Flat Bug Or Flat Built Up Gypsum Roof

However in many u s.

Flat bug or flat built up gypsum roof.

Poured gypsum concrete co ncrete block or 2 0. Built up roof none type x gypsum plywood none 27 40 built up roof none plywood type x gypsum board none 67 00 cedar shingles none 1 x 4 8 o c. Gypsum poured over formboards has been used as a substrate for roofing materials since the 1940 s. Gaf conventional built up roof system for concrete decks.

Built up roofing lifespan depending on the climate and the specific materials used built up roofing has an average life expectancy of 15 to 30 years but some constructions can last up to 40 years. None 2 55 5 10 cedar shingles none type x gypsum 1 x 4 8 o c. Most modern residential homes have relatively steep pitches. Gaf conventional built up roof system for wood decks.

Type x gypsum board none 76 35. Old gypsum roof board jimluckn civil environmental. 11 08 18 page 5 of 27 approved fasteners. Gaf conventional built up roof systems for cementitious wood fiber decks.

Drill tec accutrac flat. Gypsum decks incorporated the placement of bulb tees. The marks appear similar to a bug smear on a. Has the deck been deformed or deflected to the point where it ponds water.

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. 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. Densdeck roof board gypsum board georgia pacific gypsum llc.

There s a lot to know about flat roof systems and how they. Built up roofs account for a large percentage of the commercial roofing systems in the. 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. And it has the 1 2 gyp board 2 gypsum roof over metal joists.

Flat roofs make replacing a roof a challenge. Flat roof systems are a bit of an outlier. Its use increased since it provided roof deck fire protection diaphragm values and an economical substrate for roofing. 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. None 72 00 cedar shingles none 1 x 4 8 o c.