.

Types of snow retainers for the roof

Snow guards on the roof can be bought together with roofing material during the construction of the house, or can be purchased separately when the house is already built. In different stores, such devices can be called differently: snow blocking fences, snow guards, snow stops, snow cutters, snow barriers, snow feet, and of course, snow guards. Such a variety of names is due to the fact that these simple devices can perform different functions.

The first category - snow barriers or snow blocking fences- completely hold the snow on the roof surface. Snow should melt naturally on the roof. The descent of its layers, even partially from the roof, is unacceptable.

The second category is snow cutters- designed to cut a common layer of snow into small pieces. Thus, its energy during the fall is much lower than it would be if the entire layer of snow descended in an avalanche. This is enough to ensure safety.

Roof snow retainers differ not only in shape and size, but also in material and design reliability. First of all, when choosing one or another type of snow retainers, it is necessary to focus on how much snow it should hold back.

The tubular snow retainer for the roof is a construction of brackets into which two pipes with a diameter of 15 - 30 mm are inserted. The total height of the structure is about 15 cm. The bracket looks like a vertical plate with holes for pipes. At the bottom of the bracket there is a horizontal shelf for fastening to the roof slope. Screws for metal 8x60 mm with a hex head are screwed into it. Sometimes the type of bracket may differ depending on what type of roofing material the snow retainer will be used for. The method of installation may also differ.

The structural strength of the tubular snow retainer depends on the distance between the lower pipe and the roof surface. The optimal distance is 2 - 3 cm from the roof to the first pipe and 8 - 10 cm between the pipes.

Important! Tubular snow guards can be installed on roofs with very steep slopes up to 60°. Indeed, in such cases, the snow pressure is very high and its movement occurs very often. On roofs with a slope of more than 60 °, snow retainers are not installed at all, since it is believed that snow does not linger on them and crumbles immediately.

Tubular snow cutters belong to the category of snow retainers, which is designed to cut the snow layer into several parts. These structures are considered the most reliable, able to withstand the powerful pressure of a snow layer and can be used on roofs of any type - from sheet, rolled soft materials, as well as from natural tiles. They are installed around the entire perimeter of the building, along the entire slope. Moreover, the installation of tubular snow cutters is carried out in a continuous row, and not in a run. Sometimes, when the snow load is very high, two rows of snow retainers are placed at a distance of 2 - 3 m from each other.

The fixing of the lower row of tubular snow retainers is carried out above the bearing wall, i.e. at a distance of 40 - 50 cm from the cornice overhang. After installation, they are practically invisible against the background of the roof, because the color of the snow retainers can be matched to the color of the roof. Typically, tubular structures are made of galvanized steel, and are coated on top with a layer of paint to match the color of the roofing material. As a result, the product is durable, non-corrosive.

Lattice snow retainers on the roof have a variety of sizes. Universal type of construction: brackets to which the vertical grille is attached. All parts are made of galvanized steel, painted on top, so that the gratings can also be matched to the tone of the roof. But the size of the lattice can be different. The largest ones are 15 - 20 cm high, but there are also small ones, where the height of the lattice is not more than 5 - 7 cm. Naturally, depending on the size, lattice snow retainers can hold a different amount of snow.

A large steel grating is able to resist a large amount of snow masses with ice floes. As a rule, the entire layer of snow is held on the roof, including the smallest pieces of ice, and only melted water flows down.

Lattice snow guards are installed on long slopes with a rather large slope to ensure that blocks of snow do not fall. The effectiveness of these actions depends on the height of the lattice. Also, the material of the roof does not matter either, almost all materials have their own types of fasteners.

Important! Please note that tubular snow guards are a more durable design. If the volume of snow is too large, the slats may buckle, buckle outwards under the pressure of the block. What does not happen with pipes due to the strength of the structure. The strength of the trellis snowplows is also affected by the shape and reliability of the brackets or guides. You should not buy flimsy products, the same thickness as the grate itself.

There are also designs of lattice snow retainers in which the lattice is welded to the longitudinal pipes. In this case, the product is extremely reliable.

The installation of lattice snow retainers is carried out in a row along the slope eaves. If the length of the slope is more than 5.5 m and at the same time there is a large snow load in the region, then in addition to the lattice ones, other types of snow stops are installed, for example, lamellar ones.

With small amounts of snow, corner snow retainers are installed on the roof. Basically, they are mounted on roofs made of metal tiles or corrugated board, since the snow retainers themselves are made of the same material and have the same color.

