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.
Its use increased since it provided roof deck fire protection diaphragm values and an economical substrate for roofing.
These include office complexes schools public buildings shopping malls and warehouses located throughout the united states.
Gypsum precast or poured in place.
Gypsum concrete roof deck systems have been installed since the early 1950 s in all types of commercial markets.
Its use increased since it provided roof deck fire protection diaphragm values and an economical substrate for roofing.
Including a high performance roof board in your roofing system is essential to the protection of the building and the valuable contents inside.
The maximum drift load is 85 psf and the roof is spongy in areas making us suspect water has gotten into the system.
Many of these installations continue to perform and provide support to roofing materials that have been added over time.
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.
The sustainable design has earned independent certification from scientific certification systems.
The basic roof decks commonly used with commercial membrane roofing systems are.
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 poured over formboards has been used as a substrate for roofing materials since the 1940 s.
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.
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.
Gypsum decks incorporated the placement of bulb tees.
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.
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.
