The best roof decking. What thickness of corrugated board is better to choose

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 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 roof construction. residential buildings, outbuildings, 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:

1. 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.
2. 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, at least 275 grams of zinc is applied per 1 square meter of steel sheet, and in business - only 126-200 grams. The thicker the zinc layer, the longer the service life and the price of such a material.
3. 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, UV 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 must pay attention to appearance 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

Understanding why corrugated board is better than other building materials is only the first step in studying 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 roofing material in private construction for:

• country houses, 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 can be made of cheaper or practical material. 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 of corrugated board with wave sizes 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 having 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 finish coat 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 sheet 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 appearance differs. 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 know that with heavy 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 has no effect on technical specifications 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 cover the last wave very accurately. 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 special device- 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 the color scheme, the seller will most likely show you a selection of samples round shape. 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 by applying a little effort: with a slight bending, the corrugated 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 light, protective film on a 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.

Modern corrugated board is a universal building material that is in rather high demand. It is also used as a base for overlapping and strengthening building structures as roofing, wall cladding and for many other applications. A metal sheet bent into corrugation looks neat, has a simple and reliable profile, can be painted in almost any color and is brilliantly easy to install.

And, if you paid attention to this particular material, you need to choose the type that is suitable for the desired task. And for this it is important to know what sizes of corrugated sheets are needed, to what extent they are strong and with what height of the profile. And, depending on these three important parameters, corrugated board is divided into specific types and types, which we will now tell you about.

The largest range of technical metal sheets today is presented in the form of profiled and flat sheets.

We can say that this is one of the best materials for low-rise construction, which is great for roofing, as well as for building fences, creating ceilings and wall cladding:

As a basis for a modern profiled sheet, thin-sheet rolled products with an aluminum or zinc coating are used, and the manufacturing process takes place according to two different technologies - TU 14-11-247-88 (ac) and TU 14-11-236-88.

Advantages of corrugated board over other materials

Profiled floorings (profiled sheets, profiled sheets) are sheet corrugated profiles with corrugations repeating along the width of the sheet various shapes. They are produced by cold bending of thin cold rolled sheet.

Such a coating is not without reason called multifunctional. building material. Everything is in stock different types, which differ in terms of application, profile shape and metal thickness. The thickness of the metal in the profiled sheet varies from 0.35 to 0.9 mm, and the width - from 600 mm to 1150. In the factory, the height of the waves is made from 20 to 130 mm, as indicated by the special marking on the package. The length of the sheet is often the one preferred by a particular manufacturer or specially ordered by the buyer.

Such a roof is valued for such qualities:

• Ease. The weight of a square meter of corrugated board is from 3.9 kg to 24.1 kg. Thanks to this, it is possible to significantly reduce the volume of supporting structures, and there is no need for a serious support.
• Anti-corrosion protection and ability decorative coating. The best products from leading manufacturers have a service life of 45 years.
• The possibility of repeated use, which cannot be said about a soft roof.
• Large selection of fasteners and their colors.
• Compliance machining. The corrugated board is cut and drilled with conventional construction tools.

By the way, corrugated board is often compared with metal tiles as a material similar in manufacturing and operation process. The same base, the same cold press, only the look is different. In fact, there is a huge difference between them! It's all about the so-called "dead zones" of the metal, because of which it is difficult to cut. For example, if you do not pre-order the cutting of the coating in the factory for a specific project, then you cannot avoid a large overrun. In addition, it is quite difficult to join individual pieces of metal tiles together in order to achieve an even and tight seam, but with corrugated board everything is much simpler.

And, finally, such a roofing has a beautiful mechanical strength and flexural stiffness along the corrugations. And this is not an empty phrase: such technological qualities make it possible to build safe and durable structures. Therefore, let's summarize and name the three main qualities of corrugated board: durability, fire safety and environmental friendliness.

And the townsfolk appreciate this material for private construction for the price, economy, simplicity and ease of installation. Let's see through the eyes of a practice: the sheets are light, comfortable, cut with ordinary metal scissors, they are easy to store and transport. Anyone can handle the installation of corrugated board House master, just read the useful tips on our website. In addition, in the process of repairing corrugated boarding, it is easy to replace its individual fragments and even use old ones - reuse for a new roof.

