How to fasten a roof ridge to corrugated board - the nuances of fastening. Mounting a ridge for corrugated roofing

Metal corrugated board is a sought-after material for roofing, which differs affordable price, ease of installation and high wear resistance. Such a wide popularity of this material today is due to the fact that corrugated board does not require additional processing, has a small mass and is easy to cut. Do-it-yourself installation of corrugated roofing does not require special building skills or expensive tools.

In general, do-it-yourself corrugated roofing is done quite quickly. This material is supplied in the form of profiled steel sheets with zinc galvanic and polymer coating. If the protective layer is violated (deep scratches, open cut lines), the future roof will be subject to corrosion and premature wear. That is why, when installing the roof, you should be careful, work in shoes with soft soles and do not leave cut lines open for natural precipitation.

The corrugated board for the roof is attached to a wooden crate. For this, well-dried boards treated with antiseptic compounds are used. You can also use steel girders. At the same time, the height of the corrugation of the sheet should be at least 4 cm. If the roof slope is small, it is advisable to buy corrugated board, the length of which exceeds the dimensions of the slope. In this case, the transverse joints of the sheets will be excluded, and the moisture resistance of the roof will increase.

Rice. 1 - Installation of corrugated board with an overlap

Ng - the size of the horizontal overlap;
Ks - the size of the cornice overhang.

When the length of the roof slope exceeds maximum dimensions corrugated sheet, the material must be mounted from the bottom corner in a horizontal direction. Thus, the top sheet will overlap the bottom sheet, eliminating leakage during rain. The size of the horizontal overlap is selected taking into account the angle of inclination of the slope (see table 1).

In the case when the roof slope has an atypical shape (triangular, trapezoidal), it is advisable to calculate the layout of sheets and cutting on paper before installation. The dimensions of the sheet overhang are calculated depending on the type of profile (see table 2). If the house will be installed drainage system, the overhang should be about 4 - 5 cm.

How to fix corrugated board: selection of hardware, installation technology.

When installing corrugated board with your own hands, it is initially necessary to align the first sheet along the end, leaving the calculated cornice overhang. The corrugated board is fastened with self-tapping screws with a sealing washer installed at the ridge. The next sheet is overlapped and aligned horizontally with the first. Further, the roofing sheets are fastened together with self-tapping screws with sealing pads. After fastening several sheets, the corrugated board is aligned along the cornice line, attached to the crate, after which the next horizontal row is mounted.

The corrugated board is attached to the crate at the bottom of the corrugation, as shown in Figure 2, and the ridge is fixed through the upper ridge. The length of the screw (L) varies depending on the height of the ridge of the material and is calculated using the following formula:

L = H + L1 + L2,

where L is the length of the hardware (self-tapping screw), mm;
L1 - the length of the part of the profile that cuts into the crate (approximately 25 - 30 mm), mm;
H – sheet profile height, mm;
L2 is the total thickness of the washer and seal (about 4 mm), mm.

Rice. 2 - Installation of corrugated board on the crate.

When installing several sheets of corrugated roofing, it is recommended to treat the overlaps with silicone or thiocon sealants to prevent roof leaks. The use of welding or gas cutting to work with corrugated board is prohibited. It is also not recommended to use nails for fastening, because. with gusts of wind, a sheet of corrugated board can come off. Fastening one square of corrugated board usually requires 5 - 7 fasteners (self-tapping screws).

Waterproofing and vapor barrier of corrugated roofing.

To ensure the necessary tightness, do-it-yourself installation of a roof from corrugated board provides for waterproofing work. To do this, a vapor barrier film is laid in horizontal rows from the bottom of the eaves towards the ridge. In general, corrugated roof waterproofing avoids the following problems: condensation, premature wear of the crate, leaks, freezing and mold.

Rice. 3 - Roof waterproofing from corrugated board.

When laying the vapor barrier film in several rows, allowance for sagging (about 20 mm) and sheet overlap (100 - 150 mm) must be taken into account. To ensure a tight connection of the rows, the joints are glued with a special mounting tape.

Rice. 4 - Installation of waterproofing under the crate.

rafter leg;
vapor-permeable film for waterproofing;
counterlattice;
crate.

In non-residential buildings for roof waterproofing, roofing felt, glassine or roofing material can be used. When installing corrugated roofing, there must be ventilation gaps between the crate or ridge and the waterproofing material, as well as between the seal and the ridge (see Fig. 4). For residential buildings, insulated corrugated roofing is used.

Rice. 5 - Scheme of the insulated roof.

crate;
corrugated board;
sealant;
roofing ridge;
waterproofing material;
rafter plank;
rafter leg;
insulation layer;
vapor barrier material;
ceiling rail;
finishing material (lining, drywall);
a - a gap for under-roof ventilation;
b - the gap between the waterproofing and the seal for ventilation.

Installation of the crate and installation of corrugated board.

After laying the waterproofing, the rafters and battens are fixed. The step of the lathing and the type of corrugated board is selected taking into account the angle of inclination of the roof. The necessary data for the installation of corrugated board with your own hands, see the table below. 3.
To protect the roof from drafts and wind between the pediment and the edge of the roof, it is necessary to install wind strips. The strips are fixed with self-tapping screws with an interval of 200 - 300 mm. The overlap of the plank on the pediment is 100 - 150 mm.

Rice. 6 - Installation of a wind strip to protect the roof from corrugated board.

wind bar;
self-tapping screws with galvanized anti-corrosion coating.

To seal the joints between the slope and the wall, corner strips. They are fastened with self-tapping screws with an interval of 200 - 300 mm. The minimum overlap of the plank on the roofing must be 200 mm, while the overlap on the wall must be 150 mm. The scheme of fastening the corner and transverse slope to the wall is shown in Figures 7 and 8.

Rice. 7 - Fastening the corner slope to the wall.

Rice. 8 - Fastening the transverse slope to the wall.

Installation of a ridge on a corrugated roof.

In general, do-it-yourself roofing from corrugated board is quite easy to install. The final step after installing the battens, laying waterproofing and roofing is the installation of the ridge. The roof ridge performs both aesthetic and protective functions, closing the gap at the junction of roofing materials in the upper part of the roof. For corrugated roofing, you can choose a simple, figured or tiled ridge. It must be installed from the leeward side, i.e. from the side of the roof, where there are smaller gusts of wind.

Installation of a ridge for roofing from corrugated board is carried out on the upper edge of the roof in the upper crest of the profiled sheet. For this, galvanized self-tapping screws are used, the interval between which is about 200 - 300 mm. If several tile skates are used, then the overlap of one on the other should be 150 - 200 mm.

Rice. 9 - Installation of the ridge on the roof of corrugated board.

To increase the waterproofing performance of the roof and ensure the tightness of the joints, a sealing gasket must be placed between the ridge element and the roofing material. At the same time, a small ventilation gap should remain between the ridge and the seal. The end parts of the ridge must also be closed with plugs (see Fig. 10).

