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WebSep 3, 2024 · Built-up roofs, or BUR roofing, are constructed out of multiple layers of various materials.These materials–including ply sheet, cover board, and insulation–are bonded together on your rooftop with asphalt.. This layered approach to flat roofing is great for longevity, with each layer of material extending the built-up roof lifespan by an … WebAn excellent fire barrier, DensDeck ® Roof Boards feature a noncombustible core and inorganic surface that offer greater fire protection than other conventional commercial roofing products when applied over combustible roof decks and steel decks. buffalo to cuba flights
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