Established its mass production

B). Slantsy roof

Shtets is a natural material, and before it was not available to everyone, but only to very rich people. The domes of royal castles and church cathedrals were covered with such roofing material. The technological process of the production of shale tiles for the roof has not changed, and some Western companies have established its mass production. The type of shale tiles is diverse, it can be of different sizes and thicknesses, and you can lay it in accordance with your imagination.