Here is an educational video on the subject:

Additional coating and corrosion protection

Modern corrugated board is produced by cold rolling from high-quality galvanized steel. Zinc is needed here, because it protects well from exposure external environment, but additionally it needs to be protected with polymer coatings. Modern coatings provide not only an attractive appearance, but also significantly improve its mechanical performance, protect against atmospheric influences and give durability.

Basically, this is either galvanization, which remarkably protects against corrosion, or aluminum-galvanization, when the sheet is coated with a mixture of zinc and aluminum. This is a more economical coating option, but also less durable. The matter is that cheap aluminum reduces protective properties of a professional flooring. That is why such sheets are additionally covered with another decorative layer, for example, polyester.

And the most budgetary corrugated board, which is often found on the domestic market, is produced without a color coating at all. Not only does it look unpresentable, but the quality of the material is low. But to create an overlap for large areas aesthetics is not needed, but low cost is a priority. Slightly different from this option is galvanizing with the addition of silicon, but still better.

Produce corrugated board with a special polymer coating. Indeed, without a coating, a galvanized sheet wears out quickly, and it constantly needs to be cleaned of dirt and rust. Therefore, for a roof, this is not an option, and it is better to give preference to profiles with an outer layer of pural and similar coatings.

The color of the coating itself is important not only as an aesthetic aspect, but also for designers. For example, an industrial building must be maintained in the selected corporate style. And the color polymer coating also has the following types:

• Glossy polyester which looks great and protects well from corrosion. It is often used for corrugated board exterior finish walls and facade. Polyester is enough to resist the occurrence of corrosion and not necessarily to be resistant to mechanical damage, of which there is little. Therefore, such professional sheets are often ordered for industrial buildings which usually have more than one floor. But if you choose corrugated board for finishing your own home, think about the fact that branches and other debris will be carried by the wind, and therefore scratches are more likely here and it is not worth saving.
• Pural– more expensive coverage. It is made on the basis of polyurethane and polyamide. Provides high reliability and excellent UV resistance and low temperatures. For roofing corrugated board it is better not to find.
• Plastisol- the most durable of all types of coating, 200 microns thick. It is based on polyvinyl chloride, and in the factory, relief embossing with a notch is applied to such a coating, for especially difficult climatic conditions.

Less common on corrugated board is a coating such as acrylic, PVC and PVDF, which also have their own advantages:

If we are talking about roofing, the thickness of the zinc coating and the method of its application are of decisive importance. If this is not enough, any scratches on the roof will lead to rapid corrosion. The type of rental is also important, which affects the durability of the future roof:

Rigidity requirements and corrugation shape

Modern corrugated board is sold with different sizes sheet and profiling form. It is not difficult to choose a corrugated board specifically for the roof, adopt a simple principle: the higher the corrugation, the stronger the roofing will be.

But, if you approach the matter with all responsibility, first calculate the loads of the future roof and only then see how the chosen metal thickness and profiling height correspond to such parameters.

So, today corrugated board is produced with this form of corrugation:

1. Wavy, which has cross section in the form of a sinusoid. The wavy form is the earliest, it appeared at the end of the 19th century. Such a corrugated roof has a particularly aesthetic appearance, which is so appreciated by designers. The waves themselves are sinusoids or more complex conjugated circles.
2. Trapezoidal, which provides the corrugated board with maximum rigidity and load-bearing capacity. This form of metal rolled sheet appeared in the 20s of the 20th century. The profile in the form of a trapezoid turned out to be more durable in practice, with a high bearing capacity and ease of installation. And until today it is the most popular form of corrugated board, which is produced with a corrugation height from 2 to 208 mm.
3. Cassette, with a section and a corrugation shape in the form of the letter "P", which is great for strengthening wall structures. Profiled sheets with this form appeared relatively recently and are intended specifically for use in wall structures.

See how visually these views differ:

The height of the corrugated board profile is also different: it is 12, 14, 18, 20, 30, 35 and even 65 mm. On the packaging of the corrugated board itself, the height of its profile is indicated. The main requirement for this parameter is that the sheets are rigid and high enough. And the higher the profile, the harder the corrugated board itself will be, which is the secret. But the low profile, up to 12 mm, is more often used already for outbuildings.

