Professional sheet - general characteristics, advantages and disadvantages, areas of application. Decking

Decking (wall, roofing, load-bearing) is one of the most common and objectively in demand modern materials in construction.

Specifications, properties and geometric dimensions of corrugated board, a variety of types, types and colors make the profile sheet a worthy alternative to other materials.

What is corrugated board?

Decking is a profiled sheet of metal with a wide range of applications in the construction industry (for fences and fences, for wall cladding and roofing, for the installation of monolithic reinforced concrete floors on corrugated board). Among users, it is known as corrugated sheet or profiled sheet. It is manufactured in the factory by rolling sheet steel.

The steel core gives rigidity to the profiled sheet, the coating - an aesthetic appearance and resistance to external influences, profiling - additional rigidity without weighting.

A private type of corrugated board is a metal tile. The only difference between these materials lies in the specifics of the arrangement of the shafts on the rolling mill, which makes it possible to form a configuration similar to natural tiles. However, the installation of corrugated board and the installation of metal tiles are carried out using different technologies.

Decking - GOST (regulatory base)

The fact that profiled flooring for the domestic market is new, but demonstrating the rapid development of the material, is evidenced by the adoption in 2012 of regulatory conditions for its manufacture. Today, manufacturers who are responsible for the quality of corrugated board with a reputation rely on the provisions of GOST 24045-2010 “Bent steel sheet profiles with trapezoidal corrugations for construction”.

Other standards include:

Producers of corrugated board

Note that the production of corrugated board is a rather expensive project, since high-quality equipment is expensive. But not enough to serve as a significant barrier to handicraft production.

There are world-famous manufacturers on the domestic market: Ruukki (Finland), Pruszynski (Poland) - one of the first suppliers of profiled sheets. You should know that the production of corrugated board under the Pruszynski brand is organized at subsidiaries of the structures, and not by franchise, so the quality of the products meets international standards. The price of corrugated board too.

Among those who have established the production of corrugated board in Russia and have established themselves as a reliable supplier, there are several companies whose activities are not limited to individual regions. However, due to the peculiarities of transportation, there are large manufacturers of corrugated board in each region.

For example, where you can buy corrugated board from the manufacturer:

• in Moscow: ProfStalProkat LLC, Steel-Plass plant, MMK Profil-Moscow, Stalkomprofil LLC;

• in Samara: "KSP" (plant of roofing and wall profiles), the company SPC "Krovlya", the plant "Electroshield", the plant "Mayak";

• in Yekaterinburg: MetallProfil Ural LLC, PGSoyuzProfil LLC, Ural Plant of Roofing Materials LLC.

At the same time, we note that in each region there are relatively few large suppliers, mainly companies offering popular types of corrugated board work: wall and roofing (low-wave). However, it is impossible to judge the quality of a product by the size of the manufacturer. The choice of corrugated board is more complicated and is carried out according to a number of factors.

The main characteristics and properties of corrugated board are the metal structure, types, types and varieties of profiled sheet, metal thickness, length, width, sheet thickness, type of coating.

Decking is a composite building material, heterogeneous, but solid. It is in the presence of layers, with a clear boundary between them, that the peculiarity of the metal used for the manufacture of corrugated board lies. It is impossible to separate the layers, but thanks to them, a synergy effect is achieved.

The composition of the metal differs for different manufacturers in the number of layers - from 3 to 10 and the thickness of each layer.

Regardless of how many protective layers the corrugated board has, the obligatory components are: a steel sheet and a double-sided layer of galvanized coating. This is the most minimalistic option. The greater the number of layers and their thickness, the greater the guarantee for corrugated board is provided by the manufacturer. This is due to the fact that each layer performs its function. The layers differ not only in the thickness of the application, but also in their visual appearance and the ability to withstand the effects of the external environment.

Corrugated board coating (color and texture)

The coating determines the service life of the profiled sheet, which ranges from 5-50 years. Agree, it is worth studying what it depends on. First of all, the coverage. In terms of coverage, all corrugated board on the market can be divided into 3 groups:

Galvanized corrugated board

In this case, the steel core is coated with zinc with a coating density of 275 g/m2. (minimum thickness 90 µm). This coating thickness is standard, prescribed by the German standard DIN EN 10143. Guarantee for galvanized coating is 5 years. Estimated service life - up to 20 years.

