History Of Gypsum Roof Deck

Metal roof decking and gypsum roof decks were more prevalent and required a roof insulation overlay.

History of gypsum roof deck.

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. Deteriorated gypsum deck deck repair sequence 2. Galvanized wire mesh removing deteriorated gypsum deck 4. Gypsum concrete roof deck system.

Bags of gypsum concrete 3. Many of these installations continue to perform and provide support to roofing materials that have been added over time. 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. 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. It was not until 2 years later in 1945 that we knew the 2 500 000 sq. 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. 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.

Cutting section from deck. 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. Gypsum concrete roof deck systems have been installed since the early 1950 s in all types of commercial markets. 1946 a new name.

In the 1950 s new construction methods came in the way of new types of roof decking and dead level roof systems. Therefore many poured gypsum roof decks were not designed and installed with diaphragm shear strength in mind. Venting lwic installed over structural concrete and other non venting substrates. Including a high performance roof board in your roofing system is essential to the protection of the building and the valuable contents inside.

Picture story of gypsum roof materials required 1. The gypsum roof deck system is supported by bulb tees generally spaced from 24 to 32 on center. This was a cost effective way of construction back then and today. Nrdca 600 guideline for application of cementitious wood fiber roof deck systems.

Only gravity load and wind uplift loads were considered. Of poured roof deck in oak ridge tennessee was for the manhattan project.