Gypsum Roof Deck

Old bald asphalt roof over wet fiberboard over asphalt felts and the white is a gypsum deck.

Gypsum roof deck. Formboards placed between the bulb tees contain the fast setting poured gypsum roof deck. Westpro offers woven wire mesh used in monolithic roof decks and interstitial service space applications. The fiberglass mat faced noncombustible as described and tested in accordance with astm e136 nonstructural gypsum core panels provide superior fire resistance and protection from hail damage and hold up well under normal construction and maintenance foot traffic while stiffening and stabilizing roof decks. Keydeck woven wire mesh is commonly used in repair of poured gypsum roof decks.

The bulb tees which are very strong vertically but quite flexible horizontally provide the long span strength. Formerly known as pyrofill gypsum concrete securock brand gypsum concrete patch is a high performing gypsum patch solution that delivers a professional finish on a variety of poured roof decks. Gypsum deck from underneath. Pyrofill monolithic gypsum roof deck by united states gypsum co.

Introduced as a roof deck substrate in the 1940 s. Poke too hard and the tool will go through the deck. Usg securock gypsum concrete patch is noncombustible and used in several ul approved roof deck systems. Venting lwic installed over structural concrete and other non venting substrates.

This system provides fire resistance seismic and wind load diaphragm values in addition to an economical roofing membrane substrate. Gypsum concrete roof deck systems have been installed since the early 1950 s in all types of commercial markets. The poured gypsum roof deck consists of steel bulb tees a form board usually composed of gypsum or fiberglass wire reinforcing mesh and the gypsum concrete. Gypsum concrete roof deck system.

Many of these installations continue to perform and provide support to roofing materials that have been added over time. Publication date 1920 usage attribution no derivative works 3 0 topics gypsum roof deck roofing division 07 thermal and moisture protection publisher united states gypsum co. These include office complexes schools public buildings shopping malls and warehouses located throughout the united states. Exceptional strength excellent fire performance and the versatility to patch many decks such as gypsum roof decks.

The gypsum roof deck system is supported by bulb tees generally spaced from 24 to 32 on center.