3 Ply Built Up Roof Weight

Built up roof membrane 3 ply gravel surfaced.

3 ply built up roof weight.

426 579 lb 193 263 kg. Here s a layer by layer explanation. Built up roofing for an average commercial roof it will usually cost between per 5 50 8 50 square foot in materials and labor to install a typical built up roofing system. Built up roof membrane 3 ply smooth surfaced.

Bitumen ply sheets and a surface material such as asphalt or gravel. This price range can change depending on the materials you choose. Each system is designed to waterproof the roof and protect it from sun rain snow and more. Owens corning roofing and asphalt.

Carson dunlop s sketch illustrates a 4 ply built up roof installation. Owens corning roofing and asphalt. Felt tar and gravel roofing 3 ply 4 8 lb m ft 2 23 4 kg m 2 felt tar and gravel roofing 4 ply 5 3 lb m ft 2 25 9 kg m 2 felt tar and gravel roofing 5 ply 6 1 lb m ft 2 29 8 kg m 2. Each ply sheet layer is laid over hot or cold bitumen to bond it to the roof.

Click to enlarge any image built up roofing is usually used on flat or low slope roofs less than 3 rise in 12 of run. Ply sheets are commonly produced in a standard width of about 36 inches. This prevent leaks mold and rot all of which can weaken the roofing structure and cause costly damage. Built up roofs or burs also called a tar and gravel roof is a well established and popular style of flat roof that is made up of alternating layers of roofing felt or fiberglass and asphalt that is applied with heat which combine to make a long lasting sturdy roofing system.

The ply sheets of built up roofing are special fabrics that are reinforced with fiberglass or organic materials. Built up roofing contains three materials. We have found an occasional bur on steeper slopes including a tar and gravel steep slope roof whose gravel kept washing down into the building s gutter. There are 3 main types of flat roofing systems.

Built up roof bur modified bitumen and single ply. Built up roof membrane 4 ply gravel surfaced.