As can be seen in the photo showing the corner snow retainers on the roof, they are metal products bent into a triangular structure with two faces and shelves for attaching to the base. The height of such snow retainers is from 4 to 6 cm. They are usually installed on roofs where the slope angle does not exceed 30 °, since they simply cannot withstand a lot of pressure.

Corner snow retainers are fastened directly to the roofing material, including the upper wave of corrugated materials.

Install similar snowplows along the ridge in a checkerboard pattern in several rows, from 2. Distance between rows from 50 cm to 1 m.

Corner snow retainers are not very durable, they are not able to keep a large layer of snow from convergence, therefore they are used in regions where there is not much precipitation. Also, the roof must be regularly cleaned of snow.

Yokes - point snow retainers

Rope snow guards, or, as they are also called, hooks, are not ways to hold back any significant amount of snow, therefore they are used as an addition to lattice and tubular snow guards, as well as on a soft roof with a slight slope.

On a soft roof, snow usually lingers on its own, this is facilitated by the rough surface of the material, sprinkled with granules. For example, on bituminous tiles or roofing material, snow accumulates and is held without problems. And if the slope of the roof is small, then snow is unlikely to come off. Nevertheless, for safety net, point tow rope snow retainers are installed, in a checkerboard pattern at a distance of 50 - 70 cm from each other.

A feature of the yokes is that they can only be installed at the stage of roof installation. They are triangles with a long plate for fastening to the crate. The plate should be located under the roofing material, and is attached to the crate, it is laid on top shingles and hides attachment points. Thus, the roof is protected from leaks.

Wooden logs are rarely used to hold snow. They can be found on an equally rare wooden roof - shingles or shingle roofing. Logs are installed on special hooks that are fixed to the crate or rafters of the roof structure. The larger the diameter of the log, the greater the volume of snow that such a snowplow can hold.

The log itself is located at a small height above the roof surface - 2 - 3 cm. Therefore, melting snow can flow freely to the drains. The rest of the snow is held until complete melting.

Installation of snow guards on the roof

It is best to mount snow retainers together with roofing material. Sometimes it is recommended to install snow guards not around the entire perimeter of the roof, but only over important objects: footpaths, car parking, roof windows and balconies. Installation sites are selected on the basis that when an avalanche descends from a roof with a slope of 35 °, the snow fall zone is 0.4 - 1.5 m from the roof overhang.

The distance from the snow retainer to the cornice overhang should be from 50 cm to 80 cm. It is impossible to mount snow retainers directly on the cornice overhang. The only exception is the case when the eaves are formed by the roof rafters.

Important! If you install snow-retaining structures on or near the eaves, the cornice will inevitably collapse along with the snow-retainers and an avalanche. The lightweight design of the overhang is simply not capable of withstanding such pressure.

The price of snow retainers on the roof depends on the type of product, material of manufacture, size and popularity of the manufacturer's brand. And it can vary in the range from 1.5 to 230 USD.

Metal tile is by far the most common roofing material. But its design itself suggests that snow will fall on it very often. The smooth surface of the material practically does not retain snow. And the sensitivity of the material to temperature changes contributes to the fact that during the day the snow melts and slides down the surface of the metal tile, carrying the entire layer of snow and ice.

Given all this, snow guards for metal tiles are simply an urgent need.

For roofs covered with metal tiles, you can use such types of snow retainers:

• Tubular;
• lattice;
• Lamellar.

The latter are used only on slopes with a small slope and in regions with little snowy winters. In other cases, tubular and lattice structures are used, as the most durable and easy to install.

Produced directly through the roofing material:

• We plan where the snow retainer will be located.
• We strengthen the crate with an additional bar.
• We assemble the snow retainer kit, but do not tighten the bolts.
• We fix the roofing material, and from above we drill holes for fastening. The holes should be located in the lower wave, which is adjacent to the crate.
• We fix the assembled bracket to the slope with 8x60 mm bolts. The holes are sealed with rubber pads. The step between the brackets depends on the slope of the roof and the length of the slope. The greater the slope, the more often the brackets should be located. For example, a step of 50 cm will be more than enough for the most durable construction.

• We insert pipes into the brackets. Or if lattice snow retainers are mounted, then we connect adjacent sets to each other.

We remind you that it is necessary to mount snow retainers above the bearing wall. To install a snow retainer above the roof window, it is necessary to strengthen the crate.

If the slope is longer than 5.5 m, two rows of snow retainers should be installed.