Rice. 10 - Ridge for corrugated roofing.

The skate is one of the elements roof frame roofs. It is necessary in order to prevent water from entering the space under the roof, to provide roof ventilation and to give the structure a decorative effect. In the article below, we will look at how to properly install a roof ridge and what consumables will be needed for this.

Roof ridge device

The ridge is the junction of opposite roof slopes. There are several types of skates based on the design of the roof. It can be a long, strong beam, mounted on vertical supports or laid on gables. Further, the rafters in the upper part will rest on such a beam.

The truss frame can also consist of separate triangular trusses formed by interconnected pairs of rafters. Such farms are assembled together using horizontal jumpers. At the very top of the inclined plane of the trusses, a board is sewn on each side. It is these boards, placed parallel to the eaves, that are the ridge.

If we are talking about a ventilated ridge for corrugated board, then we mean a special roofing element that closes the gap between the sheets of material laid on the roof slopes. As a rule, such parts are made of metal or a material similar to roofing.

Before you fix the ridge on the corrugated roof, you should decide which shape will be optimal for a particular design:

Purpose

First of all, it is worth saying that the ridge on the roof is necessary not only to give it completeness and aesthetic beauty, but also to ensure the functionality of the entire roof structure.

Currently, the roofing pie includes several layers at once, including vapor barrier, heat and waterproofing. In addition, such a multi-layer design requires the presence of gaps for ventilation. In particular, the indentation between the roofing and the insulation makes it possible to reduce heat losses, regulate temperature regime inside the house and ensure durability insulating material. Therefore, in winter time an ice crust does not form on the roof, and in the summer - the attic floor does not heat up to the temperature of the steam room.

Therefore, before putting the skate on the roof, in roofing cake it is necessary to provide a ventilation gap and take care of the circulation of air flows. To achieve this, the overhangs on the eaves are hemmed with a soffit, board, fixed with gaps, or other materials in combination with ventilation grilles. Please note that the fastening of the ridge to the corrugated board must be done in such a way that it freely falls under it. Fresh air. In this case, moist air from the inside will freely leave the under-roof space, without settling in the form of condensate on the insulation and wooden structures.

Calculate the height

It is necessary to perform calculations at what height the ridge should be located at the stage of project development. This is especially true in the case of the construction of a hip or other roof with a complex configuration.

The calculation of the installation height of the ridge is made taking into account the following conditions:

the configuration and appearance of the building;
type of roofing;
the level of snow and wind loads in the region;
reasonableness in terms of economy and installation complexity.

The roof structure must be proportionate to the building itself. If it is planned to install a high roof with steep slopes, it will require significantly more material. At the same time, a low-slope roof must be designed for a large amount of snowfall.

Determining how to mount a ridge on a complex roof requires special software or the help of architects who can accurately calculate its height. If we are talking about a simple design with a slope of slopes in the range of 35-60º, the height of the ridge can be calculated using trigonometric formulas.

The subtleties of installation and fastening to corrugated board

Although the ridge run can be made of steel, still the owners of private houses mainly use wooden beam. However, before attaching the skate to corrugated wood, it must be treated with flame retardants and antiseptics.

To minimize the harmful effects of precipitation allows the laying of special elements of roofing material or galvanized sheet, and from the inside, the joints are waterproofed and the gaps for ventilation are arranged.

Previously, in the upper part of the inclined slopes, it is necessary to fill a wide crate, since it will be necessary to attach the skate to the profiled sheet with special fasteners. However, the distance from the edge of the roofing to the top of the slope should be approximately 7 cm. Wider gaps will require special ridge elements with wide blades.

Waterproofing and insulation of the roof, which will prevent condensation, are also performed before the ridge is made from corrugated board. However, an indentation for air circulation must be provided.

How to fix a ventilated ridge on a profiled sheet

Ventilation of the ridge element of the roof allows free air circulation in the roofing pie.

The technique of how to properly attach a skate to a profiled sheet involves the following manipulations:

On top of the previously installed rafter frame perpendicular to the rafters, it is necessary to lay and fix a layer of waterproofing. The overlap of individual sheets should be at least 15 cm, and the seams should be sealed with construction tape.
A batten rail and counter-battens are nailed to the rafter legs.
Next, the roofing is installed, which does not reach the ridge a little.
Inside the ridge run, a hole is made for ventilation, which will ensure free air circulation inside the roof. waterproofing material placed under it with an overlap.
When filing overhangs on the cornices, it is also necessary to leave to retreat for ventilation.

To make the corrugated roof ridge as functional as possible, special ventilation boxes are mounted. They are mounted on self-adhesive mixtures or special fasteners. Please note that it is best to work in warm, dry weather.

Alternatively, if the ventilation duct cannot be installed, several end windows are equipped inside the attic for ventilation.

Mounting a skate - how to do it right

The type of material for covering the roof will be chosen depends on the way how to connect the ridge on the roof. Usually such additional elements are offered in addition to the main roofing, so the method of their fastening will be similar to the laid material.

The general rule for mounting a roof ridge is that end pieces from both gables are placed first. Then a cord is pulled between them as a guide. Further, strictly observing the horizontal lines, lay all the remaining parts. Please note that the installation of ridge trims must be carried out so that liquid does not flow into the seams and the wind does not blow.

It is very important to perform high-quality sealing of the ridge bar, for which you can use:

mounting foam;
special sealant;
cement mortar in the case of a slate coating;
compositions provided by manufacturers of roofing materials.

As a rule, special asbestos-cement ridge strips are sold for slate roofs. They are mounted on both sides of the ridge with an overlap of the upper edges and fixed with special nails.

Metal ridge rails can be made independently from galvanized steel or you can purchase ready-made factory-made products. To install such elements, self-tapping screws with sealing rings made of rubber or neoprene are used.

For ceramic tiles, special ridge elements are provided. When using roll media or soft bituminous roofing, the skate is insulated with a similar coating.

It is worth noting that you can make the ridge run more decorative with the help of special decorations that are commercially available in hardware stores.

How to fix the ridge to the roof

How to fix a ridge on a profiled sheet using a roof as an example

A ridge is a horizontal rib, which is located at the very top of the roof and is attached to the corrugated board. This element is formed by the joints of the roof slopes. The ridge system also includes other elements that are attached to the rib. It is in this place that the roof is ventilated, and the space under it is also ventilated. When installing the ridge on the corrugated board, a ridge run is also created - with its help, the slopes are connected truss system.

As you may have guessed, skates are elements of only those roofs that have two slopes. In roofs of irregular shape, the ridge is also used, only in this case it will be displaced.

When mounting a skate, it is especially important to consider the following two points:

Accurately calculate device height
ensure ventilation of the roofing pie from the corrugated board and the attic of the room.

