The Choice of Roofing Material Must Be Approeched Serious and Responsibly. The more Interesting and More Complicated the Design of the Roof, The More, For Example, A Flexible Tile Has a Positive Compared to Metal Tiles. Dome Roof Requires Large Costs of Material, Large Pruning. IT MUST ALSO BE Taken Into Account That The Roofing Material Has Different Weights, and the Load OF THE RAFTERS CanDrable. Before Installing the Roof. Go to the Workwear Store and Purchase The Clothes You Need for Construction there. Flexible Tiles NEED A DENSE CONTINOUUS BASE from OSP and Moisture -Resistant Plywood, And Under the Steel Roof Quite Simple, Located in a Large Step, Boards.