Advantages, characteristics and types of corrugated board. Roof decking: types, which one to choose and how not to run into a fake What is the best roof decking

Among the huge number of different roofing materials, the choice of developers quite often stops at corrugated board. There is no particular secret in this, because for a very reasonable price you can add variety to a series of dull facade structures and roofs.

Roofing corrugated sheet, or as it is sometimes called, corrugated board, is one of the most popular building materials. Both are made of sheet steel using cold rolled technology. They are protected from corrosion by a galvanized layer specially applied to the profiled sheet for the roof. The price per sheet of such a product is quite low, but the zinc layer is quickly erased, so for roofing works it is recommended to choose a material with a polymer coating.

On a note

For all their similarities, profiled sheets and corrugated board have some, albeit small, differences. For example, corrugated board is characterized by a rigid application of the profile. The profile sheet is less rigid and durable, besides, its profile is lower than that of corrugated board.

Roofing profiled sheet: technical specifications

The main characteristics include:

profile shape,
thickness
dimensions.

It should be noted that the professional sheet that covers the roof has a trapezoidal profile.

Roofing is carried out using self-tapping screws for fastening the profiled sheet. Possible surface damage that can later lead to corrosion can be prevented. For this, it is recommended to use seals.

Since the profiled material is made mainly in accordance with GOST, it is very convenient to work with it - the coating elements can be quite easily replaced or repaired.

Attention

If the material is made according to specifications, then the dimensions of products from different manufacturers may differ slightly (about 2–3 mm).

Roofing profiled sheet GOST 24045-94 is considered the highest quality, since this state standard regulates its dimensions and other technical characteristics as accurately as possible (up to 1 mm).

An important advantage of corrugated board is its size.

Length

Let's start with length. Modern equipment allows the production of products, the length of which can reach 14 m. Thus, it is always possible to purchase material that best matches the size of the roof of the house.

Profiled sheets of great length, of course, have a number of advantages. In particular, the number of joints during their use is sharply reduced, while the tightness of the roof is significantly increased. On roofs with a slope length of up to 14 m, horizontal joints are practically absent.

If we also take into account that the minimum overlap of the short ones is 20 cm, then the material consumption is also reduced in this way. So, there is also an economic component.

Unfortunately, the large dimensions of the profiles increase the cost of transportation. Therefore, products with a length of more than 10 m are made only by special order. In the residential sector, a profile with a length of 6 m is most often used.

roofing profiled sheet: dimensionstwo different brands

Width

The next important parameter is the width. Immediately, we note that it is necessary to distinguish between two widths:

a purely geometric value, for the determination of which you can use an ordinary tape measure;
useful, which takes into account the amount of vertical overlap for the length of one corrugation between adjacent elements in the same row. On average, it is 4–8 cm less than the overall width.

production of profiled sheet from galvanized steel

The thickness of the profile sheet corresponds to the thickness of the rolled product. As a standard, a material with a thickness of 0.5–1 mm is used in production, and the thicker it is, the stronger the profile.

According to GOST, corrugated sheets at the edges must have a special capillary groove in the form of a small bend. Such a trifle will help prevent condensation formed on the roof from getting onto the wooden crate.

professional sheet MP 20

The device of a roof from a professional sheet

Laying a professional sheet for a roof is not difficult, and you can cope with this task yourself.

For the arrangement of the roof, it is recommended to use sheets that are slightly longer than the slopes. In this case, the level of waterproofing of the structure increases significantly, since transverse joints are not formed on the slope.
To cut the material, if necessary, use a jigsaw, roofing shears or a circular saw with fine teeth.
The crate for profiled sheets of timber, boards or chipboard is stuffed either on the rafters or on the layers of insulation when installing a warm roof.
wooden elements must be treated with antiseptics and flame retardants. This procedure significantly extends the life of the structure. It is also desirable to lay a vapor barrier layer on top of the crate, which will minimize the risk of condensation on the surface of the metal roof.

Mounting technology

Metal profile sheets are a versatile material, characterized by ease of installation and optimal strength characteristics. When choosing a corrugated board for a roof, facade cladding, roofing or creating a modular structure, it is important to focus on the thickness of the sheets, type of coating, wave and other points. What kind of corrugated board to choose to start building a roof? Consider the features of the roofing material, its main qualities, and proceed to the arrangement of the roof.