Depending on the type of metal tile, the design of the bracket supports is different. For example, for installation on the Monterrey metal tile, snow retainers are used, the brackets of which are equipped with a special ledge. This makes it possible not to strengthen the crate.

The surface of the corrugated board is as smooth and sensitive to temperature changes as that of a metal tile. Therefore, snow retainers are simply necessary to keep snow on the roof. In addition, the melted snow freezes in the evening, when the next day, again the melted snow begins to move along the roof, the ice scratches the corrugated board. As a result, over time, the galvanized coating is peeled off, scratches appear in which rust develops.

Just like in the case of metal tiles, tubular, lattice and lamellar snow retainers can be used for corrugated board. Most often, tubular snow retainers made of galvanized steel, painted to match the corrugated board, are used.

Installation of snow retainers on a corrugated roof practically no different from mounting on a metal tile:

• Fastening is made through the material.
• The crate needs to be reinforced.
• And the holes for the fasteners should be sealed with special gaskets made of weather-resistant rubber.
• The fastening should be located at the bottom of the corrugated board wave, which is adjacent to the crate, otherwise the sheet will bend and warp.

If you plan to install snow retainers on an already finished roof, you will have to disassemble part of it in order to strengthen the crate. Or you need to take care of strengthening the structure in advance.

To install corner or lamellar snow retainers, reinforcement of the crate is not required, since they are fixed directly into the sheet of corrugated board or metal tiles in the upper wave. The bolt must cut into the wood of the crate, otherwise the structure will turn out to be fragile. Corner snowplow mounts should be located through one wave.

On folded roofs, only tubular and lattice snow retainers are used. The main difference between the installation of tubular snow retainers on a seam roof is that the brackets have their own different shape and attached directly to the fold. Thus, the tightness of the coating is not violated.

As seen in the photo, fastening to folds made with clamps:

• We dress the clip on the fold.
• Drill 2-3 holes.
• We insert bolts with nuts and tighten.
• The step between the supports depends on the slope of the roof. The most reliable option is fastening to each fold.

An indisputable advantage of fastening snow retainers to a seam roof is that there is no need to reinforce the crate. All work is carried out from above, on the finished roofing material. As a result, the design turns out to be quite reliable, since the main snow pressure is distributed along the rebate.

Please note that not all snow retainers for seam roofs are made of galvanized steel. There are copper models. They are not sold as a set, but individually: a pipe section, lower and upper brackets. Prices for copper snow retainers are higher than for ordinary ones, but even a copper seam roof is not a cheap pleasure.

Soft roofing has its own characteristics, which leave an imprint on the choice of the type of snow retainers and the nuances of installation:

• The angle of the roof slope with a soft roof should not exceed 15 °. With such a slope, an avalanche-like snowfall is unlikely. Therefore, powerful tubular snow retainers are practically not used.
• Sprinkling of stone chips on the surface of soft roofing materials traps snow and prevents it from sliding off.
• Due to the fact that a solid form of lathing in the form of sheets of moisture-resistant plywood is used for the installation of a soft roof, there is no need to reinforce the lathing.
• However, all work on the installation of snow retainers on a soft roof must be carried out at the stage of laying the roofing material.

For a soft roof, yokes are most often used, less often - tubular snow retainers.

Installation of tubular snow retainers on a soft roof is practically the same as installation on corrugated board or metal tiles. The disadvantage of fastening such a design is that the fasteners are on top, i.e. seal may be compromised.

Triangular yokes or stoppers are attached using this technology:

• It is necessary to arrange them in a checkerboard pattern in 2 - 3 rows with a step of 50 - 70 cm.
• The yoke is attached to the crate so that the next sheet of soft tiles hides the mounting plate, and the yoke triangle itself remains on top.
• Fastening is made on self-tapping screws.

If the roof has already been installed, the yokes can also be fixed from above, in which case weather-resistant rubber gaskets are used.

In conclusion, I would like to say that in the conditions of our snowy winters, the use of snow retainers on roofs is mandatory. However, it is still necessary to clean the roof once a week or two, depending on the amount of rainfall. You can get rid of the need to clean the roof and trap snow by installing a heating cable under the roof. Thus, the snow will immediately melt and flow down the drain. The formation of icicles and snow avalanches is excluded.

Most of the regions of our country are famous for their snowy winters. But this quite ordinary natural phenomenon quite often brings considerable trouble to the owners of private houses. Snow driftscollecting on the roof over a certain period only seem light and fluffy. However, this is a misleading impression, since they consist of numerous layers, which makes the overall cover dense and very massive.

