Which is better to take corrugated roofing. How to choose a corrugated roof: expert advice. Types of corrugated board for the intended purpose

Carried out among the participants of the portal, the top three among roofing coverings in demand in private housing construction is closed by corrugated board. It is inferior to metal and flexible tiles, but surpasses other roofing materials in popularity. And if for some a concise profile is a minus, then others choose this coating precisely because of the visual component. In any case, corrugated roofing is a fairly common phenomenon, it would not be out of place to consider this material in more detail.

What is corrugated board.
Varieties of profiled sheet.
How to choose corrugated board for the roof.

What is corrugated board

Profiled sheet, it is also a professional sheet or corrugated board (less often a metal profile), sheet material, made of galvanized steel by cold rolling (profiling). Modern corrugated board is produced with profiles of different types, but trapezoidal has become more widespread. And although the profile significantly increases the decorative properties of the material, first of all it gives it the necessary characteristics - it increases strength, rigidity, load-bearing and throughput.

To prolong the service life of the metal, polymer coatings are applied to the surface after profiling - they not only protect the sheet from external influences, but also significantly increase the decorative effect. Today, profiled sheets can be bought in almost any color, both with a matte and glossy surface. As for polymers, the same ones are used as in the production of metal tiles - polyester and polyurethane derivatives.

The service life of the profiled sheet primarily depends on the parameters of the steel base and the zinc layer, but the protective and decorative coating also contributes. Without a polymer film, zinc immediately reacts with the environment. This does not mean that it will be “washed away” in a few years, but such a roof will last less. However, no polymer layer guarantees professional sheeting for many years if the basis is too thin steel and an insufficient zinc layer. As in the case of metal tiles, the production cycle usually includes profiling and coating, and the steel is purchased from domestic or foreign enterprises. Accordingly, the quality of the final product will depend on the quality of raw materials.

Varieties of profiled sheet

By and large, today the profiled sheet differs from the metal tile only in the shape of the profile, as it is made of the same galvanized steel with polymer coatings. And if insufficient decorative effect is often attributed to the disadvantages of a profiled sheet, then one of its main advantages is considered to be “tolerance” to the crate. Unlike the MCH, the step between the elements can be much larger, and it does not have to be strictly observed. This not only saves on lumber, but also simplifies preparatory process. As for the maximum allowable slope angle, metal tiles and corrugated board are similar in this indicator.

Pil18

Profiled sheets are preferably used on the roofs of buildings with an inclination angle of 20 degrees. Allowed for industrial facilities with a self-supporting profile minimum slope corrugated roofing at least 8 degrees, and for residential buildings - from 10 degrees.

Initially, corrugated board was not intended for use as a roofing material and was produced in three types:

C - wall, for cladding facades, gables and fences;

H - bearing, with increased bearing capacity, for pouring lightweight monolithic ceilings;

NS is universal.

Nevertheless, roofs were covered with wall, load-bearing, and universal corrugated board back in the USSR - but if then it was mainly hangars, warehouses and other industrial facilities, today it is not only various sheds and outbuildings, but also private houses. The possibility of using C, H or HC profiled sheets on the roof depends on the height and shape of the ridge - with an equal base thickness, it is these indicators that provide the sheets with sufficient bearing and throughput. In order for the wall profile to be used as a roofing profile, the ridge height must be from 21 mm, a universal one is also in demand, since it has this indicator of 35 mm.

As for the bearing profiled sheet, it is also used for roofs, but this is not practical, even in order to save wood.

Sofa owner

In general, all profiles above 45 (C 45) are meaningless for use on the roof purely economically. It is all the more pointless to use profiles of the H group, since an attempt to use their high bearing capacity in order to save on the crate truss system turns either its (truss system) weighting, or subsequent collapse.

Demand creates supply, and today manufacturers offer profiled sheet, specified for roofing applications, which not only has a special profile shape, but also a groove for condensate drainage, thanks to which the height of the ridge can be lower than 21 mm. Such sheets are marked with the letters R, but some brands also add the abbreviation (MP, SIS). However, the downside of a low profile is the dependence on the base - due to the low rigidity, such sheets require frequent, and sometimes continuous lathing.