Features of the production of profiled sheets

The standard sheet is made of steel with a thickness of 0.4 to 0.8 mm, which is hot-dip galvanized or coated with aluminium. Due to the processing of the corrugated sheet, the resistance of the material to corrosion improves, and the strength indicators increase.
After coating, the metal layer is lowered into the machine, creating the necessary “wave” and parameters. Owners country houses when buying a roof profiler, it is recommended to order its additional processing:

creation of a two-sided protective layer by passivation. Sheets are coated with a special compound;
additional staining on both sides - they work with a primer from the inside, and a polymer is applied to the outer part.

The quality of the coating provides a choice of which types of corrugated roofing will be relevant for construction, and allows you to determine the benefits of the material.

Advantages of metal profile sheets

For quality roofing own house, evaluate the advantages of metal with profiling. A good professional sheet has the following characteristics:

Ecological cleanliness - production was carried out by using non-toxic materials;
Rich coloring, which allows you to use the material that is needed to create a harmonious architectural ensemble;
Variable price range, so that the owners can choose the best type of sheets with profiling;
The standard seam length is 20 m. It is enough to cover the roofing surface with any slope without forming joints.
Ease self installation corrugated board on your roof, which can be done together.

If the owners know how to choose high-quality profiled sheets, they will ensure long-term operation of the house and the comfort of living in it.

Domestic GOST: requirements for profiled sheets

When planning to choose corrugated board for the roof, it will not be superfluous to pay attention to the technical standards of the material. Manufacturers adhere to the requirements of GOST 24045-94, because it contains the norms that the metal profile material must comply with - the quality of raw materials for production, the geometry of the profiles, the principles of marking, the features of testing products and the rules for transportation. According to the regulatory document, it is possible to determine which type of corrugated board is suitable for the roof. Depending on the marking that the profile has, the material is divided into:

"N". The index indicates the increased bearing capacity of the metal. A working width of 110 cm is enough to cover the roof with high quality.
"WITH". The letter marks the metal sheet used for arranging walls. It has a letter value from 21 to 21 and is intended for work in areas with a temperate climate;
"NS". Universal marking explaining the use of a metal profile for organizing fences, gates, sides of arbors. However, by choosing a sheet marked HC-35 or 44, it is possible to strengthen the roof in regions with extreme temperatures.

When comparing which corrugated board is better for a roof, stop at the metal with the indices "H" or "HC". The products have an optimal shape, profile parameters and maximum load-bearing capacity.

Varieties of profiled sheet

Manufacturers release Various types corrugated board, varying depending on the thickness, parameters, height of the crest, type of protective coating and color.

Wave height - determine the stiffness

For a roofing metal profile, it is important to take into account the height of the ridge - it is responsible for the characteristics of rigidity and throughput. Large indicators increase the cost of the roof, but ensure the longevity of the house.
The wave of profile sheets is from 10 to 114 mm, so consider its slope and slope area. The correct corrugated board for the roof is with a wave height of at least 20 mm.

Material thickness - set strength

Keep in mind that, depending on the thickness, the corrugated board determines what strength and reliability the roof will acquire. Metal profile sheets are produced with a density of 0.1 to 1 mm. When planning how to use the material correctly, notice how thick it is made:

for the construction of the roof, a steel sheet from 0.4 to 1 mm is optimal;
the thickness of the corrugated board for the roof determines not only the cost of expenses, but also the strength of the structure;
wind force justifies the use of a metal profile with a density of 0.45 - 0.5 mm;
thick coating will create a load on truss frame and beams, so the structure will need to be strengthened.

Its main parameters will depend on the thickness of the sheet.

Material dimensions - ease of roofing

The length and width of the profile material is always at the discretion of the buyer. There are no clear criteria for parameters, but it is important to know the following when choosing:

the dimensions of the profiled sheet will depend on the total area where the roof is being made. Before buying, draw up a drawing and ask the supplier to cut the rolled metal;
the length is selected according to the scope of use of the corrugated board. The dimensions of the sheet intended for covering residential buildings are from 6 m.
sheet width is set by production standards. Standard Options steel - 12.5 cm, but they vary in the height of the corrugations. To cover the house, profiled layers with a width of 0.98 - 1.85 m are relevant. Since the sheets are overlapped, the width is 40-80 mm less than the declared one.

