Professional Roofing Contractors specialize in Flat Roofing Materials, including: Tar & Gravel, Modified Bitumen and Roll Roofing.
Built up roofs are ideal for a lower cost and good weather resistant commercial roof and are used when the pitch is no more than 3 inches rise to 12 inches run. This roof is installed by alternating layers of heavy roofing felt and hot asphalt or tar. The final product is coated with a mineral such as gravel. Built-up roofs are rated by how many layers are applied, usually between 3 and 5 layers are considered standard.