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0090 Built up Roofing Membrane Four Ply - Flat Roofing - Built up Roofing
 
0090 Built up Roofing Membrane Four Ply - Flat Roofing - Built up Roofing -

Image Text: Downward slope of roof > hot asphalt > roofing felts (36 inches wide) > flood coat of asphalt > 36 inches > gravel > exposure = 9 inches > Note: for 3 ply-exposure = 12 inches > for 2 ply-exposure = 18 inches > base layer of felt (dry laid) with minimum 2 inch overlap at edges > roof sheathing

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ROOFING, Steep Roofing , General, Asphalt Shingles, Wood Shingles and Shakes, Slate , Clay, Concrete and Fiber Cement, Metal, Roll Roofing, Steep Roof Flashings, Valley Flashings, Chimney Flashings, Plumbing Stack Flashings, Roof/Wall Flashings, Hip and Ridge Flashings, Skylights, Solariums, Drip Edge Flashings, Dormer Flashing, Flat Roofing, General , Built-Up Roofing (Tar and Gravel), Modified Bitumen, Synthetic Rubber (Elastomeric, EPDM), Plastic Roofing (PVC, Thermoplastic), Roll Roofing, Flat Roof Flashings

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