The layers accumulated on the roof can pose a very real danger, especially in the spring, when thaws begin, and the upper layers swell with moisture, become heavier, and the lower ones turn into ice. From the metal roof, the snow-ice mass melted from below can easily go down, not only damaging the drainage system, causing damage outbuildings, but also threatening serious injury to people or animals. Installation snow retainers on the roof of a metal tile will allow you to avoid many of these unpleasant moments, increase the safety of the operation of the roof, increase the durability of the roof, and the building as a whole.

Why do you need a snow retention system on the roof?

The climatic features of many Russian regions are such that in winter the abundance of snowfall often reaches very impressive figures. It is clear that avoiding the formation of snow caps even on a perfectly smooth roof will not work, unless, of course, the slope of the slopes is made too steep (more than 60 degrees).

The snow that has fallen in calm weather gently falls on the roofing, and in the afternoon, under the influence of direct sun rays and increase in temperature, it begins to thaw. By evening, an ice relief crust forms on it, as the temperature drops. Such a surface becomes very favorable for fixing subsequent snow layers.

The thickness of the snow layer during the winter period can grow to very significant values. But such a mass on the roof, even with a slight slope, cannot be held indefinitely. And, having reached a certain critical state, it slides down the slope, often - very sharply, like an avalanche, while often dragging the roofing material along with it.

Such a situation can end tragically for a person or animal that accidentally finds itself at that moment under the roof eaves or in close proximity to it. And even in the best case, if you do not consider everything in such gloomy colors, the descent of such a snow "avalanche" can cause significant damage to the economy - necessitate urgent repairs to the roofing or seriously damage courtyard buildings.

In order to minimize the likelihood of such situations, special snow-retaining systems various designs. These simple, in principle, devices are designed to reliably hold the accumulated large masses of snow on the roof, preventing them from falling sharply down. With the onset of warming, when the snow begins to actively melt, the melt water, along the relief, will gradually drain into the gutter and be discharged into the storm sewer.

In addition, in order to avoid the formation of icicles and ice between the cornice overhang and the gutter, some prudent owners also equip the edge of the roof, as well as the gutter itself. This system is activated in the winter, as needed. But about it - a special conversation that requires a separate publication.

Installation snow-retaining elements are carried out in certain areas of the roof - along the edge of the roof, on top of the roof windows, above the ventilation and chimney pipes. This is necessary so that ice and snow masses do not damage these structures when sliding down.

Prices for snow guards

snow retainers

Until recently, there were practically no snow containment systems installed on the roofs of Russian private houses. Therefore, the traditional occupation was to clean the roof manually several times during the winter with the help of shovels. It must be said that this task is not easy, and besides, the work of cleaning the roof is not safe.

Today the installation snow retainers provided by building standards and regulations. By the way, it is even interesting that in European countries with severe and snowy winters (Scandinavia), a house on the roof of which snow containment systems are not installed cannot be insured, since the building is considered unfinished and does not meet safety standards.

Elements of the snow mass containment system can be designed for different loads, which can vary from 80 to 300 kg per meter. Systems designed for a higher load may well be a good support used in combination with catwalks during preventive and repair operations. Thus they become component of the overall work safety system on the roof.

Varieties of roofing snow retention systems

Snow-retaining systems can be divided into two categories - according to the functions they perform and according to the design on which their appearance. It should be noted that the aesthetic snow retainers can even give accuracy and aesthetics to the roof. Therefore, choosing from the range of systems offered for sale, on design solution in which they are made, it is also quite possible to pay attention.

Functional purposes snow-retaining systems

Due to the fact that today manufacturers offer various options products designed to perform certain functions, it is necessary to indicate how they differ from each other. So, in specialized stores you can find the following systems:

• Structures that partially hold back snow masses. In the spring, the snow slides off the upper areas of the roof and rests against a kind of barrier, and then gradually melts, which allows the moisture to partially evaporate and partially go into the storm or drainage sewer. That is, drains are not loaded with large flows of water, and a layer of snow does not have the ability to fully fall from the roof.
• Barriers for complete retention of snow in certain areas of the roof, that is, they completely block the road to snow in a certain place. When it begins to melt, water passes under the installed barrier element or flows around it on both sides. This allows you to direct water flows in the required direction, securing certain areas of the roof, such as chimneys and ventilation pipes, skylights and other elements.

• The third option is systems that are capable of holding back only large masses of snow, since when they are installed, between their elements and the roof surface, big enough gaps. Such systems are necessary for roofs covered with bituminous soft tiles, which have a rough surface, due to which snow is well retained on it. In addition to bituminous coatings, such systems are also successfully used on roofs covered with metal tiles.

