Roofing materials are products used to cover and protect the top of a structure or building ... The overlapping of pieces and the natural effects of gravity create a natural downward flow of water and ...

Instead of overlapping shingles, flat roofs use modified bitumen, single-ply membranes or other materials for waterproofing. So, no flat roof is perfectly flat; it only looks flat. The illusion of ...

To provide protection against the weather, roof curbs are equipped with an integral flange. There are many different types of products. Choices include metal roof curbs, flat curbs, pipe curbs, pitch ...