As the name predicts, The flat roof is not actually flat. It has a very low slope, But such a low slope holds snow and water much longer than a steeply pitched roof. There are three main types of Flat Roofings Membrane or Single Ply, Build-up Roofing (BUR), Modified bitumen (MBR). Olympus Roofing Specialist is a roof contractor Santa Clarita in CA, USA. We provide all kinds of roofing services at an efficient price. Visit us now. Thank you.