Which option to choose depends on several factors, which include average data on the thickness of the snow cover in winter in a particular region, the angle of the roof slope, the smoothness or roughness of the coating, as well as its relief. For example, if there is a lot of snow in winter, and the thickness of its layer on the roof can reach up to 500 ÷ 1000 mm, then it is necessary to install the last of listed variety systems, since small masses of snow and melt water must freely leave the roof.

In regions where the snow load is not so great, can be installed snow retainers, partially holding back snow, that is, the first option from those indicated.

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metal tile

Design and shape snow retainers

It is interesting that the system of retaining fallen snow masses on the roof is by no means new. People have long learned to counteract the possible uncontrolled descent of snow and ice from the roof slopes. For example, in some Nordic countries, as snow retainers logs of small diameter were used, which were tied to the ridge of the roof and lowered on ropes to the required slope level, closer to the cornice overhang.

Today, manufacturers have developed several types of systems that have different shapes and designs. Therefore, from them it is quite possible to choose the option that is most suitable for a certain relief.

It must be said that for some flat roofing materials, such as bituminous tiles or seam metal coating, almost any snow-retaining designs. But for metal tiles and some other roofing materials with a pronounced high relief, it is necessary to select a specific model of systems.

When choosing, it is necessary to take into account that snow-retaining elements must be fixed on the roof rigidly. This means that they must be placed in those places where the roofing has a reliable emphasis on the boards or bars of the crate, since the thin metal of the coating is not able to withstand heavy loads.

More one important point- all metal snow retainers must have a protective polymer coating. Otherwise, their century will be short-lived - in a couple of years they will simply be "eaten" by corrosion.

• lamellar snow retainers - this is an excellent choice for roofs covered with metal tiles, as they are light in weight, and the design is able to evenly distribute the snow load. Most often, such systems are used on roofs, the slope angle of which is no more than 30 degrees. lamellar snow-retaining elements are solid or perforated plates, which are fixed on the roof with the help of special brackets, screwed to the batten system with roofing screws.

• Corner snow retainers is the simplest and affordable option. They are a metal strip, bent in the form of a corner of a certain size. The upper edge of the element, turned towards the ridge, when it is fixed, is set at a right angle to the roof surface, which prevents the free flow of snow masses, reliably holding them on the roof.

Such systems are also often used on roofs covered with metal tiles. They do not have high strength and are not designed for high point load. Therefore, they cannot be, for example, a support for the master during the period of repair or maintenance work.

Corner snow retainers along the crests of the relief waves. The systems are fixed using the same roofing screws.

• Lattice or mesh snow retainers are a regular lattice. It can be made from a whole metal sheet, in which holes of various configurations are cut, or welded from a metal strip, round or profile pipes. The design is also not particularly complex, so such snow retainers quite popular. In addition, they look very good on the roofs of modern private houses.

For fixing lattice snow-retaining systems use special supports that are installed in the area of ​​​​the cornice overhang of the roof. But often this snow-retaining the barrier rises higher - one or two lines of the relief of the metal tile. The grate perfectly cuts large masses of snow as they slide along the roof slope, and delays the ice until it melts.

Lattices, when installed on the roof, can form a gap of different heights between their bottom bar and the roofing. Therefore, when purchasing systems of this type, it is necessary to clarify this parameter.

• Spot corner snow retainers - these are single elements that are installed on the roof in several rows, usually in a checkerboard pattern. Unlike others snow-retaining systems, point elements, as a rule, are installed during the installation of the roof. They are fixed on the crate truss system, fixing the waves of the roofing material in the recess after it is fixed.

By the way, such simple devices are very effective. With their proper placement, the snow on the roof is distributed evenly. Another thing is that with too much sediment, they may not fully cope with their task.

In addition, such point barriers have installation features - their elongated brackets are wound under piece roofing material. So for a metal tile, a similar option is hardly possible.

• Snow guards- "horseshoes" . Not so long ago, systems appeared in specialized stores, which can also be classified as point systems. They are called "horseshoes" because of their characteristic shape. These metal parts are made specifically for certain profiles of metal tiles, that is, they fit such a roofing as well as possible.

Snow guards- "horseshoes" have a curved shape, thought out for a specific profile size. And on the sides they are provided with mounting platforms with holes for fixing them on the roof to the batten guides.