To choose the right corrugated sheet material, calculate its quantity. Experts recommend buying 10-15% more metal profiles than required for work.

Do I need to take into account the slope of the roof?

It is imperative to take into account the angle of inclination of the surface. Even high-quality material will not provide tightness if the roof is designed incorrectly. From steepness roof slope depends on how much profiled sheet for the roof you need:

a slope greater than 10 degrees provides for an overlap of 30 cm and additional surface treatment with sealants;
a slope of 10 to 15 degrees contributes to an overlap of 20 cm;
a roof tilted from 15 to 30 degrees requires an overlap reduction of up to 17 cm.

On small slopes, profile sheets are laid with an overlap in two ribs.

Coating of profiles - prevention of corrosion

The rational choice of corrugated roofing should be based on the quality of its protection against corrosion and rust. On the surface of the house, sheets with several types of coating are used:

galvanized. It optimally combines price and quality indicators, but the zinc coating reflects the sun's rays and creates an uncomfortable microclimate in summer. Metal is suitable for organizing a garage or outbuildings;
aluminum silicon treatment. Increases the stability of the material, is applied to profiled sheets used for durable buildings - street arbors. Processed products acquire resistance to wet and aggressive environments.
pural. Material based on polyurethane components. Polyamide additives increase the reliability of sheets, increase their resistance to ultraviolet radiation. The composition applied to the metal profile sheet with a layer of 50 microns is frost-resistant.
polyester. Budget coating with a glossy and matte texture. Despite the absence of glare and color fastness, it is able to scratch and chip.
plastisol. In terms of reliability, it is comparable only with pural, since it is applied with a layer of 200 microns. Thanks to relief embossing and dashed notching, it is used under extreme climatic loads.

All steel elements during the coating are primed with anti-corrosion agents, covered with a chromate layer and a decorative composition. Therefore, what kind of corrugated board will be better for the roof, only the owner of the cottage, who has selected material according to the architecture of the object and the landscape style of the site, can say.

Criteria for the selection of profile sheets

When choosing which corrugated board to cover the roof, pay attention to its marking. Not only the alphabetic or numerical index is important, but also the GOST or TU marks. They mean compliance with the requirements of government regulations, which are higher than those of manufacturing companies.
There are other requirements that will help buyers how to choose corrugated board. Experts recommend focusing on:

Appearance of profile sheets. Check out the products. They should not have defects - chips, peeling, paint drips.
Geometric proportions of roofing material. The manufacturer must correlate the dimensions of the corrugated board needed for your roof with the products he has. Measurements of thickness, width and length according to GOST are a sign of a quality profile.
wave proportions. Profiled sheets are overlapped, so the upper corrugation necessarily covers the lower one. Thinking about what type of corrugated board to choose for arranging the roof? Purchase 20 cm of metal required in order to perform a high-quality overlap and reduce the risk of moisture getting on the roofing cake.
The quality of cutting sheets. At the factory metallic profile cut with a guillotine. Smooth and precise edges without nicks - a guarantor of the absence of rust.
Strength indicators. The round samples shown by the seller will not explain the strength of the material. Ask to see square patterns.
Sealed packaging. If the profiled sheets are properly packaged, they will not be damaged during transportation.

Be sure to ask the supplier to issue a guarantee for the product and present certificates of conformity. This will not only demonstrate the quality of the material, but also declare the responsibility of the seller company.

We select the brand of material

When considering which corrugated board to use for the roof, it is important to know its numerical index. According to the height of the wave and the thickness of the sheets, several types of material are distinguished

Profile marked C21

Is issued in the form of a trapezoid of standard length (2, 3 and 6 m). To complete the roof, you need to focus on the dimensions of the corrugated board: a width of 1.05 m, a wave height of 21 microns and a thickness of 0.4 - 0.7 mm. metal material suitable for creating roofing on a sparse batten or as a garage cladding.

Roofing profiled sheet С44

It is most convenient to work with sheets 1.47 m wide. The height of the profiled sheet laid on the roof is 44 microns, and the thickness varies from 0.5 to 0.8 mm. The profile is reinforced with additional stiffeners, provides for the construction of a roof on a crate with a step of 2 m, as well as frames for gazebos or change houses.