A cheaper sheet with a smaller layer of zinc will last less. It is usually used for temporary fencing, formwork, etc. Some manufacturers do not offer warranties at all.

Note: Zinc is a volatile material. The smaller its layer, the faster it will evaporate and the steel core of the profiled sheet will be exposed. Accordingly, the faster the corrugated board will rust.

Aluminium-galvanized corrugated board

For coating, a mixture of zinc and aluminum is used. It has a 10 year warranty. Estimated service life - up to 30 years.

Compared to zinc, aluminum-zinc coating has a higher corrosion resistance (twice).

Polymer coated corrugated board

Coating warranties vary by type and range from 10 to 20 years, with a design life of more than 50 years.

The material was prepared for the site www.site

Types of polymer coating of corrugated board

During the manufacturing process, a coating is applied to the galvanized sheet. At the same time, the thickness of the zinc coating of the corrugated board, according to the standard, should invariably be 275 g/sq.m. (together on both sides).

Polyester, pural, polyurethane are the types of coating, general purpose which, zinc protection. Thickness of a polymeric covering of a professional flooring - 25-200 microns. The color of the coating is determined by the catalog of RAL and RR tables (from Ruukki).

• polyester (PE). A popular coating that provides additional corrosion resistance. As for the surface texture, it can be glossy or matte. Glossy PE is applied with a thickness of 25 microns, matte - 35 microns. The coating is designed for use in normal climatic conditions;

• Pural. Coated with a mixture of polyurethane and polyamide. Coating thickness 50 µm. It is characterized by increased resistance to ultraviolet;

• plastisol (PVC and PVC200). The basis is polyvinyl chloride (PVC). Coating thickness 200 µm. Recommended for use in difficult climatic conditions;

• polydifluorionad (PVF2). One of the components of the mixture are fluorine-containing polymers;

• composite materials. Coatings containing an additional layer different materials, providing the sheet with aesthetic and practical properties. The composition of composite materials is a trade secret of manufacturers;

• printtech. It stands out from a number of other coatings in that it is an imitation of wood, stone or brickwork. Fences made of corrugated board under stone, brick, wood look especially good.

An additional type of coating is a film (lamination). It is rolled onto the corrugated board in the process of metal profiling and reliably protects the polymer coating from mechanical damage.

Note. The film increases the price by 5-10%. Therefore, its application is often discussed with the customer and is preferred for expensive coatings, the integrity of which is difficult to restore by tinting.

Paper is used for packaging corrugated board. Thus, reducing the chance of damage during transport or storage.

In practice, the choice of corrugated board is based on the color scheme, which is quite diverse.

Types and varieties of corrugated board

There are three main types of corrugated board, which are based on the height of the wave. Each of the types has types associated with the configuration of the wave (trapezoid, cylinder, and its height), which in turn causes a significant number of varieties.

It is characterized by a finer profiling, which allows for a greater working width of the sheet. Each manufacturer has its own marking of the wall profiled sheet. However, the common is the letter marking, showing belonging to the wall, and the number - indicating the height of the profiling (corrugated wall wave height). Wall sheets include sheets with a wave height of 8, 10, 15, 20 and 21 mm.

Note. Wall corrugated board is distinguished by such quality as windage. A solid sheet is subject to wind loading, which can be reduced by choosing a sheet with a higher wave or arranging a powerful frame.

Has a higher wave. Due to this, the useful width of the sheet decreases, but its throughput increases, which is a defining characteristic for roofing materials. It is designated in the same way as the wall one, with a letter and a number. For example, PK-35 - corrugated roofing wave height 35 mm. Roofing sheets include sheets with a wave height of 20, 21, 35, 45, 57, 60, 75, 80, 90 and 100 mm.

Note. Roofing includes any corrugated board with a wave height of more than 20 mm. This value is borderline and is found in roofing and wall corrugated board. And the purpose (difference) is determined by the presence or absence of a capillary groove or when using simpler equipment in the orientation of the colored side (see figure).

This category includes sheets with a wave height of 75, 80, 90 and 100 mm. They are used in the construction of floors, incl. reinforced concrete. For reinforcement on the bearing corrugated board, stamping is used.

Note. The higher the wave height, the stiffer the profiled sheet, but the smaller its usable area.

If you walk through any settlement and carefully look around, you will be surprised how many gates, fences and roofs, made of beautiful corrugated material, turn out to be everywhere. different colors.
This material is corrugated board.