What to look for when choosing a corrugated roof

The advice “to look at the root” is also relevant in this situation, only the core is the root, namely, the galvanized steel base of the corrugated board. The thickness of the metal, excluding the polymer layer, should be at least 0.5 mm, and the zinc coating should not be lower than the second class (140 g / m²), but the higher this indicator, the better. If the rigidity of the corrugated board depends on the height of the profile, then its resistance to corrosion depends on the thickness of the zinc coating. Usually, fading resistance is also important for consumers.

Oleg_Owl

It's time to buy a metal profile and all additional materials. Definitely profile C 21, but I can’t decide between the coating:

polyester gloss;
matt polyester.

I am most interested in corrosion resistance and what is less fading.

Pil18

Corrosion resistance will be higher for metal with a high zinc content - 275 g / m². In terms of color fastness - matte coatings are better when it comes to polyester. But polyurethane coatings are better than polyester (polyester).

Understanding why corrugated board is better than others building materials this is only the first step in the study of this material. Having decided, you need to make a choice within the material itself, which corrugated board is better for the roof of the house.

The requirements for roofing corrugated board are more stringent than for wall ones, which means you need to know what properties it has, what to look for when buying or ordering, taking into account the characteristics and dimensions of the corrugated sheet.

The material was prepared for the site www.site

What kind of corrugated board to choose on the roof of the house?

1. Scope and purpose of roofing corrugated board

The choice of corrugated roofing begins with determining the location of its installation. It serves as a starting point and determines the criteria for selecting a sheet and, ultimately, the cost of the project.

Due to its high performance and reasonable price, corrugated board is used as a roofing material in private construction for:

country, country houses, cottages;
garage and outbuildings;
gazebos, verandas, awnings;
temporary buildings.

Naturally, the requirements for choosing a roof for each of the objects will be different. For example, when choosing corrugated board for a residential building, it is required to take into account the coverage area, roof configuration, number of slopes, average annual rainfall, installation complexity, sheet replacement complexity and other factors.

At the same time, the roof of the canopy over the porch or front door may be made of cheaper or more practical material. A small area provides high maintainability of the roof, and the level of precipitation does not have a significant effect on the roof.

2. Height of corrugated board wave

If the choice of corrugated board for a fence or a wall begins with studying the types of coverage, then for roofing, the main parameter will be the wave height, which determines two important parameters:

rigidity;
throughput.

Both values have a direct impact on the life and quality of the roof from corrugated board. The larger the wave, the greater the rigidity and throughput, but the more expensive the cost of the roof. To understand what kind of corrugated board is needed on the roof, it is necessary to take into account the angle of inclination and the area of \u200b\u200bthe slopes.

Distinctive properties of roofing corrugated board:

all types of corrugated board intended for installation on the roof have a wave height of over 20 mm. Deeper profiling eliminates the possibility of water getting under the sheet;

since the roofing sheet is designed to be installed on the roof, this explains its configuration. Unlike wall, it has a wider bottom of the wave, which provides a free stack of water and increases the throughput of the roof;

it is required to take into account the angle of inclination of the surface intended for covering. The smaller the slope of the roof, the higher the wave height of the corrugated board should be;

the angle of inclination determines the amount of overlap;

When installing high-wave corrugated board on a roof with a small angle of inclination, it is necessary to provide an overlap in one wave.

When installing a small-wave - the absence of a high wave can be leveled by an overlap in two waves. It should be noted that this significantly increases the cost of a corrugated roof.

The longitudinal overlap also depends on the angle of inclination and requires compliance with the same calculations when overlapping, the smaller the angle, the greater the amount of overlap.

the presence of a capillary groove. It serves as an additional barrier to prevent the ingress of melt and rain water under the profiled sheet, as well as to protect against condensate that appears during temperature changes. At the same time, the groove is not a panacea, and will not save the roof from leakage if the wave height is chosen incorrectly.

The capillary groove is profiled along the entire profiled sheet. During installation, it is closed by a covering wave of the next metal profile sheet.

Manufacturers offer different types corrugated board with wave size from 20 to 114 mm. At the same time, corrugated board with a wave height of more than 44 mm is rarely used in private construction.

3. Dimensions of corrugated roof

The technical characteristics of the roofing corrugated board are shown in the table (dimensions: thickness, width, length, weight, height and wave pitch).

Characteristics and dimensions of C21 corrugated board

4. Type of corrugated board coating

Decking is profiled sheet metal with a protective coating that protects the iron core of the sheet from rust.