Decking with index HC45

The construction of a home roof can be carried out from corrugated sheets with a width of 1.06 mm. The recommended thickness is 0.5-0.8 mm and the profile height is 35 mm. Rigidity and strength of the material guarantee reliability roofing on the crate with a step of 4.5 m.
Having decided on the material, do not forget that its price depends on the alphanumeric index.

What you need to know about the price of a professional sheet?

Thinking what kind of corrugated board better fit for the roof, do not forget about its cost. When a metal profile sheet is below average, then they saved on its production. Try to choose products that are average in price.
Focusing only on the price is the wrong approach to buying, because the prices include the type of metal, its thickness, coating, production technology, transport costs and the promotion of the supplier brand.
Planning to do your own roofing? Consider all the recommendations for choosing and buying corrugated board. Be sure to study the slope of the roof, the climate of the region of residence - and you are guaranteed to find out which corrugated board will be ideal for your roof.

Decking is one of the most inexpensive and beautiful roofing materials. Reliable, durable and has the classic design that will never go out of fashion. But it is not uncommon for rusty streaks to appear on a new and bright roof after two or three years.

Therefore, let's study in more detail the question of what kind of corrugated roofing is needed, what is its advantage over other roofing materials, in what formats it is produced and how to understand complex markings.

Galvanized steel is one of the most widely used and cheapest materials in construction. And the corrugated board is made just from it: by cold rolling and subsequent decorative and protective polymer coating.

Profiling can create a wavy, U-shaped or trapezoidal shape in such a sheet. But this is a necessary measure, and not just an aesthetic effect - this way the strength and rigidity of the sheet increases at least three times. That is why such a simple and inexpensive sheet turns out to be quite a decent roofing material.

Second important point- the corrugated board consists of steel and does not give out any strong unpleasant odors like some of today's roofing. Easy to cut, easy to install. In addition, it can be laid on any roof, the slope of which is not less than 8 °, and the slope does not exceed 20 meters.

And one of the most important advantages of corrugated board as a roofing is its weight. After all, working on a steep roof with heavy, albeit more beautiful, material is difficult and unsafe.

Decided on just such a roof? Then it remains to purchase high-quality, durable sheets with the desired characteristics!

Types of modern corrugated board

The first thing you need to pay attention to is the type of coating, the wave height and the width of the corrugated sheet. Not every type of roof is suitable for a roofing device, this is important!

Marking

Corrugation height for roofing sheeting permissible within 10-114 mm. Just based on the height of the corrugation and the thickness of the sheet, three types of corrugated board can be found on the modern construction market:

Facade class C, which is used for the construction of fences and wall decoration.
Bearing class H, which is used for cladding walls and partitions.
Roofing, which just trim the roof. This is the NS class.

More details on the picture:

On the modern market, the most common marking sheets are H45, H75 and H114. On sale you will find sheets C10, C20, C35. The profiled sheeting of class CH is called bearing, wall, because. it is already used for the construction of roofs and solid fences. Its profile height is from 35 to 44 mm.

This diagram will help you understand:

If at the end of the marking you did not find the GOST inscription, then this batch was made according to a different standard. In addition to all this, marking A and B indicates the presence of painted sides, and R indicates the presence of a capillary groove.

Manufacturing technology

There are different types of corrugated board according to the manufacturing technology:

Rolled products with aluminosilicon coating.
Sheet metal with aluminum-zinc coating.
Thin sheet aluminized rolled products.
Sheet steel with zinc coating.

For example, AC is thin-sheet rolled products with an aluminum-zinc coating, and AK is the same technology, but with an aluminum-silicon coating.

Here is an interesting video about the production itself:

Please note that some models of corrugated board and more expensive metal tiles can be made on the same machine, but they will still differ in their qualities. It’s just that some models of corrugated board are universal. Such, for example, can be called S-20 corrugated board: PS-20 - wall corrugated board, and PK-20 - roofing. Just the same roll to make wall option and roofing is placed on different sides. And there is only one rental. In other words, this is the same profile, but with the reverse side.

