Gypsum Concrete Roof Deck Construction

Venting lwic installed over structural concrete and other non venting substrates.

Gypsum concrete roof deck construction.

Roof deck is placed between or over roof supports and used as a base for the roof covering system. Many of these installations continue to perform and provide support to roofing materials that have been added over time. In cincinnati columbus dayton southern ohio the blue book building and construction network. Usg securock brand gypsum concrete patch is mill formulated and composed of specially calcined gypsum and wood chips or shavings.

The only cementitious structural panel approved by factory mutual fm fm approval standard 4472. Gypsum concrete roof deck system. Formboards placed between the bulb tees contain the fast setting poured gypsum roof deck. You may also check out our complete list of companies.

Exceptional strength excellent fire performance and the versatility to patch many decks such as gypsum roof decks. A concrete roof deck that can be combined with other noncombustible materials to create 1 and 2 hour fire rated roof ceiling assemblies. This is similar to using floor underlayments as the subfloor base for the floor covering. 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.

According to fields corp the compressive strength of the gypsum is 500 psi. Typcally the poured gypsum deck is about 2 to 3 thick not 1 2 as you previously mentioned and is supported by bulb tees. I have generally seen the tees spaced about 30 to 36 on center. Gypsum concrete roof deck systems consist of a form board wire reinforcement and a poured application of gypsum concrete.

This system provides fire resistance seismic and wind load diaphragm values in addition to an economical roofing membrane substrate. Picture story of gypsum roof deck repair sequence nrdca 600 guideline for application of cementitious wood fiber roof deck systems technical bulletin 1001. It is mixed at the jobsite with clean water only and poured in place as a patch for existing gypsum decks. Gypsum concrete roof deck systems have been installed since the early 1950 s in all types of commercial markets.

Introduced as a roof deck substrate in the 1940 s. Commercial roof deck concrete gypsum wood etc. Usg securock gypsum concrete patch is noncombustible and used in several ul approved roof deck systems. These include office complexes schools public buildings shopping malls and warehouses located throughout the united states.