When choosing which corrugated board is better to use for roofing, you need to know that there are two main types of corrugated board:

Unpainted corrugated board

This category includes galvanized or aluminum-galvanized profiled sheet, which has an estimated service life of 5-15 years. Manufacturers rarely provide a guarantee for more than 5 years. At the same time, the galvanized aluminum material will last longer, because. zinc in this case will weather at a slower rate, which means that the core will remain protected longer.

When choosing unpainted corrugated roofing, you need to know that its service life depends on the thickness of the protective layer. According to GOST 24045-2010, the thickness of the galvanized coating should be 275 g/m2 or at least 90 microns.

Typically, galvanized corrugated board is used for roofing temporary buildings, sheds and outbuildings.

Painted corrugated board

It has more degrees of protection in the form of additional layers of polymer coating.

Depending on the type of finish coating, manufacturers provide a guarantee for the material up to 25 years. The duration of the warranty and the estimated service life depend on the type of coating:

roofing sheeting coated with polyester (PE) glossy or matte. The thickness of the glossy PE layer is 20 microns, matte - 35 microns. The service life and properties are approximately the same, only the difference is appearance. PE is strong, slowly and evenly burns out, suitable for use in the temperature range from - 30 to + 80 ° C;

roofing sheeting with pural coating (Pural). Coating thickness 50 µm. The coating is based on polyurethane, which gives it resistance to abrasion;

roofing sheeting coated with plastisol (PVC). The thickness of the plastisol is 200 microns.

polydifluorionad (PVF2). It is developed for operation in difficult climatic conditions. The most durable coating for corrugated board, however, and the price of PVF2 corrugated board is the highest.

5. The thickness of the corrugated board for the roof of the house

Manufacturers offer profiled sheets with a thickness of 0.37 to 1 mm.

What thickness of corrugated roofing will be optimal?

Users and craftsmen advise using 0.45-0.5 mm. The choice of such a thickness is justified by the fact that a more significant wave height, compared to wall corrugated board, provides the roof with the necessary rigidity. You should be aware that for large snow loads it is better to give preference to thicker metal. Some manufacturers provide stamping (additional stiffening ribs on the surface of the sheet) which increases the longitudinal rigidity of the corrugated board.

Advice. When choosing the thickness of corrugated board, it should be taken into account that the deviations in metal thickness are +/- 0.1 mm (GOST 24045-2010 and EN 10143).

6. Color of corrugated roof

Color does not affect the technical parameters of the corrugated board. However, when choosing corrugated board, one should proceed from the color scheme of other buildings on the site, facade decoration and other factors so that the roof of the house does not stand out from the general design concept. The colors of the corrugated board correspond to the RAL palette (from the Finnish manufacturer Ruukki - the RR palette), which simplifies the selection of colors.

Note. When choosing a color, you need to take into account that any coating is exposed to ultraviolet radiation (fading in the sun). Therefore, if it is necessary to replace one sheet, a mismatch in shades is not excluded. The more time has passed since the installation of the roofing corrugated board, the more it will manifest itself.

profile view. This is the easiest way to determine which roofing sheeting is best. Of course, one that does not have defects, chips, peeling or sagging of paint, "stretch marks", etc.;

a clear geometry of the dimensions of the roofing corrugated board. The manufacturer is obliged to provide the opportunity to measure each profiled sheet in terms of thickness, length and width. Deviations greater than the minimum allowable (according to GOST 24045-2010) - a sign of a violation of manufacturing technology. Even knowing how to properly fix the corrugated board to the roof, it will not be possible to mount obviously defective sheets (non-standard) with high quality;

covering wave geometry. The first wave of the top sheet should very accurately cover the last wave of the bottom sheet. In this case, the likelihood of water getting under the sheet will be minimized;

edge quality. Cutting (cutting) of corrugated board in the factory is carried out with a special device - a guillotine. Such a cut is very accurate and even (without chipping and influx of paint). This is an indicator that the sheet will not begin to rust from the edge;

roof deck strength. demonstrating color scheme the seller will most likely show you a selection of round swatches. This shape was not chosen by chance, a round sample is more difficult to bend than a square one. Therefore, the sheet seems durable.