Coating quality

Decking today is available in two types:

Made of thick galvanized steel, 0.5-07 cm.
Made of thinner galvanized steel (0.5 cm) with a modern polymer coating.

And the quality of the polymer coating of corrugated board can also be different. For roofing, the following are considered suitable:

Polyester. Excellent decorative qualities, but poor protection against mechanical damage. Abrasion and flaking are its main problem.
Pural. It is just as bad in wear resistance as polyester, but it costs much less.
PVDT, or polyvinyl difluoro. Excellent qualities of strength and light resistance, rich decorative range. The cost is higher.

For corrugated board, both sides of the sheet, one of the sides or none are painted:

Price formation

The total price of roofing corrugated board depends on the following sheet parameters:

The presence of a zinc coating.
The presence of color.
The presence of a protective coating.
The length and width of the sheet.
Sheet thickness.
Corrugation height.
Appointment of corrugated board.

Here is a rich choice in front of you!

What kind of corrugated board can be covered with a roof?

And now about what types of corrugated board are currently available specifically for roofing, and how one of them is better than the other.

There is a GOST regarding such coatings: "Profiles of building steel sheet bent with trapezoidal corrugations." It says that the thickness of the sheets should be from 0.4 to 0.6 cm.

In practice, most often, a profile sheet from 18 to 35 mm thick is used to finish the roof. Traditionally, this is the HC grade, which has the most optimal stiffness, rib height and sheet thickness.

In addition to the main options, the following sheets can also be used as roofing material:

Galvanized profile without polymer coating. Costs 40% less, suitable for roofing outbuildings and garages.
Ferrous metal corrugated board, also uncoated.
Expensive and durable corrugated board made of non-ferrous metals: copper or aluminum. The rarest variant.

And even a kind of exotic. So, a special corrugated board for the roof happens:

Made by cold rolling.
Bent to desired shape.
Perforated.
With spectacular textured wood or stone embossing.

You can give preference to any option you like, as long as one important requirement is met: all products in without fail should be a quality certificate.

Sheet format

So, the design and shape of the profiled sheet has been chosen, it remains only to build the crate and determine the dimensions of future sheets:

And at this stage, let's deal with the terminology a bit. So, the "waves" go across the slope, and the "rows" along, and the distance between the rows is called the pitch of the corrugated board. But “modules” are sheets that consist strictly of six waves and have a step of 35 cm. Now you understand what single-module sheets on the market are, three-module, six-module and ten-module, which are also called “warehouse” in another way. Those. standard.

Of course, the roof of your house is not the roof of a warehouse according to Soviet drawings, and such “modules” cannot be laid out to zero, without residues and the need for cutting. That is why it is fashionable today to order roofing sheets by individual sizes although, of course, you will have to pay extra for this. But the risk of corrosion on the roofing will be significantly reduced. In the everyday life of roofers there is also such a term as "lower cut". These are the lowest 50 mm of the sheet, which can be measured from the cut line to the crest of the wave. This value is 50 mm for standard stock sheets and up to 300 mm for special orders.

By the way, if the slope on your roof exceeds 6 meters in length, then, so that the corrugated board does not bend, it is better to order the material twice as short. For example, 3 meters each, taking into account the overlap, which for corrugated board is 100-150 mm. Every second wave will need to be fixed under the transverse pattern

What to do with sheets after purchase?

The first step is to properly transport:

Yes, and you also need to store the purchased corrugated sheets correctly. It is not uncommon for a situation where roofing material are brought to the construction site either ahead of schedule or before the rainy season. Then it is better to find a flat place, and fold the sheets so that there are bars of 20 cm in cross section between them. Each stack contains no more than 10 sheets! You don't want this expensive material to deform and become unusable before installation begins, do you? Therefore, approach this issue with responsibility.

If on the spot it turned out that some sheets still have to be cut - do not worry! You can easily handle this on your own. For this purpose, use ordinary metal shears (as an option - a hacksaw) for carving along the length, and for the formation of bevels - an electric saw with special teeth made of hard alloys. And here grinders with abrasive wheels will lead to corrosion of metal sheets.

How not to run into fake corrugated board?