It's abbreviated.
The full name of the material is profiled steel sheet.
This material has become popular for a relatively long time and its popularity is constantly growing.
Today, corrugated board is often used as a roofing material.
And there are a lot of reasons for this.

The professional flooring is the pro-thinned-out steel sheet having a corrugation of a trapezoid form.
This material is made in a cold way on special equipment - profile bending mills.
Profiled sheets differ:

• by its size;
• for its intended purpose;
• by the presence or absence of coverage;
• by source material.

After the galvanized steel sheet is rolled through the mill and given its shape, it is coated on both sides with a polymeric anti-corrosion coating.
To do this, enterprises use different technologies and different types polymers.
Some types of corrugated board may not have a polymer coating at all.
As a rule, such material is used in the construction of fences for temporary fencing of construction sites.
But if we talk about corrugated board, which is used as a finishing roofing material, then it always has a polymer coating on both sides.
After all, such a coating is ideally adapted to changes in the weather.
It does not corrode, and does not fade under the influence of sunlight.
That is, he is not afraid of ultraviolet.

Types and characteristics

Today, several types of profiled sheets are manufactured, which are usually divided according to the purpose of the product:

• roofing corrugated board, which is used as a finishing roofing material;
• wall corrugated board, which is used for wall cladding;
• profiled bearing flooring, which is used for the operational construction of special non-residential facilities. (kiosks, warehouses, utility rooms, etc.);
• corrugated board for fences and barriers;
• corrugated board, from which formwork is made during the construction of large objects.

Manufacturers use letters of the alphabet to label their products.
Knowing what each such letter means, you can choose exactly the type of corrugated board that is required:

Advantages and disadvantages

There are a lot of undeniable advantages of corrugated board.
It is because of the large number of advantages that this material has become so popular.
And its popularity is growing!
Here are the benefits:

• The product is made of a material that is not susceptible to corrosion. So, its resistance to atmospheric phenomena is very high;
• high strength;
• high tightness;
• fire resistance;
• ease of installation. To lay the profiled sheet, the use of special equipment is not required;
• durability. The manufacturer's warranty is 50 years;
• ease of care;
• acceptable price;
• wide range of colors.

The disadvantages of corrugated board can, perhaps, include high level noise when it is exposed to precipitation.

However, the advantages of the material are disproportionately greater!

What is corrugated board made from?

The initial blank for the manufacture of a profiled sheet is sheet steel.
But the steel is not simple, but coated:

• sheet galvanized steel GOST 14918 (no designation);
• sheet metal coated with aluzinc according to TU 14-11-247-88 (denoted by AC);
• rolled sheets with aluminum-silicon or aluminum-zinc coating according to TU 14-11-236-88 (denoted A and AK);
• sheet steel rolled with zinc electrolytic coating according to TU 14-1-4695-89 (denoted by EOCP).

A polymeric protective paint and varnish coating is applied to the profiled steel sheets.
But it may not apply.
Only corrugation coated in accordance with GOST 30246 is marked.
A corrugation that does not have a coating is not marked.

Protective coatings. Main types

In total, there are 7 types of coatings that provide protection for a thin steel sheet:

1. Zinc. The most inexpensive, most running and most short-lived coating.
2. Aluzinc. This coating consists of zinc, aluminum and silicon. Silicon in it is 1.6%, and aluminum - 55%. Such material provides additional protection of the sheet material from the appearance of patina and mechanical damage.
3. polyester glossy paint. It makes it possible to paint the sheet in any desired color over the protective layer.
4. polyester matte paint. Such a coating is distinguished by increased wear resistance.
5. Plastoizol (polyvinyl chloride with the addition of special plasticizers). Such a coating is very resistant to any of the influences: chemical, temperature, mechanical. On such a coating, a wood or leather finish is possible.
6. Pural (polyurethane-polyamide paint). It is this coating that makes it possible for companies - manufacturers of corrugated board to give a guarantee of 50 years on their products. This coating has a unique resistance to a wide range of temperatures.
7. PVDF ink creates an additional protective barrier against chemical attack and UV rays.

Mounting

As a basis for corrugated board, as a rule, a crate made of processed boards is used.
Tools that you need to prepare before proceeding with the installation:

• hammer;
• screwdriver;
• roulette;
• marker;
• cord;
• long rail;
• silicone.

