managemyroof01
New Member
A is a type of built-up roofing system commonly used on flat or low-slope buildings. It consists of multiple layers of waterproof materials, usually alternating between tar (or asphalt) and roofing felt. These layers are then topped with a layer of gravel or stone to protect against UV rays, weather damage, and foot traffic. The gravel also helps weigh down the roofing materials and improves insulation.