In practice, you can check the strength of a corrugated sheet in a simple way, with a little effort: with a slight bending, the profiled sheet will easily return to its previous shape, and with strong pressure, the bend will remain.

availability of specifications and layouts of corrugated board. This does not apply to the choice of a professional sheet directly, but it is necessary when buying material for the entire roof. After all, you need not only to know how to choose a corrugated roof, but in what order should the purchased sheets be placed, especially in the case of a roof of complex configuration;

corrugated board packaging. Its presence is important only at the stage of storage and transportation. It must be removed before installation. After prolonged exposure to ultraviolet radiation on the protective film on the profiled sheet, it cannot be removed and significantly spoils the appearance of the roof;

guarantees and certificates for profiled sheets. They allow to judge the reliability and responsibility of the supplier.

8. Price of corrugated roofing

Deciding which profiled sheet for the roof is better, and being guided only by the price of the material, is a deliberately wrong option. The cost of corrugated board consists of the quality of the metal, its thickness, type of coating, the image of the manufacturer, the quality of the equipment used for profiling, storage and transportation conditions. All of these factors add to the cost while maintaining proper sheet quality.

If the price of corrugated board is below the market, this can only be explained by a decrease in the thickness of the metal, the thickness of any of the coating layers, and violations of production technology. Such a proposal should be treated with caution. After all, it is much more difficult to replace a sheet of roofing corrugated board than, for example, sections of a fence.

9. How to choose the right roof decking - video

10. Pros and cons of corrugated roofing

Parallel comparison of the advantages and disadvantages of a profiled sheet for roofing.

Advantages

low price of the material;
the ability to do the installation yourself;
resistance to the influence of environmental factors;
resistance to corrosion (in the absence of mechanical damage and defects in the core of the sheet);
light weight;
safety (fire and environmental);
the ability to use for mounting on a slope of any configuration and with any angle of inclination (even completely flat);
the ability to set the direction of water movement from the roof;
aesthetic appearance of the building.

Flaws

corrugated board makes noise during rain and even more so, hail (to eliminate it is advised to lay down instead of crates OSB boards or OSB plywood);
condensate accumulates on the surface (it is necessary to make good vapor and waterproofing);
the profiled sheet is prone to the accumulation of static electricity (grounding is required);
rust appears in the places of drilling and cutting (carefully treat such places with paint or movil).

Conclusion

Summarizing, we note that it is possible to choose a corrugated board for a roof even without the experience of professionals, it is quite critical of the seller’s slogans, familiarize yourself with GOST and know for sure that the phrase “for the price and the product” characterizes the material in the best possible way.

To cover the roof today, a variety of materials can be used, they all differ not only in appearance, but also in their characteristics. One of the most commonly used today is a metal profiled sheet, the so-called corrugated board. It is produced by cold rolling, in this way it is given a characteristic appearance. Outside, the metal is covered with a layer of protective zinc and polymer. However, there are many options for corrugated board, all of them are designed to perform various works. Choosing the right one is quite difficult, but it must be done. What decking is better? What exactly do you need to pay attention to?

The advantages of corrugated board over other roofing materials: corrosion resistance, low cost, the ability to lay on top of old material, ease of processing and ease of installation.

Characteristics of corrugated board

To cover the roof, a special bearing or wall steel sheet is used, characterized by the following characteristics:

Components of the corrugated sheet layer: steel, zinc, polymer coating.

reliable weather protection;
light weight that makes possible installation professional sheet for any home. Installation of such roofing can be carried out without the involvement of heavy construction equipment. This makes construction more economical and faster;
the sheet itself is quite durable, it is resistant to ultraviolet, acid rain.

But when choosing, you need to pay attention not only to such advantages, but also to the parameters of the sheet itself. The material must be suitable for roofing works, it must have a certain thickness, wave height. Today it is easy to determine this, manufacturers apply special markings that allow you to quickly select exactly the corrugated board that you need.

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Product range

Another name for profiled sheet is profiled metal, that is, a sheet passed through a special rolling machine. The first samples of such materials were obtained as early as 1820, when the steel sheet was given wavy shapes by cold rolling. Since then, the technology for the production of such metal flooring has constantly improved, today you can purchase a truly versatile material with the highest performance characteristics.

To protect against corrosion, the outer sides of steel are coated with zinc, often there is an additional polymer coating.

Table of types of load-bearing corrugated board: characteristics, applications.