Until recently, asbestos cement was used to decorate the ridge. Today, more and more preference is given to structures made of galvanized iron. You can buy them ready-made, or you can make your own corner.

Types of skates

The ridge on the corrugated board can be performed in several ways. So, sometimes it is bars that serve as supports for rafter legs. Vertical racks are supported in this case on beams along the ceiling or puffs.

In another version, the ridge on the corrugated board is connected by longitudinal ties along the triangle of the truss system. This option involves sewing boards on each side of the rafters. What should be used special angles. This will allow you to form a skate.

Roofing materials act as the basis of the device. So, it can be metal profile, ceramic or bituminous. Various types of skates. So they can be represented by ridge slats, semicircular structures, they are mortise and crossed.

The ridge bar connects the docking sections. The ridge for corrugated board is also an element of decor. You can easily find elements that are ideal for you in terms of color, organically fit into the concept of the building. When installing corrugated board, be sure to install a special seal under the ridge.

The functions of a semicircular fastening for corrugated board are no different from the functions of ridge slats. However, such a device looks much more beautiful. Many manufacturers make skates in different colors and textures. At the same time, it is better to use roofing elements from one manufacturer, in which case the installation of the ridge on the profiled sheet will be of high quality.

A mortise ridge on a corrugated roof is used for hip roofs. Such parts crash into roof slopes. Horizontal levels always below basic. Crossed skates can also be used for these types of profiled sheet roofs.

Important Points

The device of the skate involves the observance of some very important points.

Do not make the ridge connection tight. This condition is necessary so that air can circulate in the under-roof space.
Mounting the element on a profiled sheet is always the final step. Before proceeding with the installation, it is necessary to lay ventilation material, a protective bar from moisture. As protection, a special seal for the ridge can be used.

After you decide on the material of the future roof, take care of that. So that you have at hand all the necessary components (except for roofing, ridge and fasteners). So, you will definitely need a ridge ventilation bar, a ventilation tape, a lightning rod holder, hermetic material, a ridge seal. Without these materials, you simply cannot build a solid installation and fix the ridge on the roof.

Installation of the skate on the corrugated board

Determine the ridge height

Before you start working with a ridge structure, determine the height of the element for the corrugated board. It is from this indicator that we will build on the calculation of materials. To calculate, you should have knowledge in the field of geometry. Determine the angles of the roof slope. Exists special table, you can use it for your convenience. The most important thing is to know the width of the building and the magnitude of the angular slope.

Let's take an example. Let's say our building has a width of 8 meters, and the required inclined angle is 40 degrees. To calculate the desired height of the structure, multiply the width of the building by a factor (0.839 times 4). So the required height will be 3.35.

Installation of ridge elements

After the installation of the roof is completed, you can proceed with the installation of the ridge element. However, before proceeding to the skate, check the evenness of the entire structure and its parts. Before fixing the ridge elements, install a special beam, the cross section of which should be at least 7x9 centimeters. Two crate bars are attached to the installed element.

The ridge beam is always attached to the central one. It is important that its upper edges are rounded, this makes it easier to work.

If you cover it with roofing material before starting to install the ridge beam on the corrugated board, this will protect the ceiling from fungus, mold or decay, so there will be no flaws on the ridge for a long time and it will last for many years.

The installation of the ridge and its parts is carried out to the ridge beam with screws. To build ridge floors, two skates should be laid on adjacent slopes. The main skate is a little longer (about a centimeter), after strengthening it, proceed to install the remaining skates. At the same time, their extended ends should be directed towards the front.

Skate mount

So everything preparatory work finished. Now we will learn how to attach the skate to the profiled sheet. First we pull the string. Of course, it is better to share this stage of work with an assistant - it will be much easier for you than for yourself. The lace must be level. For convenience, you can temporarily attach it to opposite corners of the roof with self-tapping screws. If necessary, you can always lift it up.

In order for the work to be done efficiently, do not screw the screws into the corrugated board immediately. Just get all the elements. Fasten the following with an overlap of 10-20 cm. Again, we check everything by cord and level, after which it tightens other fasteners to the corrugated board.

If your roof has a semicircular appearance, install end caps on the ridge at the ends of the element.

The ridge element on the corrugated board should be fixed very high quality, because the durability and strength of your roof, its dryness depends on it. And this, in turn, will provide a comfortable and warm environment for your home.

Ridge for corrugated board: types, installation and device

Why do you need a skate for corrugated board. Construction types. How is the installation of the ridge on the roof, whether it should be sealed. Basic tips for installation and design.

How to install the skate on the corrugated board?

Imagine what will happen if you do not attach a skate to the corrugated board. Snow, rain, all natural precipitation will fall under the top layer of the roof, destroying its device. A gusty wind, flying into the gap between the corrugated board and the waterproofing film, singing a song, will try to tear off the roof. It is unlikely that a sane person wants to have a roof without a ridge element.

The installation of the ridge is necessary and is carried out with an overlap of 15-20 cm, while laying starts from the leeward side of the roof.

Necessary materials

The roof ridge is an additional element designed to connect the roof slopes and protect it from precipitation and strong gusty winds. It also has an aesthetic value, gives the roof a finished look. Its fastening takes place on top of corrugated sheets.

Nowadays, in the market of roofing materials, there are many manufacturers offering different kinds additional elements for roofs, the device of which includes corrugated board and additional elements, without which the installation of the ridge is impossible. But still, three main types stand out from the entire range:

A simple ridge is a metal corner with a shelf width of 100 to 300 mm ( standard sizes). It is desirable that they be equipped with a rim - metal bends along the edges by 15 mm. This gives the skate the necessary rigidity. Using a rigid element, the final assembly is more accurate and faster. Installation becomes easier as gusts of wind do not bend it.

Types of ridge for the roof.

The device of a ridge with a U-shaped rib differs from a simple one in appearance. It has the same dimensions of the shelves, but its edge is made in the form of the letter P. The size of the edge is usually 20 by 40 mm or 20 by 30 mm. Many manufacturers have the ability to manufacture an element according to individual sizes. Such a device makes its installation more convenient. The U-shaped rib is screwed with self-tapping screws to the ridge beam. The timber is fastened in advance, the roof is installed and the corrugated board is laid.

The semicircular ridge has various diameters ribs, but an obligatory component of this type is a plug, or in other words, a ridge end element.

In the manufacture of a ridge for corrugated board, a material such as profiled sheet is used, or it is made from galvanized steel. The standard length is 2m.

Another essential element that makes up the roofing device is a ridge seal. It is designed to seal the gap separating the ridge sheet and, in our case, corrugated board.

In my own way appearance seals are divided into three categories: for corrugated board, for metal tiles and self-adhesive universal seals. The first two types repeat the pattern of roofing iron.

Each type of corrugated board has its own sealant and its own installation. The universal tape in the cut has the form of a rectangle or square. Also, some manufacturers offer ridge ventilation tape. It often happens in the form of a semicircle.

