Us Use Of Gypsum Roof Deck

The client wants to close a bunch of existing roof penerations that had existing duck work with a steel plate bearing on the existing deck.

Us use of gypsum roof deck. The sustainable design has earned independent certification from scientific certification systems. I am working on this building from around 1960 and it has an existing poured gypcrete roof deck system that spans to bulb tees that span to the steel structure. Including a high performance roof board in your roofing system is essential to the protection of the building and the valuable contents inside. 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.

Gypsum decks incorporated the placement of bulb tees generally spaced 24 to 32 inches on center a fiberglass formboard galvanized wire mesh and fast setting poured gypsum. Gypsum decks incorporated the placement of bulb tees. These include office complexes schools public buildings shopping malls and warehouses located throughout the united states. Gypsum poured over formboards has been used as a substrate for roofing materials since the 1940 s.

Many of these installations continue to perform and provide support to roofing materials that have been added over time. Its use increased since it provided roof deck fire protection diaphragm values and an economical substrate for roofing. Securock brand gypsum fiber roof board s dense concentration of gypsum and cellulose fibers provides exceptional panel and bond strength low surface absorption and superior wind uplift performance with no face layer to delaminate. Steel light gauge cold rolled sections welded or screwed to bar joists see fig 1 wood sheathing sawed lumber plywood or osb oriented strand board concrete poured in place or precast.

The basic roof decks commonly used with commercial membrane roofing systems are. Anyway we have decided to remove the gypsum deck in the area of the drift load and re roof with metal deck insulation and an adhered epdm. Its use increased since it provided roof deck fire protection diaphragm values and an economical substrate for roofing. The maximum drift load is 85 psf and the roof is spongy in areas making us suspect water has gotten into the system.

Understand the proper repair of poured gypsum roof decks installed in the 40 s 50 s and 60 s to allow continued use of these systems without removal and disposal costs. With its combination of fire resistance strength and dimensional stability industry professionals count on densdeck roof boards to enhance the performance of their roofing systems.