You will be interested to know that corrugated board has a certain relationship between the dimensions of the sheet, profile and corrugation height. For example, sheets with a height of 30-55 mm have a thickness of 0.25 to 0.5 mm, and sheets with a height of 12-20 mm have a thickness of 0.5 mm.

And, finally, corrugated board is also distinguished by the presence of grooves. For example, when you overlap sheets, and they have a capillary groove, it should be under the sheet - this is an additional element that will help remove moisture from the roof.

Types of corrugated board: wall, load-bearing or roofing

Modern corrugated board is in demand in construction and architecture, and is especially appreciated in prefabricated technologies. It is used not only for arranging roofs, but also for finishing walls, facades and much more, and such a profiled sheet is thinner than it is necessary specifically for roofing.

That is why it is so important to understand its types:

If we consider in more detail the scope of use of corrugated board, it is made for such areas:

1. Wall decking used for wall cladding and cladding of various fences. Usually the profiling height is not more than 20 mm.
2. Roof decking designed to cover the roof, from simple to complex shapes. The standard height of the corrugation is 20-45 millimeters.
3. Bearing corrugated board with a height of 45-160 mm is produced specifically for creating ceilings for warehouse and industrial facilities.

So that buyers do not get confused, wall corrugated board is denoted by the letter “C”, roofing “CH” or a separate abbreviation bearing “H”, and there is also a separate type of corrugated board with a trapezoidal shape, which is indicated by the letter “T”.

The number that will stand next to the main letter means the height of the profile, although some manufacturers can additionally also indicate the thickness of the metal, the type of coating and their trademark:

Let's look at each type separately.

Wall decking: lightness and rigidity

Today, the letter "C" marks all profiles with a wavy and trapezoidal shape with a height of 8 to 44 mm. Such profiles are used for wall fencing, sandwich panels, partitions and fences. Main function C-profile - protective and decorative.

C8– wall decorative corrugated board. It has a profile height of 8 mm, which is considered the most suitable relief of the cladding, and all thanks to the short repeat period. And the rigidity of the sheet is achieved not by the shape of the profile, but by the small bending radius of the sheet and the increased slope of the side shelves. European counterparts - T6 and T8.

C10 already included in the list of profiled sheets, which are included in GOST 24045-94. For the manufacture of this type, not standard blanks with a width of 1000 and 1100 mm are used, but unusual ones, with a parameter of 1250 mm. Thanks to this, sheets are obtained with a thickness of 0.35 to 0.8 mm. It is C10 that is more often used for arranging fences that imitate the texture of wood and other ideas. contemporary designers. Also C10- the main material for sandwich panels.

C13– thin sheet galvanized steel for the roof and walls. This corrugated board is actively used in fencing, cladding, prefabricated panels and structures. Moreover, the fence, due to increased rigidity, can already be built above 2.5 m. The working mounting width of such sheets is 1100 mm. And in this case, color polymer coloring on both sides is already allowed. European counterparts - C15, T14 and RAN-15.

C17- a more durable profiled sheet for the fence and roof, which is additionally used for the internal and external cladding of metal buildings and fencing areas from fire and lightning. This profiled sheet also differs from the previous options in the presence of a groove for water drainage, which accidentally seeps into the junction of adjacent sheets. Mounting width C17- 1090 mm. European analogues of profiled sheets C17, 18 and 20 – T18 and T20, RAN-20, MP20.

Such a roofing looks great on slopes of a simple shape, but has some limitations: minimum angle the slope should be 14 degrees, with the exception of some types of corrugated board, where both 8 and 9 degrees are acceptable. And also there is a special corrugated board for almost flat roofs with a slope of 3-4 degrees.

C18- more or less high-quality corrugated board with small ribs. They eliminate the main drawback that metal roofing usually suffers from - the flapping of a flat sheet with every gust of wind. For the sake of this, this type of metal profile was endowed with excellent adhesion and tight sealing of narrow corrugations. There is also a groove for drainage of moisture. Mounting width - 1150 mm. Analog - Finnish profile RAN-19R and Orion.

Another view C18 - C18(wave). As you may have guessed, this profile has a wavy shape. This gives it a large bending radius and, at the same time, too little rigidity. Because of this, the maximum installation area does not exceed 1100 mm. Analogues: B18-1000, A18-1000, MP 18 and RAN-18R.

