Asphalt

Asphalt, also known as bitumen, is a viscous, black, semi-solid form of petroleum that is commonly used in various construction applications, including roads, roofing, and waterproofing. Asphalt is produced through the refining of crude oil, and it can be processed into a variety of forms with different viscosities, depending on the intended use. In roofing, asphalt is commonly used as a waterproofing material and is applied in layers to create a weather-resistant surface. Asphalt roofing can come in the form of shingles, roll roofing, or built-up roofing, among other types.