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Modified Bitumen
Modified bitumen is a multi-layer asphalt roofing system for flat and low-slope roofs, reinforced with fiberglass or polyester and modified with rubber (SBS) or plastic (APP) polymers.
Modified bitumen provides redundant waterproofing through multiple layers — typically a base sheet, one or two modified bitumen plies, and a cap sheet. SBS (Styrene-Butadiene-Styrene) modified bitumen is more flexible and preferred in climates with temperature swings like DFW. APP (Atactic Polypropylene) modified bitumen is torch-applied and more UV-resistant. JRH Construction installs both SBS and APP modified bitumen systems on commercial properties throughout Dallas-Fort Worth.