Separately, it should be said about cutting sheets.
To cut corrugated board, it is fashionable to use any cutting tool you have: a hacksaw for metal, metal shears or electric scissors.
They showed themselves very well in working with corrugated board Circular Saw And electric jigsaw.
The main thing is that the saws on them are installed with carbide teeth.
when mounting a grinder with an abrasive wheel is strictly prohibited!
After all, a very high temperature will occur at the place of the cut, and not only the polymer coating, but also zinc will completely burn out.
As a result, the sheet will lose its resistance to corrosion, and very soon it will have to be replaced with another one.
The scheme for mounting the profiled sheet is as follows: the sheets are laid parallel to the roof eaves.
Before laying the cornice should be perfectly aligned.
Ideally, the length of the corrugated sheet should be such that it covers the entire length of the slope.
If the length of the sheets is not enough, then they are mounted from the bottom row to the top row in the horizontal direction.
In this case, the overlap between the sheets should be large.
And if the angle of inclination of the slopes on your roof is small, then it would be best to fill the joints with a special sealant.

To ensure that the extreme shelves of the sheets fit snugly, they are connected with rivets.
For fastening corrugated sheets to the crate, special self-tapping screws are used.
Self-tapping screws are attached to the sole of the sheet through one wave.
To ensure strength in subsequent rows, the screws are screwed in a checkerboard pattern.
In those places where side overlaps are obtained, screws are screwed in in each wave.
Of course, if you wish, you can find a roofing material that will look better than corrugated board.
However, such material will cost much more than a profiled sheet.
So if you want something practical, beautiful and inexpensive, then you should pay attention to corrugated board.
Moreover, sheets of all colors of the rainbow are now being produced.
Video on how to choose the profiled flooring you need.

Sergey Novozhilov - roofing materials expert with 9 years of experience practical work in the field of engineering solutions in construction.

When a person chooses a material to cover a roof or create a fence on the site, the construction team often recommends the use of corrugated board. But what is corrugated board and why is it good? Due to its technical characteristics and price, it has become one of the most popular and sought after building materials on the market. Let's take a look at what corrugated board is, what are its pros and cons, and the scope. We will also tell you how to choose the right one and how much it costs.

What is corrugated board?

This material is a profiled metal sheet (mainly steel) that has been cold rolled and profiled. That is, ribs were artificially created on the sheet in order to impart rigidity. In construction, the importance of this material is difficult to overestimate, it can be used for many purposes. But more on that a little later.

Materials for its manufacture

For the production of the material used steel, aluminum, chromium-nickel steel, copper. According to GOST, corrugated board should have a thickness of 0.3-1.2 mm. For different purposes, materials of different thicknesses are used. In the manufacture of ribs can give different shape: oval, trapezoidal, polygonal, regular square, etc.

Also in the manufacturing process, zinc, aluminum and aluminum-zinc coatings are used (usually 100-275 grams per square meter of layer), which gives anti-corrosion properties to the material. And to increase strength and wear resistance, different polymers such as polyvinyl chloride, polyester, acrylic, polyurethane, etc. are used. Thanks to these polymers, it is possible to preserve the paint layer and protect the color from fading.

Kinds

The scope of the material determines its type. For example, corrugated board for walls is used for cladding the walls of buildings and creating a fence. It is marked with the letter "C". The popular one can be used for the roofing of industrial and civil buildings with a lathing step of 0.4 m. In residential construction, this brand is used very widely. C20 professional flooring has a long service life. It retains its aesthetic properties for 10-15 years. At the same time, it has quite good physical properties. In particular, it perfectly withstands wind loads, which is why it is often used as a building envelope.

The second type is universal. This is HC35 corrugated board, which is intended for the construction of walls and fences. Although most often it is used to create because of the beautiful performance characteristics, this material is perfect for the construction of fences. It can have a polymer or galvanized coating, which effectively protects it from any adverse weather conditions. HC35 can vary from 0.5 to 0.8 mm, which provides light weight. At the same time, it is easily cut, which simplifies the process of installation and dismantling. Well, the aesthetic properties are on top: it can be given any color. Partly because of this, it is often used for roofing.