So we figured out which corrugated board to choose for the roof of your house. Agree that roofing is an extremely important stage in the construction of the whole house. Walls and even foundations are much easier to repair than roofs because of the height. Therefore, when buying a metal profile, be sure to find out what raw materials these sheets were made of. You do not burn with the desire to see this on your own roof in a year, do you?

First call: price

The most dangerous period in terms of fakes in the construction market is summer. It is at this time that everything is built - the weather and air temperature allow. It is quite difficult for large manufacturers to plan sales volumes, and it is not uncommon for the corrugated board to be out of stock in the midst of construction work. This is when small handicraft firms come into play. They buy wherever they can find the cheapest raw materials - Chinese, Indian or domestic, stored for a long time in inadequate conditions and almost decomposed. Sheets are produced on home-made simple machines, which are then sold on the market as “quality material”, with a small difference in price. Most often, the buyer is offered a discount of 10-20% of the cost of “the same corrugated board as a large manufacturer, why overpay for a brand?”.

So the first warning sign is the price. And it is formed depending on what was the purchase cost of raw materials - one ton of galvanized steel roll. From expensive raw materials, expensive corrugated board is produced, and from cheap - cheap. And then the price is already formed from how thick the sheets themselves will be. That is why, if the manufacturer offers you a relatively inexpensive corrugated board of normal thickness and with supposedly high technical specifications- only cheap raw materials, Chinese or Indian, but not European, could go into consumption. You can check your guesses at the office of the trading company by asking to see certificates and taking samples of the material.

But the fact that the raw materials themselves cost the scammers literally a penny, the buyer may not know - for him, after all, the price is sometimes set not at all a penny ...

Second call: promises

The second wake-up call is promises to fulfill the order too quickly, i.e. make sheets of the right size. Yes, there are always intermediaries between any major manufacturer and buyer - at least two. And it is from them that you order the goods. But in any normal company they will not bring it to you earlier than 10 days, but on the market they will promise much faster, after which they will break the deadlines and explain their behavior by a breakdown of some line.

Third bell: fast delivery

Even more often, the buyer is forced to buy ready-made sheets, only at a price much higher than standard ones are sold. Actually the seller quality material, who cooperates with a real manufacturer, will immediately say that it takes time and will not impose what is already lying around.

But the biggest deception is that fake corrugated board is also thinner than the declared parameters. After all, 99% do not have a micrometer available and certainly do not know how to use it, and as a result, the roof of their house is covered with material much thinner than required by the rules. The deviation that is permissible is only 0.05 cm, i.e. 5 cm, but no more. If you run into scammers, get a micrometer and get ready for a shock.

But we hope that our advice in choosing corrugated roofing will help you avoid all these annoying mistakes, and your roof will be the brightest and highest quality in the area!

Modern building trends are more capricious and changeable than fashion, as manufacturers, competing for the attention of buyers, offer more and more durable and attractive materials. Professional sheet, which 10-15 years ago could only be used for roofing outbuildings, garages or industrial buildings, has changed a lot and has become a presentable coating worthy of country cottages and townhouses. This evolution has come about through the improvement performance characteristics material, increasing the service life, improving the appearance of corrugated board. In this article we will tell you how to choose a corrugated board to cover the roof of a house with high quality.

Profiled sheet is a roofing material produced on the basis of galvanized steel sheets, the thickness of which is 0.1 - 0.8 mm. It is produced using cold-rolled technology and is used as a roofing material for the construction of the roof of residential buildings, outbuildings, and industrial facilities. Profile sheets are produced in the following types:

Important! Manufacturers produce unpainted and painted corrugated roofing. By itself, galvanized steel has limited corrosion resistance, so it only lasts 8-10 years without a protective coating. The profiled sheet with a polymer film is much better resistant to moisture and has a service life of up to 30-35 years.