The seal is made of foamed LDPE or polyurethane foam and does not interfere with air circulation.

To fasten the ridge to the corrugated board, special roofing screws are used, painted in the color of the roof, with a silicone gasket. Since this additional element is always under open sky, the use of a gasket is a mandatory item. It is not only an obstacle for water, trying to penetrate under the roof through microscopic cracks near the screw head, but also makes it possible to tighten the protection and corrugated board more strongly. The length of roofing hardware - from 80 mm.

Necessary tools and equipment

Tools for working with corrugated board.

Directly during the installation of the skate, you will need tools and equipment:

a ladder with triangular protrusions at the upper ends, due to which it is attached to the roof;
roulette;
level;
screwdriver with a head for roofing screws;
metal scissors;
lace.

Stages of work

Work begins with checking the finished roof. The upper parts of the slopes should be even, lie on one horizontal straight line. Differences of 2 cm are allowed.

From one pediment to another, it is necessary to stretch the lace. It is advisable that you have an assistant. Without it, it will be quite difficult to cope with this type of roofing work. The lace is leveled with a level and temporarily fastened with self-tapping screws at opposite corners of the roof. If necessary, it can later be raised higher.

On the edge of the corrugated board, a strip of sealant or ridge ventilation tape is fastened, corresponding to your type of sheets.

The first element is laid on the opposite side from the winds and rains. It is screwed with roofing screws at a distance of 200-300 mm (depending on the pattern of the corrugated board) through the upper corrugation to the bars pre-attached under the corrugated board, running parallel to the axis of the ridge.

To perform the highest quality installation of such material as corrugated board, you do not need to screw in all the screws at once. It is advisable to bait elements for 2-4 hardware each. The subsequent fastening occurs with an overlap of 100-200 mm. After that, you need to check again on the cord and with the help of a level, and only then tighten the rest of the fasteners. Extra holes in your roof are useless.

If your roof device has a semicircular appearance, then in order to complete the installation, it is necessary to fasten the plugs from the ends of the ridge element.

Fastening corrugated board to the roof must be done with high quality. A properly installed ridge guarantees the dryness and durability of the roof, and as a result, a warm and comfortable atmosphere in your home.

Installing a skate on a corrugated board: installation, elements

Installation of the ridge on the corrugated board is carried out in stages and using additional roofing materials.

Ridge for corrugated roofing

What is a skate
The use of ridge seals on corrugated board
Equipment and tools
Skate device: stages of work

Any roof will require a ridge element to be strengthened during installation. If this is neglected, all natural precipitation such as rain and snow will fall under the top layer of the roof, gradually destroying it from the inside. Wind entering the space between the waterproofing material can seriously damage the roof.

Scheme of a roof from a professional flooring.

What is a skate

The ridge is an additional element that is designed to connect the roof slopes, and also protects it from the effects of precipitation and strong gusty winds. In addition, the ridge also has an aesthetic value: with its help, the roof takes on a finished look.

The ridge is installed by reinforcing it over corrugated sheets.

In today's roofing market, there are many different options additional elements for roofing. Three main types of skates can be distinguished from the assortment, which are used for corrugated roofing:

simple;
semicircular;
with U-shaped rib.

A simple skate is an ordinary metal corner with a shelf width of 10 to 30 cm (these dimensions are considered standard). It is desirable to supply with edging, that is, bending the edges of the metal by 15 mm. Thanks to this, the skate is given the necessary rigidity. With a rigid element, the installation is completed more accurately and quickly. Installation of the skate is much easier, gusts of wind will not interfere and will not bend it.
If a ridge with a U-shaped rib is being mounted, it must be borne in mind that it differs from a simple one. First of all, in appearance: the dimensions of the shelves are the same, but the rib is made in the form of the letter P. Usually the rib size is 20X40 mm or 20X30 mm. Most manufacturers have the ability to produce elements according to specified dimensions. With such a device, mounting the skate is more convenient. Before the actual installation of the ridge is carried out, the beam is fastened, then the roof is installed, and the corrugated board is laid. The U-shaped rib is screwed to the ridge beam using self-tapping screws.
A semicircular skate may have different diameters ribs, but a cap, or ridge end piece, is a required component.

The use of ridge seals on corrugated board

Scheme of installation of the crate.

For the manufacture of a roof ridge, a profiled sheet or galvanized steel is used. Its standard length is two meters.

Another of the mandatory elements that are included in the roofing device is a ridge seal. It is used to seal the gap that separates the ridge sheet and corrugated board.

Seals can be for metal tiles, for corrugated board, universal self-adhesive. Of these types, the first two have the same pattern as roofing iron.

For all types of profiled sheet there is a certain installation method and its own sealant. In the cut, the universal tape has the form of a square or rectangle. Some of the manufacturers offer ridge ventilation tape. Most often it happens in the form of a semicircle.

The material for the manufacture of the seal is foamed PVD or polyurethane foam, so there are no obstacles for air circulation.

To mount the ridge to the corrugated board, special self-tapping screws for the roof are used. You can choose those that are painted in the same color as the roof, with a silicone gasket. This additional element is always in the open air, so the gasket must be used. This is a barrier to water, which will penetrate through the microscopic cracks at the head of the self-tapping screw under the roof, but thanks to it, the corrugated board and protection can be pulled tighter. For roofing hardware, the length is from 80 mm.

Equipment and tools

To mount the skate, you will need the following equipment:

roulette;
level;
a ladder with triangular protrusions at the upper ends, due to which it is attached to the roof;
screwdriver with a head for roofing screws;
lace;
metal scissors.

Skate device: stages of work

Scheme of the device of a sheet of corrugated board.

It is necessary to start work with a thorough check of the finished roof. For slopes, the upper parts should be even, located on the same horizontal line. Differences of approximately 2 cm are allowed.

The lace must be pulled from one pediment to the other. It is better to perform this kind of operation with an assistant. It is quite difficult to cope with this type of work alone. It is necessary to align this lace with the help of a level, it can be temporarily strengthened at opposite corners of the roof with self-tapping screws. If necessary, it can be raised higher.

A ridge ventilation tape or a strip of sealant is fastened to the edge of the corrugated board - in accordance with the type of sheet.

The first of the elements should be laid on the opposite side from the rains and winds. It is screwed with roofing screws every 20-30 cm, depending on the pattern of the corrugated board, through the upper corrugation to the bars, pre-attached under the corrugated board, which run parallel to the axis of the ridge.

For quality performance installation of such building materials as corrugated board, all self-tapping screws should not be screwed in immediately. It is better to make elements of 2-4 hardware for each. The subsequent ones are fastened with an overlap of 10-20 cm. After that, everything should be checked again using a cord and using a level, then tighten the other fasteners. Do not make extra holes in the roof.

