It can be deployed on all kinds of flat roofs, including foil, bitumen, gravel, concrete, or green roofs, according to the company. This content is protected by copyright and may not be reused.

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 ...

BUR, or built-up roofing.This material is also known as tar and gravel roofing. It’s made from layers of bitumen and gravel ...