Metal roofing is made of galvanized steel sheets coated with a polymer protective layer. Depending on the thickness of the polymer protective layer, the warranty period for metal roofing is up to 30 years. Service life under normal conditions and proper installation 50-70 years.
The wide variety of shapes and colors of metal roofs is widely used both in building renovation and in the construction of new buildings. Light weight (4-5 kg / m2) and quick installation are the biggest advantages of metal roofs, as no reinforced roof load-bearing structure is required, as well as it is possible to cover large areas in a short time.
Depending on the profile, it is possible and recommended to apply a metal roof with a slope of at least 8 °. A metal roof does not make more noise than any other roof, no matter how surprising it may seem, but a properly installed metal roof does not make more noise than any other roofing material. A metal roof is usually laid on solid foundations. In addition, the attic and insulation form a sound barrier.
If you want to install a metal roof covering on an existing roof, then it is necessary to dismantle the old roof covering to the rafters, then an anti-condensation diffusion membrane, double lathing and a metal roof covering are installed. The lats will create a peculiar air pit.
Metal roofs do not attract lightning more than other conventional roofing materials. On the contrary, even if lightning strikes a metal roof, the risk of fire will be minimal compared to other types of coverings, as metal is very difficult to ignite. If you live in an area with a high risk of fire, be aware that metal roofs will extinguish any flammable particles that get on its surface. Also, insects will not be able to damage the metal roof. It is also resistant to rot and mold. Because a metal roof dissipates solar heat fairly quickly, snowmelt is more intense than in traditional roofs.