Flat Bug Or Flat Built Up Gypsum Roof

Gaf conventional built up roof system for concrete decks.

Flat bug or flat built up gypsum roof.

Cities with older housing stock think federal hill in baltimore or alexandria virginia s old town the roofs are often flat or have very low slopes. Drill tec accutrac flat. Gaf ruberoid modified bitumen roof systems for gypsum decks. Doing a building assessment to see if we can bring a 45 year old building up to current code.

Flat roof systems are a bit of an outlier. None 72 00 cedar shingles none 1 x 4 8 o c. The marks appear similar to a bug smear on a. 11 08 18 page 5 of 27 approved fasteners.

Gypsum decks incorporated the placement of bulb tees. Condition of the roof deck is it corroded detached damaged or unsafe. In general built up roofing tends to fare better in warmer climates than in cold regions. Gaf conventional built up roof systems for cementitious wood fiber decks.

Flat roofs make replacing a roof a challenge. Most modern residential homes have relatively steep pitches. There s a lot to know about flat roof systems and how they. Poured gypsum concrete co ncrete block or 2 0.

Type x gypsum board none 76 35. Has the deck been deformed or deflected to the point where it ponds water. 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. If you find any good info please post it in here and i ll do the same.

Gaf conventional built up roof systems for wood decks. Its use increased since it provided roof deck fire protection diaphragm values and an economical substrate for roofing. None 2 55 5 10 cedar shingles none type x gypsum 1 x 4 8 o c. Old gypsum roof board jimluckn civil environmental.

Gypsum poured over formboards has been used as a substrate for roofing materials since the 1940 s. Gaf conventional built up roof system for wood decks. Densdeck roof board gypsum board georgia pacific gypsum llc. However in many u s.

Built up roofs account for a large percentage of the commercial roofing systems in the. Fig 4 is the deck capable of handling a heavier roof system such as replacing a built up roof membrane 4 10 psf with a ballasted single ply system 10 20 psf.