If the roof has a semicircular device, to complete the installation of the ridge, you need to fix the plugs from the ends of the element.

The fastening of the ridge element must be carried out as efficiently as possible. The ridge, installed correctly, guarantees the durability and dryness of the roof, and this contributes to the creation of a comfortable and warm environment in the home.

Installation of the ridge on the corrugated board is carried out with an assistant

The installation of the ridge on the corrugated board must be carried out with an assistant. With it, it will be much easier to perform high-quality installation. And also it is necessary to prepare tools for work.

A roof ridge is a horizontally located rib at the highest point of the roof. The corrugated roof ridge is mounted only on a gable roof and is attached directly to the corrugated sheet. For the manufacture of a ridge from a profiled sheet, the same galvanized (or polymer-coated) steel is used as for the corrugated board itself, so the ridge organically fits into the overall appearance of the roof. Despite the modest and inconspicuous appearance, the ridge plays an important role in ensuring the reliability of the roof, because its main function is to protect the under-roof space from moisture penetration.

The absence of a ridge in the design of a gable roof greatly reduces its service life and thermal insulation qualities. Even in the case of using steel with a polymer coating, the unprotected edges of the corrugated sheets can be subjected to corrosion, and, in addition, a large amount of moisture will lead to damage to the battens and roof rafters. Therefore, having started the installation of corrugated roofing, in no case should this process be delayed: ideally, no more than a few days should pass between the fastening of the cornice strip and the start of the installation of the sheets until the completion of the roofing work - the installation of the ridge.

In addition to protecting the roof structure and the under-roof space from moisture penetration from the outside, the ridge also plays another important role - it creates conditions for roof ventilation, which is especially important in the case of an insulated roof.

Calculation of the length and height of the ridge

When calculating the height of the roof ridge from corrugated board, it is necessary to build on the so-called “roof slope” - the angle formed by the rafter base, parallel to the ground surface, and the rafter leg that connects the rafter base and the ridge.

In most cases, the roof slope varies from 5 to 60 degrees. Based on the magnitude of the slope, the height of the ridge can be determined arithmetically by multiplying half the width of the house by one of the constants presented in the following table:

Roof slope, degrees	Constant for calculating the height of the skate

For example, if the size of the pediment of the house is 11 meters, and the roof slope from corrugated board is 45 degrees, then the height of the ridge will be 11/2 * 1 = 5.5 meters. As for the length of the ridge, if the gables of the house are strictly vertical and continue right up to the ridge itself, then its length will correspond to the length of the side of the house with added outlets for two overhangs (this value usually ranges from 0.6 m).

For a corrugated roof, buying a ridge is absolutely no problem: the standard dimensions of such a galvanized additional element are usually about 2 meters, and the width of the shelves is 25-30 cm.

By the way, ridge and other additional elements from galvanized sheet can be made independently. Do you want to know how? Then watch the following video:

Fastener selection

Fastening of a metal ridge is carried out using self-tapping screws equipped with a rubber or neoprene seal. Since the ridge is attached to the sheets of corrugated board through the upper “waves”, the length of the screws must correspond to the height of the “waves” of the corrugation.

It should be borne in mind that if the estimated length of the roof ridge exceeds the length of one unit of the additional element, when laying the ridge elements with an overlap, it will be necessary to provide an overlap of less than 10 cm (preferably even 15-20), and it is better to start laying the ridge from the side opposite to those prevailing in this area winds.

The calculation of the number of screws for fastening the ridge to the corrugated board is carried out based on the rule that the fastening of the screws is carried out after 200-300 mm of the length of the ridge.

Required Tools

In the process of installing the ridge on a corrugated roof, you will need the following tools and fixtures:

Ladder with triangular ledges for fastening to the roof
Roulette
Building level
Metal shears
Screwdriver with head for roofing screws
Marking lace

Mounting the skate: step by step instructions

Step 0 Preliminary check of the finished roof, upper slopes which should be flat and lie in the same plane parallel to the ground (the deviation from the horizontal should be no more than 2 cm).

Step 1. Stretching the marking cord between the gables, aligning the cord with a level and fastening it from opposite corners of the roof with self-tapping screws. This stage of work is preferably carried out with an assistant.

Step 2 Laying a sealing strip or ridge ventilation tape over the corrugated board. This stage is necessary for reliable ventilation between the roof and the underlying layers of the roof, because in the absence of air exchange, moisture will accumulate in the roofing pie, which has a destructive effect on the wooden crate and the roofing material itself.

Step 3 Installation of the first ridge element, which is laid from the side opposite to the prevailing winds and rains in the region. Depending on the pattern of the roofing profiled sheet, the additional elements are screwed at a distance of 200-300 mm through the upper corrugation of the corrugated board to the bars parallel to the axis of the ridge.

Step 4 Installation of other ridge elements with an overlap of 100-200 mm. It is important that when fastening the ridge, it is necessary to constantly check the horizontalness of its axis (with the help of laces and by level), therefore, initially each element is fastened with only 2-4 self-tapping screws, and when there is complete confidence in the even location of the ridge, the remaining self-tapping screws are finished.

For details on installing a ridge and other additional elements on a corrugated roof, see this video:

The skate is an indispensable attribute of any pitched roof. This is the name of the joint of any two horizontal or inclined edges of the planes of the pitched roof. The correct execution of this element has a very great importance for the reliability of the entire roof.

The tightness of the roof slopes is ensured by a tight fit of the sheets of corrugated board to each other. To do this, when laying sheets of corrugated board at vertical and horizontal joints, an overlap is performed. Often, for greater tightness, special capillary grooves are made along the vertical edges of the sheet. At the same time, horizontal joints of profiled sheets with small roof slopes are sealed with a special roofing sealant.

If it is quite simple to prevent moisture from entering the under-roof space on the plane of the slopes, then only a special ridge element for corrugated board can protect the roof from rain splashes at the junction of two inclined surfaces. This article is devoted to what it is and how to install it.

Ridge for corrugated roofing - functions and uses

Most manufacturers of corrugated board produce, in addition to the profiled sheet itself, all the elements necessary for installation roofing system. The ridge for corrugated board is made of the same galvanized or polymer-coated steel as the profiled sheet itself. It is an organic part of the roof and is usually invisible, although in reality it plays one of the main roles in ensuring the reliability of the roof.

As with any pitched roof, the corrugated roof ridge is of particular importance. Its first and main function is to protect the under-roof space from moisture entering it from the outside. Given the very design of the pitched roof, it is almost impossible to implement this task in any other way.

Without a ridge, the service life of the roof will be greatly reduced, as well as its thermal insulation properties. Moisture will lead to corrosion of the metal and, if sufficient, to damage to the crate and truss system. Therefore, it is impossible to delay the process of laying the roof and, moreover, leave it for a long time in an unfinished state. From attaching the cornice strip and starting to assemble the sheets to the moment you complete roofing When installing a roof ridge from a profiled sheet, it should take no more than a few days.

