The roof is a protective shell of the roof of a building that protects it from moisture penetration of atmospheric precipitation. The main purpose of the roof is to prevent moisture from entering the room. Roofs can be made from mineral, metallic and organic materials. They all have their own lifespan. For example, a roof made of straw will last from 5 to 7 years, and a roof made of copper or galvanized sheet up to 100 years. Depending on the set of performance characteristics, the scope of their application is determined..
However, no matter what material the roof is made of, it must meet the following requirements: be light and at the same time strong, be resistant to precipitation and the influence of chemically aggressive substances, and have low thermal conductivity. We will analyze in order all existing types of materials and give an assessment of their performance properties.
Organic
Organic materials include: wood, straw, shingles. These materials have been known since time immemorial and are practically not used today. This group also includes bitumen, various polymers and bitumen-polymer mixtures. They are distinguished by their low dead weight.
The disadvantages of such a roof is its instability to ultraviolet light and oxygen in the air. Because of this, she quickly ages and breaks down. The service life of organic roofing varies from 5-7 to 25-30 years. Another disadvantage is that these roofs are flammable and rotting. However, wood is used as a material for the roof frame.
Mineral
This large group includes cement-sand and ceramic tiles, slate tiles, slate (corrugated asbestos-cement sheets), flat tiles and various roll materials. The service life of such a roof is longer, since these materials do not ignite or rot. They are also not exposed to sunlight. The disadvantages include their extreme sensitivity to temperature changes, especially at the border of the cycle of freezing and thawing of moisture (fluctuations around zero degrees). These materials are also rarely used today in construction. So far, only slate and euro-slate are used (corrugated sheets with bitumen impregnation).
Metal sheets
One of the most durable roofing materials is metal profiled sheets. The service life of such a roof, depending on the operating conditions, can reach 50-100 years. The profile (wave) simplifies the installation work, as well as gives the roof a special look and additional rigidity.
Metal roofing is relatively lightweight. It can be made of black or galvanized steel. Black steel is pre-coated with paint, varnish, varnish or polymer materials. For the manufacture of the roof, non-ferrous metals (aluminum, copper, etc.) are also used, as well as their alloys (for example, aluzinc is an alloy of aluminum and zinc. It is rarely used independently, but is used as an anti-corrosion coating).
In the manufacture of roofs on public buildings, entertainment centers and industrial premises, flat metal sheets with double-sided galvanizing, 0.5-1.5 mm thick, are used. The slope of such a roof should be 14-20 degrees. For arranging such a roof, qualified craftsmen are required..
In construction, copper, aluminum or titanium are increasingly used instead of steel. In particular, copper, despite the high price, is used in the construction of expensive cottages and individual houses. She is preferred for her architectural features. From the variety, your head is spinning, in order not to miss all the little things, we advise you to save the information found on your roof project on an SD SDHC card for the opportunity to read on any medium at any time convenient for you..
The metal tile can be made of all of the above metals can be covered with additional anti-corrosion protection, as well as one or more layers of polymer coating. The polymer coating is not exposed to UV radiation and is resistant to aggressive chemical compounds. The coating is matte and shiny. The advantage of metal shingles is that they are lightweight and durable. However, it must be borne in mind that the roof slope must be at least 10 degrees..