Road American
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Flat modified bitumen roofs require specific technical standards for asphalt or bitumen modification. Key requirements include the use of polymer modifiers, such as SBS or APP, to enhance flexibility and UV resistance. The roofing membrane must meet ASTM D6162 or D6878 standards for performance. Additionally, proper installation techniques, including heat welding or cold adhesive application, are essential to ensure waterproofing and durability. The roof should also have adequate drainage to prevent water accumulation.
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