The sheets for roofing materials differ not only in the material from which they were made, but also in the shape.
Flat plate is usually made as zinc, galvanized steel, aluminum, zinc-titanium or copper.
In the case of the first three, previously used sheets in the raw form, however, due to their limited durability, currently used materials coated with protective coatings (polyester, acrylic, pural, plastisol, PVDF). Flat sheet is sold mainly in the form of sheets with standard dimensions of 1000 x 2000, 1250 x 2000 and 1500 x 3000 mm, as well as in the form of coils with a width usually in the range from 500 to 1000 mm.
The sheets of this type are laid on the formwork and connected between each other to single or double seams (usually in the so-called standing seam, formed from the curl of the sheets). They are attached to the roof plating using special handles (embroidery, frogs, scales). These elements ensure a slight displacement of the sheets, so that no stresses occur in the cover, which may include deform sheets.
Currently, flat sheets are used for roofing relatively rarely, however, the roofs are formed on roofs with a slope of 10 to 90 degrees. They are usually used as a material for flashing (elements that complement roofing).