built-up roofing

Built-up roofing (BUR) is a durable roofing system commonly used on commercial buildings. It involves layering multiple sheets of asphalt or bitumen with overlapping felts or fabrics, creating a strong, waterproof barrier. This multi-layered approach provides excellent protection against water infiltration, wind, and sun damage. The top layer often includes a gravel or aggregate surface to shield from UV rays and improve durability. BUR systems are valued for their longevity, weather resistance, and ease of maintenance, making them a reliable choice for flat or low-slope roofs in various climates.