Such corrugated board is used for a variety of works, it is especially popular for the construction of fences, they can cover the roof. The scope of the material is quite wide:

professional sheet is used for the roof of the house;
for the construction of fences;
to perform a load-bearing floor during the construction of a residential building;
as facing material for walls and facade, plinth;
as fixed formwork for many monolithic structures.

What roof decking fit better? Today, manufacturers offer a wide variety, but not every type can be used as a roofing. The product range includes the following grades of profiled steel sheets:

"C" is used for wall cladding, fence construction, for the roof of the house;
"NP" has a large thickness, it is used for facing walls, roofing, fences, construction of outbuildings;
"NS" is most often used in wall cladding and in the construction of low fences and enclosing structures;
"H" is used for building floors at home, when building fixed formwork. It can be used in the construction of a garage, barn, high fence.

The letters in the name of the material mean:

C - wall, that is, intended mainly for walls;
H - flooring, used to cover the roof, make ceilings;
CH - universal, can be used to perform any work, you need to pay attention to the shape and height of the wave.

There are other special types of profiled sheet that can be used for specific jobs. When marking, after the letter there is an index indicating the height of the profile, then the parameters of the thickness, width and length of the sheet are indicated.

The polymer coating can also be different. When choosing corrugated roofing, you need to be guided by the type of paint that can withstand various loads. It is preferable to take for roofing matte polyester, but there are other options. On this basis, the following classification was adopted:

acrylic coating - denoted by AK;
polyvinyl chloride coating - PVC;
polyester - PE;
polyvinylidene fluoride - PVDF;
polyurethane - PUR.

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What is best for a roof?

So what kind of corrugated board is best for the roof? It is easy to answer this question if there is a complete package. project documentation, where experts not only calculated the quantity, but also the type of material, the load that it must withstand. And if you need to buy the material yourself? If you buy domestic material, then you need to take a sheet marked "H", that is, bearing. In extreme cases, “CH” is also suitable, which is slightly thinner, but its strength and reliability have shown itself well. In any case, this corrugated board is suitable for covering the roof.

The choice should be made based on the climate zone in which the building is located. With constantly changing temperatures, high level humidity, frequent rains saturated with acid, and atmospheric fog, it is necessary to take corrugated board, which is made of steel. Galvanization in this case is applied by a galvanic method, which allows it to withstand extremely unfavorable operating conditions. But zinc alone does not provide all the necessary protection, so for roofing it is best to choose a material that has a special polymer coating. On the roof of the house, experts recommend taking a profiled sheet covered with polyester. It has good resistance to adverse conditions of use. Such material is marked "PE".

When buying corrugated board, you should not be guided by its attractive appearance, since this does not give a guarantee of quality. The seller must be asked for documentation confirming the type and characteristics of the metal sheet, the polymer paint used for coating. You also need to pay attention to the state of appearance. The corrugated board for the roof should not have cracks, chips, traces of marriage or careless transportation, roughness. The surface on both sides must be smooth and durable, free of scratches and dents. All this will further contribute to the development of corrosion.

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. The profiled sheet, which 10-15 years ago could only be used for the roof of outbuildings, garages or industrial buildings, has changed a lot and has become a presentable coating worthy of country cottages and townhouses. This evolution has taken place due to the improvement of the operational characteristics of the material, increasing the service life, improving the appearance of the 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.

Professional sheet - 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 a galvanized zinc coating is applied to the metal surface, 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 quality material you can build a durable and reliable roof that will not fail in the heaviest rain.

Video instruction

Profiled metal sheet, shortly called corrugated sheet or corrugated board, belongs to the category of building materials for universal use. With it, you can build fences, clad the facades of building structures, use it as part of sandwich panels. They also use corrugated board for arranging the roofs of private houses.

The question - which corrugated board is better for the roof - is not at all idle. The choice of material is complicated by the variety of manufactured sheet modifications. If we want to understand which material to choose, we should understand the performance of its various types and conduct a comparative analysis of technical characteristics.

Roofing from corrugated board can have quite a decent design

Features of the use of corrugated roofing

The widespread use of corrugated board as a roof covering is due to its excellent performance and low cost. The professional flooring represents the galvanized metal sheet made by method of cold rolled steel. The product has high mechanical strength, which is enhanced by stiffening ribs on its surface, which have a trapezoid or wave shape in cross section.

