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What is a Modified Bitumen Roofing System?

April 26, 2017Bitumen modified Roofing system

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What is a Modified Bitumen Roofing System?

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A. 1. A Modified Bitumen Roofing System is a bitumen modified through the inclusion of one or more polymers (e.g. atactic polypropylene [APP] , styrene butudiene styrene [SBS] ). 2. Composite sheets consisting of a polymer modified bitumen often reinforced and sometimes surfaced with various types of mats, film, foils and mineral granules Application of these systems include Torch Down (not recommended for this system) or installed in hot asphalt or cold adhesive per manufacturers specifications.