• Tubular snow-retaining systems are also very popular. They are installed on different roof coverings. The design is simple and straightforward, so mounting the system is usually not particularly difficult.

These snow retainers consist of brackets and metal pipes, usually having a diameter of 15 to 30 mm. The brackets are fixed on the plane of the ramp with regular roofing screws with a certain pitch, along the line of fixing the sheets to the crate.

Pipes in this design of protective systems can be from two to four. They work on the same principle as lattice ones, that is, they cut layers of snow sliding down the slope, preventing them from falling down with their whole mass. Sometimes tubular snow retainers installed in several rows - this is necessary if the roof has large enough area, and the house is located in a region with very snowy winters. This will be discussed below.

All varieties snow-retaining systems are produced in various color design external protective polymer coating. Therefore, they can be matched to any color of the roofing material (according to the RAL scale).

Calculations required for selection snow-retaining systems

The choice of the type of construction will also depend on the strength of the roof truss system. It is clear that if you install completely snow-retaining elements, then the roof should calmly withstand the load from sediments gathering on it. But this is always provided for even when designing the roof - the necessary operating margin is laid in the strength of the elements of the truss system.

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ceramic tiles

The roof must withstand if it is designed according to all the rules. But the load application vector caused by the masses of snow is decomposed into two components - perpendicular to the slopes and along them, along the line of the slopes. And this longitudinal load can be quite considerable, capable of cutting or turning fasteners. snow-retaining elements.

This is all said so that before you opt for a particular option snow retainers, make preliminary calculations and draw up a project for the installation of these elements on the roof slopes, taking into account various points. On how correctly they will be fixed snow-retaining devices, their functionality, safety and duration of operation depend. Many factors are taken into account:

• Roof pitch . This parameter directly affects the magnitude of the force vector directed along the slope. So, if the slope angle exceeds 15 degrees, then on snow retainers there will be a very high load. And it, up to a certain limit, is growing rapidly with increasing slope! Therefore, in this case, it is recommended to use tubular or lattice systems.

Not sure exactly at what angle the roof slopes are located?

This is easy to calculate mathematically using well-known trigonometric formulas. Probably everyone can measure the linear dimensions of the roof, and then the resulting values ​​\u200b\u200bare simply substituted into a special one.

• Roofing features , in this case, metal tiles. For all types of metal tiles, except for Monterrey, universal fasteners are suitable snow retainers. For Monterrey, due to the characteristics of the profile, special ones are produced that allow you to do without additional reinforcement of the crate, which cannot be avoided when installing universal systems on it.
• Climatic conditions of the region - This refers to the average level of snow cover thickness, typical for the region of residence. This will be discussed below.
• Number of rows snow-retaining elements is determined on the basis of the calculations, to which we now turn.

counting snow-retaining system, it is very important to achieve a uniform load on the metal tile, as well as on the design of the truss system. It is important to remember that the brackets must not be fixed directly to the roof eaves. They must be on a rigid base, otherwise the overhangs may not withstand the snow load.

So how do you calculate.

It should be correctly understood that the brackets with fasteners are the most vulnerable element of the snow retention system. It is clear that the probability that the snow will break the pipe or grate with its mass is not very high - rather, it will twist the mount or bend the bracket.

Each bracket produced for such systems has its own strength indicators. So, for example, the standard holder No. 76b for a two-pipe snow retainer capable of withstanding a load of 300 kg. But a more “lighter” mounting option, bracket No. 62, is designed for a maximum load of only 110 kg. This means that this must be taken into account when choosing a system and when planning its installation on the roof. It is likely that one set of barriers will not be able to hold the amount of snow that is typical for your region. So you have to install snow retainers in two (and sometimes more) rows, evenly distributing them along the length of the slope.

To do this, you can use the following formula:

M=i ×L ×Ns ×sinα,

M is the load caused by the mass of snow drifts along the edge of the rabbit slope, directed along the roofing.

i- coefficient taking into account the force of friction on the roofing. For it will not be a big mistake to take this coefficient as 0.8.

L- the length of the slope from the ridge to the installation line snow retainers

Ns- the value of the snow load, established by long-term meteorological observations for a particular region.

sinα - the sine of the slope angle of the roof slope (α) - is necessary for the correct calculation of the force application vector along the slope.

Where to get the value Ns? It can be checked with the local meteorological service. Or use a table or map of the zoning of the territory of Russia according to the level of snow load. An example of such a map is shown below:

To make it easier for the reader to make an independent calculation, below is a calculator that will perform calculations in just a few seconds.

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