H75 corrugated sheet can have a thickness of 0.4 mm to 1 mm, and it is also produced by cold rolling. Like the previous types, this one is also used to create fences or frame structures, as well as for wall cladding. The possibility of galvanizing or applying a polymer layer on H75 corrugated board is included. By the way, it is H-profiles that are load-bearing, so it is appropriate to use them to create roofs and fences. They are more rigid and able to withstand heavy loads. Most often, the H-153 profile is used for roofing and walls.

It is assumed that grade "C" is intended for the creation of fences and walls. Grade "H" is better suited for the manufacture of canopies and canopies, and the universal brand "NS" - for roofing and fences.

It is difficult to determine which corrugated board is better, because it must be selected for certain tasks. But we can definitely say that a profile with a large cross section is more durable. Such, for example, is better suited for the installation of enclosing structures.

Material advantages

One of the first advantages of the material is its low weight and ease of installation. If you compare it with natural tiles or, for example, with slate, you can even highlight its "non-fragility", so even after falling from a great height nothing will happen to it.

Installing a corrugated fence does not require a foundation, which is just fine when compared to brick fences or stone walls. From a design point of view, the material is good, as it is available in many color variations. What a house fence made of corrugated board looks like can be seen in the photo below.

The next advantage is protection against corrosion (due to the coating), mechanical damage, ultraviolet radiation, and temperature changes. The service life of the material is 50 years. Although after that it will also serve, because it is metal.

Not to mention the cost. The price of corrugated board per m2 distinguishes it from other roofing materials. Perhaps only a chain-link mesh will cost less when constructing a fence. However, we will talk about the price of corrugated board per m2 a little later.

Minuses

One of the big minuses is the so-called drum effect. During rain, the noise level can reach 95 dB (this is with a heavy downpour), therefore, without fail, the installation of corrugated board involves the use of soundproof materials (stone or glass wool).

The second disadvantage is that a scratch on the anti-corrosion layer can lead to rapid rusting. Therefore, if a deep scratch is found, it should be immediately painted over.

Roofing corrugated sheet with a sheet thickness of up to 0.55 mm is easily deformed. This is the last disadvantage of corrugated board. GOST at the same time corresponds. Therefore, it should be handled carefully during installation. It happens that the workers from the brigade simply bend the rib, but then straighten it out. But the dent is still visible in the end. And it's not unusual, it's just specifications corrugated boards are.

Despite all these shortcomings, profiled sheet is still one of the most popular building materials in the field of fencing and roofing.

Price

It is difficult to answer exactly how much a corrugated fence costs. Depending on the thickness of the corrugated board you will use, the price may be different. For example, if you want to use a material 2 meters high and 0.4 mm thick, then the price of such a profile will be 180 rubles per linear meter. In this case, we are talking about inexpensive polymer profiled C8. The same galvanized profile will cost 155 rubles per linear meter.

Usually sellers indicate 2 prices, including the cost square meter. The price per square meter of C8 polymer corrugated board with a thickness of 0.4 mm is 155 rubles, galvanized - 130 rubles.

But there is also more expensive material. C21 corrugated board is more expensive: its price is an average of 175 rubles per square meter. The same galvanized material is slightly cheaper than polymer - 130 rubles.

The indicated prices were taken from Moscow sellers. They can vary greatly depending on the region and the seller himself, therefore they are not final. You may find cheaper material, but be aware that approximately its price per square meter is 130-180 rubles.

Installation cost

The price for the material itself is small, its installation will be more expensive. The prices below are average for Russia, and they may vary depending on the region, the professionalism of the team, etc.

For installing one running meter fence brigade takes 500 rubles. This includes marking, drilling holes for poles, cleaning and painting these poles, installing in two rows and, of course, installing the corrugated board itself. In this case, the pillars will be installed simply in the ground. This is usually sufficient to provide high strength. But the brigades also offer to concrete the poles, backfill them, or generally use screw poles. In this case, the cost per linear meter will increase. For example, the cost of installing corrugated board with concreting pillars will cost an average of 700 rubles per linear meter.

Calculation example

As you already understood, it is impossible to calculate the cost by default, because it will depend on the perimeter and type of corrugated board, as well as other details: whether there will be concreting of the pillars, whether there is a need for additional work (for example, dismantling the old fence), etc.

But let's take a simple calculation as an example.

Let's say you need to make a fence around the perimeter. You measured all sides and got the required length of 40 meters (10 meters on each side). This means that for the material itself you will have to pay 7200 rubles (180 rubles per linear meter) + poles. In total, you can count on 10 thousand rubles (only the material itself).

