Did you know that 25% of roofs have a flat roof incorporated within it. Over half of the roof leaks that we deal with originate on the flat portion of the roof. Because of this Guyette Roofing spends a disproportionate amount of time on the flat areas of a roof. We install two layers of protection on every flat roof. The fist layer is a synthetic membrane that adheres to the decking below, creating a moisture barrier and a leak proof underlayment. The top layer is a layer of asphalt (same as shingles) modified bitumen. We install this double-layer roof system on every flat roof.