At LOA Construction, our professional team offers same-day inspections, and schedule services within a week.
Built-up roofing systems
A built-up roofing system (BUR) is installed with several layers. The first layer is typically rigid roof insulation, which is then covered with asphalt, cover board, several layers of underlayment (tar paper) with asphalt between each layer, a cooling layer cap sheet or coating system, finished with some type of stone. These roofing systems are extremely durable, waterproof, and easy to maintain. The layers of roofing felt (tar paper) are saturated with the asphalt, creating a strong, water-resistant barrier. Even if the top layer was damaged in a heavy storm, in most cases, the lower layers of saturated roofing felt work to stop the water from entering the structure. These roofing systems can meet the highest fire rating in the roofing industry, or earn LEED points, by adding a white granulated cap sheet or aluminum coating for cooling.