Now we can also calculate the cost of work: we multiply 40 by 500 (the price for installing a running meter) and we get 20 thousand rubles. We add 10 thousand for the material and get 30 thousand rubles. This is how you can approximately calculate how much a corrugated fence costs, but the team will tell you the final price.

Roofing is a little different.

roofing cost

The price for the material will be approximately the same: about 160-200 rubles per square meter. The cheapest galvanized corrugated board costs so much. As you can see, the cost of the material is the same. Moreover, the material itself is the same, it can be used both for the roof and for the fence device. But the final price will depend on the thickness of the sheet, the steel grade, the type of coating, the height of the rib. Also, it is additionally worth calculating the cost of a sealant, a layer for sound insulation,

The cost of installing a corrugated roof

The cost of work also differs, and there is no specific standard. It all depends on the complexity, the shape of the roof, the organization of the roofing pie. Even the roof space matters.

However, the brigades charge about the same amount for the arrangement of the roof, although you can often find extremely cheap offers, but on average, the price of laying a square meter builds 150 rubles. It is also worth considering that you will have to pay for laying additional materials, such as a sound insulation layer, etc. So it is impossible to calculate the cost yourself. It is necessary to call a team, pay for measuring the required work (some do not take money for measuring), the workers calculate and say the final amount. At the same time, they take into account all the difficulties, for example, bypassing the chimney during installation.

Conclusion

Now you have learned what corrugated board is and what is the way to count it. The figures given in the article do not claim to be the ultimate truth, however, the approximate average cost of the material and work with it is as indicated above.

Despite the fact that the history of the use of profiled sheets in the construction business goes back almost two hundred years, this has not made it any less popular and in demand material. And if at the beginning of the 19th century the production of the first profiled sheets was a laborious and economically inexpedient process, since the products were made by hand from wrought iron, then in modern conditions the profiled sheet is produced easily and quickly on rolling mills from steel sheets or steel coils.

What is a profiled sheet - its main characteristics, what properties does it have?

Profiled sheet is a sheet of metal with a corrugated surface (stiffening ribs). It is obtained by cold pressing special machines. The stiffening ribs (corrugations) are located longitudinally, which allows the profiled sheet to withstand heavy loads. At the same time, than more height profile, the harder the sheet itself. The shape of the ribs can be round, triangular, trapezoidal, the thickness of the metal is also different. For different kinds construction works choose different brands of this versatile material.

In general, the profiled sheet is widely used in individual and industrial construction for the construction of fences, roofing, load-bearing structures, formwork, for finishing facades and walls from the inside. The lightness and strength of the material helps to reduce the time of installation work.

The main characteristics of the profiled sheet:

Note . It should be borne in mind that the working width of the corrugated board, due to the features of its design, is less than the total. Therefore, in preliminary calculations, the length of one wave (profile), which goes to overlap, is always subtracted from the total width of the sheet.

What are the advantages and disadvantages of a professional sheet?

Advantages:

• Relatively low price makes the material accessible to different categories of consumers.
• Resistance to temperature extremes allows the use of profiled sheets in regions with harsh climatic conditions. The main thing is to follow the rules of its operation.
• The significant length of the sheets (up to 12 m) contributes to the implementation of the minimum number of joints when arranging the roof.
• The professional sheet, small in weight, rises to a height without the use of construction equipment.
• Even after ten years, damaged material can be easily replaced with a similar one.
• Wide choose colors coating allows you to choose any shade of profiled sheet to create a single architectural ensemble of the entire building and the surrounding area.

Disadvantages:

• The low noise insulation of the material and its ability to amplify sound create the effect of "drumroll" during rain. This drawback is easily removed if, when installing the "roofing cake", mineral wool is used as an insulating protection.
• If the protective layer of corrugated board is damaged, its corrosion resistance and, accordingly, its service life are significantly reduced.

Types of profiled sheet - which is better?

Depending on the purpose, the profiled sheet is divided into 3 groups:

• wall

Marked with the letter "C". Used for building fences internal walls, wall cladding. The height of the corrugation (profile) is minimal and is 8-35 mm, the thickness of the sheet is 4-8 mm.

• roofing

The roofing profiled sheet is indicated by the letters "NS". This material is considered universal. It is applied at arrangement of a roof, fences and for other purposes. Sheet thickness is 5-8mm, profile height is 35-44mm.

