How to choose corrugated roofing

Decking is an inexpensive, practical material used to cover the roof of private and industrial facilities. In the Almet online store, you can choose a product taking into account the main characteristics of the thickness, steel grade, type of material (painted, galvanized), intended use. The company's specialists will tell you how to choose a profiled sheet for the roof according to the required criteria.

How thick should the roof decking be?

In the manufacture of roofing sheets, sheet steel with a thickness of 0.33-1 mm is used. The parameter characterizes the strength properties of the future structure for force loads and bending. In private construction, steel with a thickness of at least 0.5 mm is used. Industrial facilities are covered with profiled sheet 0.6-1 mm. Wave height is also important when choosing, as it is responsible for the rigidity of the product.

What brand to choose corrugated roofing?

The material is of several types. The marking is selected based on the planned roof structure.

Facade is denoted by the letter C and is used for fences, wall decoration. Wall (bearing) H is needed for cladding walls and partitions. Suitable for covering roofs with small surface area and light snow loads. For large buildings, as well as buildings with a large wind and snow load, it is better to choose a roofing type, this is the HC class. The numbers next to the marking indicate the height of the profile.

For the roof, it is advisable to choose a material with the type of brand HC 35 or HC 60.

Roof deck marking

Marking is needed to determine the type of profile. In addition to the letter designation C, H or HC, the name indicates the thickness of the metal, the type of coating, the color number, the height and type of wave, the width of the sheet. To find out how to choose the right roof decking , you need to study the characteristics of each brand and purchase the best option for your case.

Types of protective coating

Sheet steel is coated with a special coating during production.

What types are available for purchase:

• galvanized. Hot applied at the factory;
• with polymer coating.

Zinc copes well with the anti-corrosion protection of the roof. Such products are cheaper, in demand for flooring of outbuildings, garages, sheds.

There are different types of polymer coating. In addition to the protective function, it performs a decorative one. The top layer can be made from the following bases:

• acrylic. Looks beautiful, but not durable, needs constant tinting;
• plastisol. Durable coating with the greatest thickness of 200 microns, but quickly burns out;
• polyester. It is applied in a small layer of 25-30 microns, it can be with a glossy and matte surface. The main problem is instability to abrasion, mechanical damage, low anti-corrosion ability;
• pural. Possesses higher characteristics of wear resistance. Does not fade, does not scratch, protective layer 50 microns;
• polyvinylidene fluoride PVDF. This is fluoroplastic. The most durable coating. Does not collapse under the action of UV rays, resists mechanical damage, external weather conditions. Wide choice of color scale. Costs more.

Due to the large assortment, you can choose any option.

The choice of the length of the corrugated sheet for the roof

The sheet is available in standard sizes. The most popular are 3, 4 and 6 m. It is convenient to work with such products if you need to lay the roof of a private house.

With a roof slope with parameters of more than 6 m, you should not purchase large 12-meter variations. In pursuit of the absence of joints, the reliability of the coating will suffer. Metal shrinks in the cold, the error is noticeable for products with a large area. If you install integral sheets on the roof, then after the first frost, gaps may appear at the attachment points. This will certainly affect the quality of the coating.

What do the letters and numbers mean in the marking of corrugated roofing?

Corrugated sheet has a standardized marking. Before choosing a corrugated roof, you need to know what each indicator means:

• letters at the beginning (S, H, NS) assignment. What it is used for, universal, only for partitions, etc.;
• the first digit after the letter is the height of the corrugation (wave) in mm;
• the second thickness of the metal;
• third overall / mounting width;
• latest product length.

There may also be additional letters that indicate the type of protective coating.

What type of corrugated board is suitable for roofing?

For a standard pitched roof, a profiled sheet with a thickness of 0.5-0.6 mm of the NS brand is used (corrugation height from 35 to 60 mm). Length from 3 to 7 meters. It is better to choose a coating with polymers, as it will last longer, wear-resistant, and look beautiful compared to conventional galvanizing.

What to look for when choosing a corrugated roof?

When choosing, we take into account the following parameters:

1. metal thickness. In this matter, more is not better. The optimal value is 0.5 mm. Strong enough to withstand the weight of a person, wind and snow loads.
2. Profile height (corrugations). Responsible for the degree of hardness. Additional ribs give the design better performance. The smaller the angle of inclination, the larger the parameter should be.
3. Sheet length.
4. Cover type.
5. Material weight.
6. The cost of a unit of goods.
7. Availability of certificates of conformity, guarantees.

When buying, it is important to conduct a thorough visual inspection. Check for defects, dents, scratches, chips, peeling paint. With moderate bending, the sheet should restore its original shape.

Which corrugated board is better to put on the roof of the hangar, and which one - on the roof of a private house?

Hangars, workshops, warehouses are buildings of industrial significance. Roofs have a rare sheathing pitch, so it is better to select embossed products with a high threshold of strength. Suitable for H60, H75 and above. The structure must be reinforced with stiffeners. This guarantees the absence of deflections in spans and withstands climatic loads. The thickness of the steel is not less than 0.6-1 mm. If you need to know how to choose a corrugated roof for a garage, it is better to seek help from Almet managers.

A private house, a cottage can be covered with flooring of the HC 35, HC60 brands. Versatile material, convenient and economical to use.

What is the value of corrugated board as a roofing material?

This material is used for roofing for a number of reasons:

• it is made of steel using cold rolling technology, which makes it possible to obtain a durable product at the output;
• the low cost of raw materials allows you to form affordable prices for the final product;
• due to profiling, the strength characteristics and rigidity of the sheet are improved (different forms are U-shaped, wave, trapezoidal);
• light weight;
• environmental friendliness;
• ease of installation;
• long service life;
• new technologies make it possible to choose goods of different colors.

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