History Of Gypsum Roof Deck

Nrdca gypsum roof deck repair replacement procedure.

History of gypsum roof deck.

In the 1950 s new construction methods came in the way of new types of roof decking and dead level roof systems. Full text of pyrofill monolithic gypsum roof deck see other formats s 7 gypsum roof deck 1 n economical form of poured in place construction that is adaptable to compar atively long spans and provides roofs that are. This system provides fire resistance seismic and wind load diaphragm values in addition to an economical roofing membrane substrate. 1946 a new name.

Only gravity load and wind uplift loads were considered. Therefore many poured gypsum roof decks were not designed and installed with diaphragm shear strength in mind. Cutting section from deck. This was a cost effective way of construction back then and today.

Gypsum concrete roof deck system. Venting lwic installed over structural concrete and other non venting substrates. Gypsum concrete roof deck systems have been installed since the early 1950 s in all types of commercial markets. Bags of gypsum concrete 3.

Of poured roof deck in oak ridge tennessee was for the manhattan project. Light in weight of proven strength rapidly erected quick to set fire resistive heat non conducting condensation minimizing united states gypsum company world s largest. Many of these installations continue to perform and provide support to roofing materials that have been added over time. It was not until 2 years later in 1945 that we knew the 2 500 000 sq.

Metal roof decking and gypsum roof decks were more prevalent and required a roof insulation overlay. 1943 ambitious decisions lead to a historic project with savvy salesmanship from johnson the company is awarded the largest gypsum roof deck job in the company s history. History gypsum cast over formboards and structurally supported by bulb tees or truss tees was introduced as a roof deck substrate in the 1940 s. Using the roof deck as a structural diaphragm was a california development and worked its way across the nation in the late 1950 s and early 60 s.

Including a high performance roof board in your roofing system is essential to the protection of the building and the valuable contents inside. Deteriorated gypsum deck deck repair sequence 2. Picture story of gypsum roof materials required 1. Galvanized wire mesh removing deteriorated gypsum deck 4.

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