Profiling is carried out on machines with forming rollers, then a double-sided protective coating is applied to the surface. The applied manufacturing technology determines the high performance of an inexpensive building material. The use of corrugated board in the arrangement of the roof has the following advantages:

ease of installation;
long service life;
fire and environmental safety;
light weight;
variety of colors;
the ability to perform a coating without joints.

It is very convenient to cover the roof with long sheets of corrugated board

Corrugated board as a roofing can be used on almost any roof with an angle of inclination exceeding eight degrees. Fitted on flat roofs soft cover, as atmospheric moisture accumulates on them, which quickly starts corrosion processes in metal sheets.

The standard length of the sheet allows you to make a surface without butt joints. Another advantage is the absence of an unpleasant odor, unlike many other modern materials.

The disadvantages include strong heating of the coating by direct rays of the sun, a hot summer day and you can get burned when touched. In addition, the sound of raindrops drumming on the roof is clearly audible in residential areas.

Grades and properties of profiled sheets for roofs

The answer to the question of what material is better to cover the roof is largely determined by technical parameters specific material. The operational characteristics of profiled sheets differ in accordance with their thickness, which determines the weight per square meter of the coating, the geometric dimensions of the profile, the properties of the protective coating and its color design.

This profile is suitable for roofing the best way

Usually, the letter "H" marks products that can withstand an increased load-bearing load, "C" - used for arranging wall ceilings, universal-purpose products are marked with the letters "HC". And what brand is best for arranging the roof?

A profile with a low shelf is best used on a roof with a large slope

For laying on the roof, it is best to use profiled sheets with the index “H” and “HC”, they have geometric profile dimensions that provide high resistance to load-bearing loads, which is an important characteristic for a roof on which snowdrifts form in winter.

Probably, such a shape of the profile will make it possible to implement the planned roof design.

The classification of the profiled sheet into bearing, wall and universal is rather arbitrary. In specific operating conditions, the height and shape of the profile, as well as the thickness of the sheet, should be taken into account.

Geometric dimensions of the profiled sheet

The main geometric parameters that determine the mass of the profiled sheet and others specifications, are its width, length and thickness, as well as the shape and height of the profile. The main types of profiled metal sheet with their geometric dimensions are shown in the photo.

The geometric shape of the sheet is described by a set of numbers, the first of which shows the height of the profile, the second - the thickness of the sheet, the third - its width, the fourth - the length. For example, the alphanumeric code H is 23.0.5. 750. 11000 designates: profiled load-bearing sheet, profile height 23 mm, sheet thickness 0.5 mm, width - 750 mm, length - 11000 mm. The length, thickness, weight, width, pitch and height of the C 21 corrugated board profile are shown in the following table.

Rolling machines allow the production of profiled sheets twelve meters long. Usually they are cut into six-meter strips for ease of transportation. Manufacturers of this type of product technical documentation denote two sheet widths. This is due to the fact that the designated parameter may vary depending on the height of the profile, thus, there is the concept of the total and working width of the sheet.

The calculations take into account the so-called usable dimensions, which remain after overlapping the edges of the sheets.

Material thickness

One of the most important operational parameters of corrugated board is its thickness. It determines the cost of one square meter of coverage to the greatest extent. The duration of operation of the roof made from it directly depends on this parameter of the metal sheet.

An increase of one tenth of a millimeter extends the service life by approximately five years. In addition, the ability to carry load-bearing loads is increased. A sheet of corrugated board with a thickness of 0.7 mm can withstand two hundred and ninety-five kilograms per square meter, and eight tenths of a millimeter - already four hundred and nine kilograms per square meter.

Decking of sufficient thickness will withstand the load of snow even on flat roof

The thickness of profiled metal sheets varies from 0.3 to one millimeter. For roofing, the optimal value of this parameter is 0.5 or 0.45 mm. At first glance, it seems that such an insignificant thickness of the metal does not provide the necessary strength, but due to the presence of stiffeners, a team of installers moves along such a coating without damaging it.

Coating and color of corrugated board

Protective coating of corrugated board prevents the development of corrosion processes in it and protects the corrugated board from the aggressive effects of the external environment. There are the following types of coverage:

Good value for money galvanized. The disadvantages include strong heating by direct sunbeams. This creates problems in hot summers, so it is most advisable to use this option for arranging the roof of outbuildings, barns, garages, and so on.
Aluminum-silicon with excellent resistance to aggressive influences. Outdoor pavilions and gazebos covered with such material serve for a very long time.
Increasing impact resistance negative temperatures And ultraviolet radiation pural. This effect is provided by polyamide components.
Polyester with a glossy and matte surface. It is resistant to color fading, low cost, but has low mechanical strength and easily chipped.
Withstands significant temperature fluctuations environment plastisol. Notch in the form of strokes and relief embossing increase the reliability of this type of coating.

