Road American
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What technical requirements define built up roof vs modified bitumen for asphalt or bitumen modification?
Built-up roofs (BUR) typically consist of multiple layers of asphalt and reinforcing fabrics, providing durability and redundancy. They require a solid substrate and proper drainage. Modified bitumen roofs, on the other hand, utilize polymer-modified asphalt for enhanced flexibility and UV resistance. They can be installed in single or multiple layers and often feature self-adhering options. Key technical requirements include substrate preparation, installation methods, and compliance with local building codes for both systems.
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