In addition to protection against moisture, the ridge strip for corrugated board performs an equally important function - it creates the conditions necessary for roof ventilation. This is especially important for insulated roofs.

Since metal profiled sheets tend to heat up very quickly under the action of sun rays and just as quickly cool down in cold weather, a ventilation gap is always arranged between the waterproofing and the roofing from the profiled sheet. It is the air circulating in it that prevents the formation of condensate on the inner surface of the roofing, preserving it from corrosion and subsequent penetration of moisture into the insulation.

In order to ensure ventilation, the installation of the ridge on the corrugated board is carried out in such a way that air can freely exit both from the under-roof ventilation gap and from the ventilation gap between the insulation and the waterproofing film. At the same time, for free passage of air, the waterproofing membrane does not reach the roof ridge by 40-60 mm.

Scheme of a ventilated ridge for corrugated board

This ensures the through movement of air from the bottom up: starting from the edge of the slopes and ending with the ventilation hole under the ridge element. It should be noted that the attachment points of the waterproofing membrane near the ridge must be additionally insulated with a special tape, and this applies to both the edge directly adjacent to the ridge element and the junction between adjacent membranes - both on the sides and below.

Why do you need a ridge seal for a profiled sheet?

The corrugated board ridge is fastened with self-tapping screws through the upper corrugation of the corrugated board. During installation, a gap is formed between the surface of the ridge element and the corrugated board, equal to the height of the roofing profile. Even with the size of the ridge element of 200 × 200 mm and the height of the corrugated board trapezoid is more than 20 mm, splashes of water can penetrate into the under-roof space during oblique rain and strong wind. To avoid this, a special sealant for the ridge of the corrugated board is laid in this place.

The use of a ridge seal for a profiled sheet

It should be borne in mind that when filling the corrugations of the profiled sheet with a sealant, it is necessary to leave a gap for air circulation. If there is no gap or it is insufficient, then the ventilation of the under-roof space will be very limited, which will affect the life of the roof.

The ridge seal for the profiled sheet is selected for a specific brand of corrugated board and, as it were, reflects the shape of its corrugation. If the required sealant is not commercially available, you can use the universal option. Such a seal under the profiled sheet ridge has a simple rectangular shape and provides both protection from moisture and ventilation. However, it is more difficult to ensure a good fit of such a seal.

How to fix the skate on the corrugated board?

Before attaching the skate to the profiled sheet, you need to make sure that the upper edge of the slopes is approximately on the same line. To do this, you can use a laser rangefinder or a simple cord. The discrepancy is allowed, but at a level not exceeding 2% of the width of the ridge shoulder. That is, if you intend to use a ridge for corrugated board, the dimensions of which are 200 mm wide and 2 m long, then the divergence along the upper edge of the slope cannot be more than 200 0.02 = 40 mm. If the unevenness is greater, then this is fraught with roof leaks in such a place.

The ridge is an indispensable attribute of any pitched roof. This is the name of the joint of any two horizontal or inclined edges of the planes of the pitched roof. The correct execution of this element is very important for the reliability of the entire roof.

Ridge for corrugated roofing - functions and uses

Most manufacturers of corrugated board produce, in addition to the profiled sheet itself, all the elements necessary for the installation of the roofing system. The ridge for corrugated board is made of the same galvanized or polymer-coated steel as the profiled sheet itself. It is an organic part of the roof and is usually invisible, although in reality it plays one of the main roles in ensuring the reliability of the roof.

Without a ridge, the service life of the roof will be greatly reduced, as well as its thermal insulation properties. Moisture will lead to corrosion of the metal and, if sufficient, to damage to the crate and truss system. Therefore, it is impossible to delay the process of laying the roof and, moreover, leave it for a long time in an unfinished state. It should take no more than a few days from attaching the cornice strip and starting to install the sheets to the moment when you complete the roofing work by installing the roof ridge from the profiled sheet.

Ventilated ridge for corrugated board

Since metal profiled sheets tend to heat up very quickly under the influence of sunlight and cool down just as quickly in cold weather, a ventilation gap is always arranged between the waterproofing and the roofing from the profiled sheet. It is the air circulating in it that prevents the formation of condensate on the inner surface of the roofing, preserving it from corrosion and subsequent penetration of moisture into the insulation.

This ensures the through movement of air from the bottom up: starting from the edge of the slopes and ending with the ventilation hole under the ridge element. It should be noted that the attachment points of the waterproofing membrane near the ridge must be additionally insulated with a special tape, and this applies to both the edge directly adjacent to the ridge element and the joint between adjacent membranes - both on the sides and below.

Why do you need a ridge seal for a profiled sheet?

How to fix the skate on the corrugated board?

The corrugated roof ridge is fastened in increments of 200-300 mm, and the ridge elements are laid with an overlap of 150-200 mm and starts from the side opposite to the prevailing winds in the region. As a rule, the dimensions of the ridge for corrugated board are in the range from 2 to 3 meters. With a longer length, additional stiffening ribs or a greater width are needed to maintain the shape of the ridge.

Typically, the width of the "shoulders" of the ridge is in the range from 100 to 300 mm, which allows you to reliably close the weak spot from the rain. Fastening is carried out at the ends of the shoulders, at a distance of several centimeters from the edge, and in some cases, both the ridge and the seal can be fastened with one self-tapping screw.

The roof ridge assembly from a profiled sheet, as a rule, has one of three forms:

Simple L-shape;
Skate with a top in the form of the letter "P";
Skate with a round top.

The last option provides the best ventilation, but the price of a ridge for corrugated board of this form is higher. The cheapest option is just an L-shaped ridge, but at the same time it is no less reliable with a properly designed and installed roof.

Installation of a profiled sheet according to SNiP

SNiP requirements for corrugated roofing: content of regulatory documents, main points and serial numbers. On the page you can download the full version of SNiP II-26-76 for the roof.

Wind strip for corrugated roofing

The end strip for corrugated board is an important shaped element that protects the roof gable from the wind. About its types, choice, installation and prices - in other words, about everything that is important to know - read the article.

How to calculate corrugated roofing?

Calculation of corrugated roofing - it's easy! If you know how. Read the article and find out how to easily and quickly manually calculate the amount of corrugated roofing.

How to fix a roof ridge to corrugated board - fastening nuances

The ridge is one of the elements of the roof truss frame. It is necessary in order to prevent water from entering the space under the roof, to provide roof ventilation and to give the structure a decorative effect. In the article below, we will look at how to properly install a roof ridge and what consumables will be needed for this.

Roof ridge device

Before you fix the ridge on the corrugated roof, you should decide which shape will be optimal for a particular design:

Purpose

First of all, it is worth saying that the ridge on the roof is necessary not only to give it completeness and aesthetic beauty, but also to ensure the functionality of the entire roof structure.