• Carrier

Marked with the letter "H". It has the largest thickness (8-10 mm) and profile height (57-114 mm). Its strength is enhanced by additional grooves. The material is quite expensive for the roof, it is used in more critical areas. For example, as load-bearing structures and intermediate floors in the construction of hangars. The service life of products is 40-60 years.

For information . When choosing a profiled sheet, you can easily find out the characteristics of the material by marking:

• The first digit after the letter C, H or HC indicates the height of the corrugation.
• The second number is the sheet thickness.
• The third and fourth, respectively, the width and possible length of the sheet in mm.

Example. Marking C10-0.5-750-12000 means a wall profiled sheet with a profile height of 10 mm, a sheet thickness of 0.5 mm, a sheet width of 750 mm, and a maximum length of 12,000 mm.

Profiled sheet brands:

Profiled sheet brand	Sheet thickness, mm	Profile height, mm	Application area
From 8	0,5	8	Wall cladding, interior decoration
From 21	0,4-0,8	21	Roofing, building cladding
NS 44	0,5-0.7	44	Roofing, garages, hangars
NS 35	0,8	35	Formwork, fences, roofing
H 57	0,7-0,8	67	Roofing, formwork, floors
H 60	0,9	60	Roofing with spans up to 2 meters, ceilings. load-bearing elements
H 75	0,7-0,9	75	Roofing, formwork, intermediate floors
H 114	0,9-1,0	114	Roof with 6 m lathing, load-bearing structures

How to choose a professional sheet?

I would also like to give a few tips on choosing a profiled sheet:

• For the installation of fences and barriers, a profiled sheet with a wave height (corrugations) of 8-21 mm is suitable. This material includes grades C8-C 21. It is desirable that the products have a durable coating, for example, polymer, otherwise, under the influence of atmospheric precipitation, the initially elegant design will quickly lose appearance.
• For roofing, it is better to use material with a profile height of 18-35 mm. Suitable grades C 18, C 20, C 21, NS 35. The professional sheet of these brands has sufficient bearing capacity.
• It makes no sense to talk about the bearing profiled sheet of high grades, since it is usually not used in individual construction.

Advice . When choosing a profiled sheet for a roof, it should be noted that it is better not to use sheets of small length. A large number of joints will certainly affect the quality of the coating. In addition, material consumption increases due to overlaps and fasteners, and this is a financial component.

The professional flooring galvanized has rather wide range of application.

Usually designs from it are installed as:

• Fixed formwork when pouring the foundation.
• Load-bearing structures and intermediate floors.
• Temporary or permanent fencing for industrial buildings.

In general, galvanized profiled sheet is used wherever not the appearance of the material is important, but its lower cost.

A profiled sheet coated with polymers or varnish is used during installation:

• Trade pavilions, kiosks, containers.
• Industrial premises, gas stations, warehouses.
• Sheathing of facades of buildings.
• In country and cottage construction.
• For internal works for finishing.
• For gates, fences and gates.
• For covering roofs in buildings with large spans and increased requirements for specific loads.

For what purposes is it better not to use a profiled sheet?

It would seem that such a universal material as a profiled sheet can be used in all areas of construction under various conditions.

However, there are some installation restrictions for it:

• In an aggressive and humid environment, it is better not to use profiled sheet structures, because this is not an inert plastic that is neutral to water. metal sheets from the ends are very susceptible to corrosion, which significantly shortens their service life. Therefore, if there is a desire to enclose a dunghill or put the lower part of the fence close to the ground, at least paint the edges of the sheets with paint.
• It is also undesirable to use a profiled sheet for the assembly of storage-oriented structures. food products. Since the sheets are coated with zinc (even under a polymer coating), it forms toxic salts when interacting with acids.
• It is not recommended to use a profiled sheet to cover a roof without a crate. Although craftsmen, saving time and energy, manage to nail sheets over the old coating. For fidelity, also laying cellophane. However, at the same time, no one thinks that when the temperature drops, condensate forms, which is not removed, but lingers under the profiled sheets. As a result, the service life of the roof is significantly reduced.
• As shows practical experience and SNIPs, it is not worth covering the roof with a profiled sheet at a roof slope of less than 100. During heavy rains or when snow melts, water will flow into the under-roof space.
• It is inconvenient to work with a profiled sheet and when installing a complex roof.