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Most people choose slate for this purpose, as it is considered Sama as common and inexpensive. In addition, slate can be used not only as a roof material, but also as a finishing material. The slate has the following characteristics: it is resistant to rot and mold, prevents radioactive radiation, frost -resistant, has high heat transfer, is not subjected to corrosion, racks before frost and convenient when installing. However, it should be remembered that the slate is quite fragile material that can pass moisture, in addition, it has few color solutions.