Currently, the roofing pie includes several layers at once, including vapor barrier, heat and waterproofing. In addition, such a multi-layer design requires the presence of gaps for ventilation. In particular, the gap between the roofing and the insulation helps to reduce heat loss, regulate the temperature inside the house and ensure the durability of the insulating material. Consequently, in winter, an ice crust does not form on the roof, and in summer, the attic floor does not heat up to the temperature of the steam room.

Therefore, before putting the ridge on the roof, it is necessary to provide a ventilation gap in the roofing pie and take care of the circulation of air flows. To achieve this, the overhangs on the eaves are hemmed with a soffit, board, fixed with gaps, or other materials in combination with ventilation grilles. Please note that the fastening of the ridge to the corrugated board must be done in such a way that fresh air freely enters under it. In this case, moist air from the inside will freely leave the under-roof space, without settling in the form of condensate on the insulation and wooden structures.

Calculate the height

The calculation of the installation height of the ridge is made taking into account the following conditions:

the configuration and appearance of the building;
type of roofing;
the level of snow and wind loads in the region;
reasonableness in terms of economy and installation complexity.

Determining how to mount a ridge on a complex roof requires special software or the help of architects who can accurately calculate its height. If we are talking about a simple design with a slope of slopes in the range of 35-60º, the height of the ridge can be calculated using trigonometric formulas.

The subtleties of installation and fastening to corrugated board

Although the ridge run can be made of steel, still the owners of private houses mainly use wooden beams. However, before attaching the skate to corrugated wood, it must be treated with flame retardants and antiseptics.

To minimize the harmful effects of precipitation allows the laying of special elements from roofing material or galvanized sheet, and from the inside, waterproofing of the joints and arrangement of gaps for ventilation is performed.

Waterproofing and insulation of the roof, which will prevent condensation, are also performed before the ridge is made from corrugated board. However, an indentation for air circulation must be provided.

How to fix a ventilated ridge on a profiled sheet

Ventilation of the ridge element of the roof allows free air circulation in the roofing pie.

The technique of how to properly attach a skate to a profiled sheet involves the following manipulations:

On top of the previously installed rafter frame perpendicular to the rafters, it is necessary to lay and fix a layer of waterproofing. The overlap of individual sheets should be at least 15 cm, and the seams should be sealed with construction tape.
A batten rail and counter-battens are nailed to the rafter legs.
Next, the roofing is installed, which does not reach the ridge a little.
Inside the ridge run, a hole is made for ventilation, which will ensure free air circulation inside the roof. Waterproofing material under it is placed with an overlap.
When filing overhangs on the cornices, it is also necessary to leave to retreat for ventilation.

Alternatively, if the ventilation duct cannot be installed, several end windows are equipped inside the attic for ventilation.

Mounting the skate - how to do it right

It is very important to perform high-quality sealing of the ridge bar, for which you can use:

mounting foam;
special sealant;
cement mortar in the case of a slate coating;
compositions provided by manufacturers of roofing materials.

As a rule, special asbestos-cement ridge strips are sold for slate roofs. They are mounted on both sides of the ridge with an overlap of the upper edges and fixed with special nails.

For ceramic tiles, special ridge elements are provided. When using rolled materials or soft bituminous roofing, the ridge is insulated with a similar coating.

It is worth noting that you can make the ridge run more decorative with the help of special decorations that are commercially available in hardware stores.

Installation of a ridge on a roof from a profiled sheet

Roof complex structure, consisting of many different elements, for example, a skate. It performs many functions, without which the operation of the roof can be significantly difficult. And what ridge on the roof of corrugated board can be used? How to mount it correctly, and how to operate it?

What is a skate for?

The skate is installed on the roof of any house. The only exception is flat roof. This concept has two meanings. The ridge is the upper part of the roof where the slopes converge. In this case, either a run in the form wooden beam, or the connection of rafter legs. Also called a ridge is an additional element installed on top of the roof.

In the first case, we are talking about part of the roof truss system. In this article, we will focus on the skate, as an additional element. In this case, it is a bar that can be made from various materials and have different shapes.

The ridge for corrugated board or any other roofing material performs the following functions:

Protection of space under the roof. When laying corrugated board or other material on the roof slopes, it is difficult to make sure that the upper joint is sufficiently tight. In this place, a gap is necessarily formed. In order to prevent moisture from getting under the roof, a ridge bar should be installed. Protective function is the main one for this additional element;
Provides air circulation. When installing the ridge bar, a gap is created, which plays the role of an exhaust hole. The result is a ventilated attic. Ensuring air circulation in the under-roof space is very important, especially if the roof is covered with corrugated board or metal tiles. These materials have high thermal conductivity and heat up and cool down quickly. As a result, condensation forms on the underside of the profiled sheet. If the ridge bar does not provide ventilation, then the elements of the truss system and the insulation will quickly fail;
aesthetic function. The ridge at the top of the roof gives the entire building a finished look. Without this element, it is difficult to imagine any roof.

For all these reasons, it is necessary to install a ridge on a roof made of corrugated board or any other material in without fail. Only in this case, a long and trouble-free operation of the roof, and the whole house, will be ensured.

Shapes and sizes

Decking in modern construction is often used. This material is strong, durable, easy to install and inexpensive. Professional sheets are produced by many manufacturers, so there are many additional elements offered. They differ both in appearance and in characteristics.

The ridge element for corrugated board can be purchased in the following forms:

And what materials are used? What is the described additional element made of? The ridge used for roofs covered with profiled sheets is made of the same material. This is a sheet of galvanized steel. The ridge, as well as corrugated board, can have a protective layer of paint, polymers, or even do without it. The latter option is rarely used. Seahorse without additional protection will quickly start to rust. It is best to choose options with a polymer coating, in the color of the corrugated board used. In this case, the ridge will serve for a long time and reliably protect the roof from snow and rain.

For correct calculations, you should know the dimensions of the ridge for corrugated board. Here the choice is very large. As a rule, the length of the ridge bar is 2-3 meters. But in other sizes there are practically no standards. The width of the ridge shelves can range from 150 to 300 millimeters. The most popular option is 200 millimeters. A “larger” ridge will look too massive, and if the shelves are smaller, then the corrugated roof protection may suffer.

How to improve protection

The ridge covers the gap at the junctions of the corrugated board at the top of the slope. At the same time, it provides air ventilation under the roof. But installing a ridge bar does not guarantee complete sealing. Snow or raindrops will still blow under it. To prevent this from happening, you need to install a seal.

Similar products are available in several versions:

Ridge sealant for profiled sheet universal. It is made from expanded polyurethane foam. Such an addition to the ridge for corrugated board has a porous structure. He, on assurances of producers, perfectly passes air and stops moisture. But with the last statement, many professional builders and roofers do not always agree. float:="" left="" margin:="" https:="">
It is very important to check the evenness of the ridge rib before starting work. To do this, it is convenient to use a laser level or use a regular rope. Minor deviations are allowed, no more than two percent of the width of the ridge shelf. If the curvature is greater than this value, then you need to either correct it or use wider slats. Otherwise, the risk of leakage increases.

