Modified Bitumen Roofing Systems: Layers, Types, and Installation Methods
Modified bitumen roofing is one of the most widely installed low-slope roofing systems in North America and Europe. The membrane is a factory-fabricated sheet built from asphalt modified with polymers such as styrene-butadiene-styrene (SBS) or atactic polypropylene (APP), reinforced with a mat of polyester or fiberglass, and surfaced with mineral granules or a smooth coating. […]