Performance characteristics

The assortment of corrugated board for roof construction includes hundreds of items, differing in color, thickness, weight and service life. All these characteristics ultimately affect the price of the material. A profiled sheet is distinguished by the following parameters:

Thickness. The thickest sheets of 0.6-0.8 mm are used for the production of load-bearing corrugated board, which has high strength, resistance to deformation and high weight. The thickness of wall marks is only 0.1-0.4 mm, they cannot support the weight of a person and are not used for roofing.
Zinc protection. Steel is called galvanized when it is applied to the surface of the metal electroplating from zinc, which increases the anti-corrosion properties of the material. Depending on the amount of zinc per unit area of the base, there are 3 classes of profiled sheets - business, standard and premium. In premium brands for 1 square meter at least 275 grams of zinc is applied to a steel sheet, and only 126-200 grams to a business. The thicker the zinc layer, the longer the service life and the price of such a material.
Polymer or paint protection. The coating that gives the corrugated board color is also a protection against moisture penetration and corrosion. The profiled sheet is painted with special compounds or by applying a special polymer film made of pural, plastisol or polyester. Polymer-based coatings are more resistant to temperature extremes, moisture, ultraviolet radiation and other external influences, and therefore last much longer.

Note! It is possible to determine which type the profiled sheet belongs to by visual assessment. It is necessary to pay attention to the wave height of the material. For the roof, more embossed grades are used so that atmospheric precipitation easily flows down the gutters. To build a fence or sheathe walls, corrugated board with a wave height of not more than 200 mm is used.

Advantages

When it comes to roofing materials, homeowners often try to save money, but fall prey to their shortsightedness when the roof starts leaking after a year. In order not to spend too much, but lose in quality, you need to use high-quality material of a suitable brand. Roofing from corrugated board has the following advantages:

Experienced craftsmen always pay attention to the appearance of corrugated board before buying. It must have the same thickness over the entire surface, a homogeneous paint and varnish or polymer coating, it must not have cracks, chips, scratches. Only with the help of high-quality material it is possible to build a durable and reliable roof that will not fail in the heaviest rain.

Video instruction

What is the best decking for a roof? Which one to choose for decoration? When choosing, pay attention to:

optimal quality of raw materials;
the dimensions of the profiles must correspond to the geometric parameters, all sheets must be made in exact accordance with each other. You can measure the dimensions with a tape measure, a metal ruler or a height gauge.
in case of doubt about the quality of products, you can request from the consultant documents confirming the quality of products;
it is necessary to monitor compliance with the requirements for storage and proper transportation of corrugated board, the products should not be deformed. You can check the quality of products in the store, if possible, you should go to the warehouse of the supplier's company and inspect the goods for damage and compliance with the required parameters;
when buying a product, pay attention to the packaging. It must be developed according to the manufacturer's drawings, be sure to protect the sheets of corrugated board from mechanical damage, and prevent their displacement during transportation.

important for roofing bearing capacity and the possibility of correct distribution of gravity over the entire surface of the material. The corrugated board will withstand large static loads, especially in winter, for example, when a large amount of snow falls.

A large bearing capacity is given to the profile through the creation of corrugated board in the form of high waves, the development of a special configuration. Often, manufacturers provide additional stiffeners that are necessary to increase the longitudinal rigidity of the corrugated board.

Its bearing capacity depends on the thickness and weight of the profiles, therefore, for installation reliable roof you should know several characteristics that are decisive when choosing corrugated board, and analyze the suitability of each brand for a particular building.

Material thickness ranges from 0.4 mm to 1.2 mm. The minimum values are only suitable for wall structures, and the maximum are necessary for load-bearing varieties, in particular, for roofs. They are able to withstand heavy loads, while the service life is quite long. They are used in workshops, hangars, laying is possible floors therefore they are considered as the most reliable.

It is recommended to choose brands of corrugated board which are equipped with a polymer coating or galvanized corrugated board. They do not rust under the influence of moisture, for example, from dampness, a sharp change in temperature will not deprive the metal protected by a special coating of its bearing properties.

For a small roof, where the need to withstand significant, long-term loads is not expected, it is allowed to use grades of corrugated board that have a small thickness. They are lightweight (from 4.5 kg), they are easy to lift to a height. Installation is considered the easiest, since the coating is quite thin, and the corrugation height can be only 8 mm or more. Thin sheets are used only for small roofs with steep slopes, at least 7 °. The roof will have a neat appearance, and installation work can be done in one day.

