The best choices for a flat roof are roofing materials that are truly waterproof: metal and built-up roofing. You can also use roll roofing, but is generally just used for shallow sloped roofs, not flat. Metal Roofing. The first choice for a flat roof today is one made of aluminum.What are the types of flat roof materials?
Specifically, the common types of flat roof materials used by commercial or residential roofing companies in Toronto include: Traditional Tar-and-Gravel – Also known as built-up roofing or BUR. Three (or more) alternating layers of waterproof material and hot tar. Capped with a layer of smooth stone.What is the best replacement for a flat roof?
PVC roofing is known to be one of the best options for a flat roof, boasting easy installation, high reflectivity and outstanding durability. PVC roofs are also able to resist water ponding—a common problem for flat roofs. PVC roofing is not as desirable as a seamless system, however. Because PVC roofing is applied in rolls, it therefore has seams.