Roof ridge from corrugated board: fastening, installation, profile dimensions

On a gable roof, the top row of metal roofing always ends with the installation of the ridge on the corrugated board. No other way, except to close the gap between two adjacent edges by installing a ridge bar, has not yet been invented. The ridge on the roof of the profiled sheet looks a little pretentious, but much prettier and more reliable than semi-handicraft ridge seals of slate, shingle or rebate.

Features of skates for a corrugated roof

It’s worth clarifying right away that this is not about the ridge run of the truss frame. In this case, the ridge is called a horizontal patch plate made of thin-sheet galvanized steel, which must be installed at the top line of the junction of two roof slopes.

Mounting a ridge on a corrugated roof, in addition to a purely decorative purpose, has very specific technical goals:
- The overlay protects the formed joint between the edges of the corrugated board from the flow of melt and rain water, and the most terrible for a warm roof - condensing moisture. The overlap of the ridge on the corrugated board provides the most effective runoff and dripping of condensate onto the surface of the corrugated board;
- Proper installation of the ridge bar ensures continuous and efficient work roof space ventilation systems. The device of the ridge is such that a rarefaction of air is created on the air-flown profile, and most of the vapors, like a vacuum cleaner, are drawn out from under the corrugated board.
Protection from moisture and rain is considered an important, but not the only problem faced by corrugated roof owners. The edges of thin profiled metal must be covered from strong gusts of wind.

On the gable lines and cornices of the sidewalls and overhangs, you can install L-shaped extensions; for the ridge run, you have to use a special streamlined profile. With skillful installation, the corrugated roof ridge will reliably protect the upper edge of the roofing from deformation and breakage from the fasteners.

Types of skates for corrugated sheet roofing

To install a protective profile on the roof line, several types of profiled strips are used. Their design is chosen in such a way that the ridge is simple, and a person with minimal roofing skills could install it on the roof.

For Private gable roof Three types of profile are traditionally used:

In practice, the advantages of a round ridge can be noted only in the absence of condensation and dripping of water. In severe cold, the formed thin water film flows down the arcuate surface of the plank onto the surface of the corrugated board.

Dimensions of the ridge profile for the roof

To close the top of the roofing, strips of several sizes are used. This is due to the fact that the angle of inclination of the corrugated board on the roof can vary significantly. In this case, when calculating the dimensions of the ridge for corrugated board, it is necessary to take into account the correction factor according to the plate below.

The dimensions of the shelves of the simplest triangle are 140-145 mm for a standard roof and 190-200 mm for the most sloping and long slopes. Bevel flange width 10-15 mm.

Profiled skates with a rectangular rib are made with a width of 115-120 mm, the size of the stiffener is 30-40 mm. Semicircular skates are the largest, rounding diameter - 200-220 mm, side shelves - 85 mm.

The length of the individual sections, from which the ridge overlay on the corrugated board is assembled, is 200 cm for finished products. Simple triangular skates are also sold in 6 m pieces.

Ventilated ridge for corrugated board

For insulated roofs, for which even the slightest appearance of condensate is fraught with serious consequences, a scheme with a ventilated ridge space is always used.

For traditional corrugated roofs with a small slope, a standard triangular ridge is used, which is laid directly on the support beams of the crate. The cracks are sealed with sealant tape. Due to the small size of the ventilation ducts under the corrugated board, the rarefaction of air is sufficient to remove vapors and throw them onto the roofing.

If the roof of the house is rather flat, the height of the ridge is small, and the slopes under the corrugated board are relatively long, then composite ventilation systems are used in this case. The difference lies in the fact that the ridge pad is not laid on the crate beam, but on a special perforated frame. This reduces air resistance and allows water vapor to escape even at low roof heights.

Roof ridge seal

The presence of additional sealing material creates a slight resistance to air flow and reduces the efficiency of the ventilation system, but you cannot do without it.

The standard insulation is an accordion-folded geotextile tape with aluminum strips sewn on the edges. For fastening, a thick layer of butyl rubber is applied to aluminum, which adheres very well to the metal surface of the corrugated board.

How to fix a ridge on a corrugated roof

In order to install the ridge strip without any problems, the installation procedure must be started even before the roofing is laid. To work, you will need tools and materials:
- Roofing ridge for corrugated board, before starting work, it is necessary to measure the total length of the roof on which it is planned to install the lining;
- End caps and seal;
- Bulgarian and scissors for metal;
- self-tapping screws;
- File for metal;
- Roof sealant.
Of course, before setting the bar, the cutting line must be passed with a file, even if the material was cut with scissors for metal. If installed with burrs, then the edge of the metal, sharp as a blade, will peel off the protective polymer coating and zinc. As a result, a hole is formed in the place of overlap over time due to corrosion.

Preparation for work

It is possible to install a ridge overlay only if the upper part of the rafters and the batten is reinforced with a hemming. Parallel to the ridge run, two additional boards are sewn on each side of the existing roof sheathing. This will allow you to install the plank and firmly pull it to the wooden base.

How to wisely install a skate on corrugated board

After the corrugated board has been laid, it is necessary to check the distance between the upper edges of adjacent opposite sheets. Optimal size is 45-60 mm. With a larger gap, it will not be possible to set the bar normally, if the distance is too small, then the exit of vapors from the under-roof space will be difficult.

First of all, you need to cut the required number of planks. Installation starts from the leeward side of the roof. The ideal case would be a situation where the wind would not blow water under the overlap line, but such a good location of the ridge roof beam is very rare, so the overlap line has to be well “flavored” with sealant. Semicircular ridge elements are considered the most successful in this regard; at the ends of the profile there is a special protrusion that blocks water from flowing under the edge.

First of all, a sealant is unwound on the line along which it is planned to install the bar. The material is fixed on the surface of the corrugated board, guided by the dimensions of the lining.

By itself, the roofing of a professional sheet, laid by the hands of a professional, looks quite attractive. It is quite easy to spoil the beauty of the roof, for example, try to save money and bend the ridge bar from the remnants of the roof, and in addition, install the ridge on the corrugated board on the first material that comes to hand.

It is still possible to install a handicraft profile on the roof of a shed under corrugated board, but for a home a home-made overlay, even painted to match the roofing, will look too poor. It is better to buy a finished profile, especially since the price of high-quality material is low, only 150-200 rubles. per meter length.

Conclusion

If the installation of a ridge on a roof made of corrugated board is carried out according to the recommendations and advice of the manufacturer, then there will be no problems with leakage or ventilation of the roof. The choice is up to the owners of the roof, but home-made galvanized linings serve half as much as branded additional elements.