C20- a slightly stronger version than the previous one. Analogues: T20 and RAN-20.

C21- this is a wall profile that complies with GOST 24045-94. It has a regular, honeycomb-like trapezoidal structure. It gives the product versatility in use and quality in fit. Mounting width - up to 1000 mm.

HC35- this is one of the most popular metal profiles for walls, fences and roofs of outbuildings. The stiffeners here have a depth of 7 mm. Due to this, such a profiled sheet is suitable for arranging fixed formwork and covering with a crate up to 1.5 m.

HC44 and for coatings, and for walls, and for fences. It is made from a sheet with a width of 1400 mm and strength that corresponds to a profiled sheet. H114 with a width of 750 mm. Such a coating is laid at a crate step of up to 2.5 m.

Another option - NS44 TU, as an imitating analogue NS44-1000, where for external similarity there are also stiffeners on wide and narrow shelves. But here the workpiece is smaller in width, due to which the profile periods are reduced from five to four, the angle of inclination at the side shelves is also reduced, and the dimensions are for wide and narrow ones.

C44 manufactured in accordance with GOST 24045-94. There are no additional stiffeners here, and the relief lines look neat and simple. The mounting width is 1000 mm, and such a profiled sheet is used for walls, roofing and wall cladding. You can lay such sheets on the crate in increments of 2 m.

Load-bearing wall profile: boundary values

A separate type of corrugated board - marked "NS". To some extent, it is too good for ordinary wall decoration and is rather weak in order to make floors out of them. But there are many areas where exactly these are needed: high solid fences, wall railings and even some roofs.

H750- bearing corrugated board. Due to the fact that it is included in GOST 24045-94, even inexperienced designers successfully use it. The only downside of this type - in the absence of the rolled blank 1100 mm necessary for it.

H900- a more durable sheet metal profile, which factories today produce according to their specifications. It is allowed to lay it on a crate step, which does not exceed 3 meters.

Bearing corrugated board: strength and thickness

For the construction of interfloor ceilings, profiled sheets with corrugations with a height of 57 mm or more are used. If the spans are more than 3 meters, then choose a corrugation from 57 to 75 mm, if more - then from 75 mm and a corrugated board thickness of 0.7-0.8 mm. Such corrugated board is produced with additional stiffeners for a higher bearing capacity.

Bearing corrugated board is used for intermediate floors, reinforcing fixed formwork, supporting structure and, of course, roofs. In addition, such sheets are also used as an element of the supporting structure of the frame of a house or building:

H60- bent sheet corrugated board for load-bearing structures under soft roof, fixed formwork and metal roofing. As a basis, a galvanized sheet with a width of 1250 mm is taken, in which the rolled grade is not lower than 220. It is also installed on supports no wider than 3 m. GOST - 24045-94. Its analogue, made from a structural blank, is today used as a replacement for the H57-750, which is considered less reliable.

H75- the most popular corrugated board, which is actively used in steel structure for all climatic zones. It can even be laid on a crate, which is installed in increments of up to 4.5 m! And they make H75 from rolled steel grade 220-350 according to GOST 52246-2004.

H114- metal profile, which is used as a ceiling. With a width of 600 mm, H114 has the highest load-bearing capacity of any steel deck. It is made of steel with a thickness of 0.7-1.0 m and a width of 1250 mm. Also suitable for fixed formwork.

Its subspecies H114 750 with a workpiece width of 1400 mm, it significantly limits the possibilities of using such a corrugated board and increases the width of the overlap with one sheet, much more than H114-600. More at H114- the highest trapezoidal corrugation, the parameters of which are determined by the GOST 24045-94 standard. Due to this, such sheets are already laid with a support step of up to 6 m. H114 - RAN-113.

H153- this is a bearing profiled sheet of European quality, otherwise called "Europrofile". For him, the permissible step of the crate is up to 9 meters! That is why it is used both for roofing and for arranging interfloor floors, and when you need maximum load bearing capacity, but without a serious increase in the weight of the entire structure. Analogues: T150.1 and RAN-153 which is only available in white.

H158- the highest and most durable europrofile, which is produced in Russia. It is produced according to European standards. Analogue for H158 750 - T.160.1.