Far from a complete list options corrugated board coloring

Important when choosing color scheme corrugated board. In addition to the fact that the color should be practical and not cause much effort to maintain, harmony with the surrounding landscape and general architectural solution the buildings. You should not use green if the house is located in a dense garden. Coloring is carried out according to the standards designated by Latin letters RAL, HTS and RR. The most convenient German RAL color marking system.

In the described scheme, the primary colors are indicated by the first digit of the individual code. For example, about thirty options yellow color correspond to one, thirteen variants of orange - two, twenty-five red - three. There are about ten basic colors, and they form a palette that exceeds a thousand shades. Such a wealth of color options allows you to realize any design ideas.

Roof slope and material consumption

Profiled metal sheet is used only for pitched roofs. It is impractical to use them on flat roofs, since water accumulations form there, which will lead to a quick start of corrosion processes, first at the attachment points, and then, literally, everywhere.

When longitudinally placing several sheets on the roof, and not one whole, it is important to take into account the slope of the roof slope. The consumption of material depends on the angle of the roof, since depending on this parameter, the degree of overlap of the sheets of corrugated board changes to form a reliable surface. It should provide unhindered rolling of rainwater and melted snow.

When installing the roof, unsuitable trimmings of corrugated board will inevitably appear.

With a decrease in the angle of inclination, it is necessary to increase the amount of overlap of sheets in the horizontal direction. This leads to a decrease in the usable area. The same can be said about the overlap in the vertical direction: the smaller the slope, the more waves overlap with each other.

A roof slope of less than ten degrees requires an overlap of about 0.3 meters and additional sealing of the joints. Up to fifteen degrees - 0.2 meters, up to thirty - 0.17 meters, above this value, the overlap can be from 100 to 150 mm. The specific degree of overlap should be taken into account when calculating the amount of material required to complete the job.

Profiled sandwich panels

Sandwich panels got their name from the English name for a multilayer sandwich. In accordance with this, they are a structure made of a metal profiled sheet and a heater connected to it.

The combination of a tough, durable outer layer and high-quality insulation improves the performance of the material and its area of use. Sandwich panels are often used in prefabricated modular building structures as wall panels.

Examples of sandwich panels using corrugated board

They can significantly reduce the thickness of the walls and, accordingly, reduce the load on the base of the building. In addition, installation is simplified, and the construction time of the building as a whole is reduced. They are also used for furnishing warm roof. Sandwich panels made of profiled sheet have the following advantages:

ease of transportation and installation;
resistance to moisture;
excellent decorative properties;
heat-saving and soundproofing qualities;
fire safety;
long period of operation.

Sandwich panels designed for roofing are equipped with special locking joints. They prevent the penetration of water into the structure and allow you to successfully withstand wind and snow influences. There are two-layer and three-layer sandwich panels. Two-layer - used for arranging the premises in which it will be performed decorative trim surfaces. Three-layer - do not require finishing of the roofing from the inside.

The following practical recommendations will help you choose the right profiled metal sheet for specific purposes. You should not make the main criterion for choosing a product its cost, so you can buy simply unsuitable material.

It is necessary to determine the scope and features of the operation of the metal profile and, based on this, choose the desired modification. For example, the use of a carrier profile for arranging a fence cannot be justified from any point of view.

On the roof of corrugated board, snow retainers are very relevant

Choosing the type of coverage, you should not be guided by the simple desire to have a roof or a fence of a certain color. You need to understand that, in addition to decorative qualities, the coating has a functional purpose: it comes in different thicknesses, differs in application technology, and so on. It is necessary to understand these nuances. Both matte and glossy types of coating are popular, the former being considered more reliable.

Particular attention should be paid to the thickness of the metal sheet, because its cost and service life directly depend on this characteristic.

Another one practical recommendation is that you should not use the services of online stores to purchase a metal profiled sheet. It is impossible to assess the quality of the products offered by the photos published on their websites. It is much better to place an order at the office of a reputable company, after making sure of the quality of the goods.