Types and brands of corrugated roofing

All types of corrugated board are divided into types with a specific marking:

"N"- profiled sheet with high bearing capacity, used for flooring. These profiles have the highest thickness, the height of the corrugation is made maximum. Often, such materials are equipped with additional grooves, which make them more resistant to the perception of any kind of load.
"WITH"- corrugated board used for walls, for example, for enclosing structures. Sheets never exceed the average thickness, the height and shape of the corrugations is ideal for vertical installation. Experts do not always recommend using corrugated board of this type as a protective coating for the roof, since there are risks of deformation, especially in regions where there is a large amount of precipitation or snow does not melt for a long time.
"NS"- universal corrugated board, used for any buildings, suitable for flooring, can perform load-bearing functions. The thickness of the layers is average, the corrugation is not very high, the creation of additional grooves is not used.

The range of corrugated board is huge, however there are the most popular brands, which have long been used in private construction:

RN-20- a universal view, often used for roofing, but it is also used in the construction of fences, and in the lining of a building inside and out. It is distinguished by the presence of a special groove necessary for the flow of water falling to the surface. It should be remembered that for the installation of corrugated board of this brand, a crate is required, located in increments of up to 80 cm.
S-21- a thin profile that is allowed to be installed on the roof due to its sufficient rigidity. Reliably protects the structure from precipitation.
NS-35, 44- a commonly used brand that is simultaneously suitable for roofing and building envelopes. Differs in the increased durability. C-44 is equipped with stiffeners, which adds an indicator of quality.

Should be chosen carefully protective covering , information about it can be seen on the production packaging or by asking the seller:

The zinc coating is notable for its low price, however, it is the most fragile, therefore it is quickly erased from the corrugated board.
Aluminum mixed with silicon gives a more durable protection to the metal, but also lasts only a few years before becoming useless.
Polyester as a coating is considered a reliable option. You can choose the right color and don't worry about the impact negative factors on metal.
Polyester with Teflon - reinforced protection. In addition to optimal quality, the developer is provided with a more complete palette of colors to choose from.
A mixture of PVC with additives is famous for its excellent durability, allowing you to choose from a huge range of colors.
PVDF helps to protect the roof covering from any harmful influences, therefore it is considered to be the most durable, the best option for protection of sheets of a professional flooring.

Profiled colors

When choosing colors corrugated board for the roof should adhere to several principles. The color of the roof covering should be in harmony with the shade of the walls, the basement. Disharmony of the color proposed for selection with any external structural element should be excluded.

The main tone of the roof can be contrasting or plain with the exterior elements. Thanks to the already chosen shade dormer windows, tongs, chimney, you can easily choose the right color for corrugated board or come up with original combinations.

The roof must match general style buildings. You can not use colors and shades that are not characteristic of a particular direction in architecture. The structure should not merge with the surrounding interior. For example, if there are a lot of trees nearby, you should not make a roof of green shades. The design of the roof should not exactly repeat the appearance of the houses located nearby.

If there are no unusual ideas about choosing a color, you can use the classic schemes, the use of which guarantees an aesthetically attractive result. Stonework looks great with red corrugated board, and a log house will look interesting with a white or orange roof.

Should be remembered that the perception of tone depends on the surrounding objects and the angle of incidence sun rays. The color can change if you look at it not close, but moving away at a certain distance. For example, green roof from a corrugated board from afar it will seem bluish. To avoid unwanted shades, you can install test variants of various sheets of corrugated board or carefully consider any possible deviations in the planned shade.

Prices for roofing sheeting

The cost of corrugated board for the roof by 80-85% consists of the price of materials for its production. First of all, take into account:

metal thickness. The higher it is, the more expensive the corrugated board costs. This factor should be carefully considered, since an increase in sheet thickness by 0.1 mm can significantly extend the life of the material.
Corrosion protection. If the corrugated board contains the optimal amount of zinc, this material will not be cheap. If a supplier offers to purchase a material at a reduced price, this factor should be checked.
Company manufacturer. Established companies charge higher prices for goods. They provide high quality, unlike firms that offer cheap goods and do not improve products to the generally accepted level.

Photo

Before choosing a corrugated roof, you should familiarize yourself with ready-made samples of its application. Perhaps among the color combinations there is a building with already turnkey solution, which appearance resembles a specific building. You can also notice how materials of different quality and height of the corrugations look. Viewing and analyzing examples of corrugated house roofs always helps to make the right and balanced choice.

Photo gallery of roofs covered with corrugated board.

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