By the way, the bearing corrugated board has two subspecies: bearing and self-supporting. The carrier is needed in the construction of pools and in other private construction, and the self-supporting one is used at large industrial facilities.

In custody

Let's summarize: modern corrugated board is produced in different thicknesses, coatings and sheet widths. And for each of its tasks, its type and type is suitable. It is only important to purchase the product really with the parameters that were declared, and this is not always the case.

"Handicraft" corrugated board in practice may be thinner than necessary, and less protected from corrosion. Needless to say, what problems will this turn into in the future? Especially when it comes to covering.

The accuracy of the profile geometry, and the reliability of the joining of the previous sheet assembly, and the future strength of their adhesion depend on the conditions under which the corrugated board is produced, and what control takes place over its quality. Usually major manufacturers they are looking for good metal suppliers and issue a normal certificate for their products, which, by the way, you can demand from the seller.

Approach the issue of choosing corrugated board responsibly, and it will serve you for many years!

Profiled sheeting is believed to have been invented by Henry Palmer, who designed the first British railway. This engineer, in the 1920s, pointed out the advantages of lightweight containers made from special metal sheets. The novelty was appreciated by builders, and since then the profiled sheet has become widespread in the construction of walls, roofs and fences. Roof decking has established itself as a reliable and functional material that allows you to get high-quality roofing.

A proven method of arranging a roof Source neoenerg.ru

Types and specifications

Profiled sheet (profiled sheet, corrugated sheet) is a sheet of cold-rolled metal with complex profile. Among other varieties, a sheet intended for roofing can be distinguished by the presence of a capillary groove (a groove pressed along the edge of the sheet and helping to remove moisture). The marking of such material begins with the index HC, PC or R, the number after the index indicates the height of the wave. Roofing corrugated board has the following set of characteristics:

Material. The sheets are made of steel, they can only have a double-sided galvanized coating and an additional, protective and decorative one. The performance properties are affected by both the thickness of the sheet and the thickness of the zinc layer. There are expensive options made of chromium-nickel steel, aluminum or copper.

Thickness. For a low profile, a minimum thickness of 0.4 mm is allowed, for a high profile - at least 0.7 mm.

Structure. Decking is a composite (multilayer) material. At different brands the number of layers varies from 3 to 10; thickness can also be different.

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One of the differences between the roofing profiled sheet Source legkovmeste.ru

Coating type. The coating has a protective decorative function, it can be polymer or paint and have several layers. The warranty provided by the manufacturer depends on the number and thickness of the coating layers. Most often, the polymer coating (colored, matte or glossy) is acrylic, polyester, polyurethane, polyvinyl chloride.

Additional coverage. An additional film is applied to some types of profiled sheet (lamination is carried out). Additional protection from mechanical damage increases the price (sometimes by 8-10%), but is considered necessary for complex polymer coatings.

Comb type(corrugations, waves). Products are produced with a wavy or trapezoidal (European standard) profile. The profiled sheet for the roof has a wave height of 20 to 100 mm; ridge and wall can be reinforced.

Additional elements. These include components used to design roof units: end and cornice strips covering cornices, edges and joints of two slopes; a skate that protects the place of convergence of the slopes.

Varieties of corrugations Source materialyinfo.ru

On our website you can find contacts construction companies who offer a roof repair service. You can directly communicate with representatives by visiting the exhibition of houses "Low-Rise Country".

Geometric dimensions and weight

The maximum length of a profiled sheet is limited by the technological capabilities of production and is 12 m. Typically, manufacturers cut such a blank in multiples of 1 m or 0.5 m; accuracy depends on the quality of the equipment. The calculation of the required amount of material is carried out taking into account the transverse overlap of individual sheets. The size of the longitudinal overlap depends on the angle of the roof - the smaller the angle (lower the slope), the greater this parameter is set (for an angle of 15 °, the overlap is 20 cm). The width of the side overlap is half the width of the wave.

Manufacturers indicate two sheet widths - overall (standard, total) and useful (working, mounting). The overall width is the initial sheet parameter (from 1 to 1.25 m), the useful width is the one that is obtained after the formation of the wave, it is always slightly smaller and depends on the height of the wave.

