Poured Gypsum Roof Deck

The gypsum concrete which spans tee to tee encases the tees and.

Poured gypsum roof deck.

These include office complexes schools public buildings shopping malls and warehouses located throughout the united states. Its use increased since it provided roof deck fire protection diaphragm values and an economical substrate for roofing. Keydeck mesh is made up of 2 hexagonal mesh composed of woven 19 gauge galvanized wires with an additional 16 gauge galvanized longitudinal wire placed at every 3 interval of its width. Gypsum concrete roof deck systems consist of a form board wire reinforcement and a poured application of gypsum concrete.

Bulb tees are high strength lightweight steel sections. Many of these installations continue to perform and provide support to. The bulb tees which are very strong vertically but quite flexible horizontally provide the long span strength. The density of dried gypsum concrete varies from 30 to 55 pounds per cubic foot depending upon the design mix and the type of aggregate.

Gypsum poured over formboards has been used as a substrate for roofing materials since the 1940 s. Gypsum concrete roof deck systems have been installed since the early 1950 s in all types of commercial markets. Poured gypsum concrete decks a gypsum concrete roof deck consists of gypsum concrete that is mixed with either wood fibers or mineral aggregate. Gypsum decks incorporated the placement of bulb tees.

If the deck is sound it may be possible to treat the deck much like concrete by priming the surface adhering thermal insulation and installing a new roof membrane.