A low-slope (flat) roofing system made of multiple layers of asphalt-saturated felt or fabric alternated with hot-applied asphalt or coal tar pitch and topped with a layer of aggregate like gravel.
Built-Up Roof (BUR)
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A low-slope (flat) roofing system made of multiple layers of asphalt-saturated felt or fabric alternated with hot-applied asphalt or coal tar pitch and topped with a layer of aggregate like gravel.