It is important to understand that when selling material, calculations are made using the total width. But builders, when calculating corrugated roofing, operate (which is quite natural) with the concept of working width. To calculate the useful width, the size of the overlap (the width of one wave) is subtracted from the total.

Difference between overall and installation width Source productcenter.ru

The thickness of roofing sheets from 0.45 to 1.2 mm is regulated by GOST 24045-2010 and, despite its seeming insignificance, is quite sufficient for the construction of a strong roof. The profiling procedure gives the sheet additional strength (stiffness). Builders move along the stacked sheets without deforming them, thanks to the complex shape of the profile that redistributes the load.

The weight of a sheet is a derivative of its dimensions: length, width and thickness. The weight of corrugated roofing is also affected by the distance between the waves and the structure of the protective and decorative coating.

Advantages

The successful combination of operational characteristics does a professional flooring to one of the most applied roofing materials. Among its advantages are the following parameters:

Durability. Warranty for different kinds material can reach 20-25 years; the term depends on the thickness and type of polymer coating. In terms of service life, corrugated roofing is comparable to bituminous and metal tiles (the guarantee for slate is 15 years).

Weight of roofing materials in comparison Source risuusam.ru

Affordable cost. An excellent price / quality ratio contributes to the popularity of corrugated roofing. The material is cheaper than bituminous and metal tiles.

Strength(reliability). Thanks to the profile, the material can easily withstand significant mechanical and snow loads.

Corrosion resistance. Thanks to the layers of zinc, primer and polymers, the sheet is protected from the damaging effects of moisture.

Minor weight. The roof does not exert significant pressure on the supporting structures. It also makes transport and installation much easier.

Resistance to natural phenomena . The material is resistant to temperature extremes, solar ultraviolet and atmospheric moisture.

fire safety.

Range design solutions . Polymer coatings make it possible to produce sheets in a wide range of color palette, comparable to the palette of metal tiles and superior to other roofing materials.

Minimum care. The metal profile during operation does not need regular maintenance.

Line of colors of one of the brands of corrugated board Source 65at.cc

Disadvantages of a profiled sheet and ways to minimize them

Despite the solid list positive qualities, roofing corrugated board also has disadvantages that are revealed during operation. Understanding the weaknesses of the material makes it possible to reduce their influence at the stage of roof installation. The disadvantages of a profiled sheet include its following features:

Low sound insulation. The slight thickness of the metal sheet leads to the appearance of a drum effect - an increase in sound during rain. Someone likes to fall asleep to the sound of falling drops, while someone slowly begins to get annoyed by the monotonous fraction. In order not to experience discomfort during each, even a little rain (and in some regions there are a lot of them), they use a proven method - strengthening the roofing pie with an additional layer of sound insulation. The role of the insulating layer is most often performed by mineral wool with a parallel effect of warming.

Video description

How to choose the right corrugated board in the following video:

Loss of corrosion resistance. If the protective layer of the profiled sheet was damaged during transportation or installation, the corrosion process will most likely begin. They try to stop it by staining the damaged area, which is not always effective and almost always unaesthetic. To prevent the occurrence of corrosion, it is worth buying material from well-known manufacturers. Their products are protected from accidental damage by individual packaging and get to the construction site without scratches and chips. No less important in the fight against corrosion is the correct installation (according to the instructions). The result of the advice of some sites about ease self-assembly there are numerous foci of corrosion in places of unprofessional fastening.

Roof leakage. This, rather, is not a feature of the material, but the low professionalism of roofers. In order for the roof to be moisture resistant, a set of measures is needed: a sufficient size of the overlap of the joints, high-quality sealant treatment of the seams and fastening points on self-tapping screws.

Overheating attic space. A high-quality roofing cake with a sufficient layer of thermal insulation saves from it.

Proper installation is the key to the tightness of the roof Source goldkryshi.ru

Factors affecting the cost of corrugated board

The cost of a profiled roofing material consists of three components: the thickness of the metal, the type of protective coating and the shape of the profile.

1. Thickness

A company producing corrugated board buys raw materials - rolled steel with a polymer coating. The metal from which the profile is rolled can be of Russian, Finnish, English, Chinese production. Raw materials can be of different thickness, with different zinc content and coated various types. The country of origin, of course, affects the cost of the roll, but the determining component of the price is the technical parameters, the main of which is the thickness.

