Built-Up Roofing (BUR) Systems

A Built-up Roofing System (BUR), also known as tar and gravel roofing, is a flat or low-sloping roof construction method which consists of alternating layers. These layers are made of bitumen, which can be either asphalt or coal tar with reinforced fabrics. These fabrics can be fiberglass or organic felts. The system is then reinforced and topped with either a layer of gravel or a mineral cap sheet. BUR systems provide excellent protection due to their redundant nature. The multiple layers ensure that even if the top layer is damaged, the additional layers below continue to safeguard the building from water intrusion. They are effective in various geographic areas and climates, particularly in extreme temperatures and weather conditions. Known for durability and longevity, some BUR systems can last up to 30 years or more. Quality workmanship and proper installation are key to a successful BUR system so it’s important to choose the right contractor. Let our team at Four Peaks Roofing assist you today!