Rolled raw materials are bought by weight. From this it follows that from two rolls with the same weight, but with different thicknesses of rolled products, it is possible to stamp a different number of profiled sheets. The thinner the rolled product, the longer the roll and the more finished products at the exit; therefore, the price of corrugated roofing depends mainly on the thickness (the difference in price between sheets of the same type with a thickness of 0.7 and 0.4 mm reaches 50%).

Video description

About the intricacies of choosing corrugated board in the following video:

2. Protective coating

The roofing profiled sheet is divided into several price categories depending on the type of anti-corrosion protection:

Galvanized corrugated board. The most budgetary and therefore popular option. For the roof, they try to choose a galvanized metal profile of maximum thickness and with a high zinc content. But it is not recommended for installing the roof of a residential building, since the material without a protective layer does not tolerate temperature and humidity changes; this affects the service life in a bad way.

Paintwork. Thin layer varnish and paint serves reliable protection from corrosion; if necessary, it is easy to update.

Plastisol. A common polymer coating resistant to mechanical, chemical and natural factors. Plastisol does not like sudden temperature changes and direct sunlight, from which it begins to fade.

Polyester. The most budgetary corrugated board is covered with polyester; the difference in price with similar sheets (of equal thickness and profile, but with a different protective layer) is 30%. Polyester coating is quite reliable and durable; a sheet with a matte finish looks especially advantageous.

Sheets with a polymer coating (glossy and matte) Source krovly.by

Pural coating(Pural and Pural Matt). It is a more durable coating suitable for use in areas close to highways. It easily withstands temperature changes, exposure to moisture and ultraviolet radiation.

PVDF coating(Polydifluorionad, PVDF). One of the best options for roofing sheeting. The coating reliably protects against all weather surprises of the Russian climate, as well as from scratches and chips; it can be used near highways and industrial sites. PVDF coated sheets boast one of the most interesting color schemes(with metallic shades).

3. Profile shape

The profile shape also affects pricing. The higher the profile height, the smaller the width of the finished sheet will be and the more such sheets will be required for your roof. On the other hand, with an increase in the height and thickness of the corrugations (stiffening ribs), the strength of the material increases, and, therefore, the ability of the finished structure to withstand the load.

Video description

About what affects the price of corrugated board in the following video:

Roof installation is used not only roof profile: often use certain brands of wall (C20, C35) or carrier (H60, H75); the final choice depends on the needs of the customer.

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The cost of corrugated board

The choice of roofing corrugated board only for the price can lead to a sad result - the sheet will not be suitable for your specific conditions (for example, for an area with snowy winters). Before buying, it is worth studying the offers of different manufacturers and the characteristics of the products offered; The advice of a specialist will also be useful. If you choose the right profiled sheet parameters, after installation you can forget about the roof for several decades.

Wall profile is often used for roofing Source gros-stroi.ru

Many manufacturers, in order to facilitate the choice, develop the so-called price matrix - detailed tables indicating the brand of material and the main technical characteristics (thickness, profile height, type of coating). Many resources also offer the calculation of corrugated roofing (as on online calculator, and with a visit to the object). The price for some types of profiled sheet (with an average overall and useful width) in Moscow and the region is as follows:

profiled sheet C8(polyester, profile height 8 mm): from 185-190 rub./m 2.

Sheet C20(polyester, profile 20 mm): from 190-195 RUB/m 2 .

Sheet MP18(zinc, profile 18 mm): from 207 rub./m 2.

Sheet C21(polyester, profile 21 mm): from 212 rub./m 2.

Sheet C44(zinc, profile 44 mm): from 269 rub./m 2.

• C8 Norman MP: from 345 rub./m 2.

C21 Grand Line Optima Satin 0.5 mm (brown-red): from 450 rub./m 2.

C21 Grand Line Optima Zn 0.7 mm (galvanized): from 499 rub./m 2.

C21 Grand Line Optima Pe 0.7mm (Graphite Grey): from 602 rub./m 2.

Good alternative slate coating Source plougonver.com

Conclusion

The use of corrugated board makes it possible to short term equip the roof country house. Knowledge of the features and basic parameters of the material allows you to make an informed choice, the result of which will be beautiful roof with high performance.