Gypsum Plank Roof Deck

Structural panel concrete roof deck is versatile and economic option for both low and steep slope roofs.

Gypsum plank roof deck. This system provides fire resistance seismic and wind load diaphragm values in addition to an economical roofing membrane substrate. The bulb tees which are very strong vertically but quite flexible horizontally provide the long span strength. Densdeck roof boards can replace any generic type x gypsum board in any roof assembly in the ul fire resistance directory under the prefix. These include office complexes schools public buildings shopping malls and warehouses located throughout the united states.

Gypsum deck plank for roof decks. The poured gypsum roof deck consists of steel bulb tees a form board usually composed of gypsum or fiberglass wire reinforcing mesh and the gypsum concrete. Each plank weighs approximately 135 lbs. Introduced as a roof deck substrate in the 1940 s.

Place plank on lower flanges of sub purlins or other framing with ends and edges supported. Gypsum concrete roof deck system. Shown to withstand delamination deterioration warping and job site damage far more effectively than paper faced gypsum board and other conventional roofing products such as wood fiberboard and perlite certified by ul for use as a fire barrier over combustible and noncombustible decks in accordance with the ansi ul 790 and ulc s114 test standard. Unlike traditional roofing systems where multiple layers are required concrete roof deck is both the noncombustible structural sheathing and either the nail base or thermal barrier.

Gypsum concrete roof deck systems consist of a form board wire reinforcement and a poured application of gypsum concrete. Support end joints with cross tees not supported by framing. The gypsum concrete which spans tee to tee encases the tees and. Gypsum roof decking 2 1 gypsum plank roof decking figure 1 2 1 1 gypsum planks are normally 2 inches thick 2 feet wide and 8 feet long and are factory laminated of two gypsum panels.

Securock brand gypsum fiber roof board s unique fiber reinforced homogenous composition gives the panel strength and water resistance through to the core. It provides exceptional bond and low absorption in adhered systems and offers sustainable design for all types of roofing systems including single ply fluid applied built up spray. 40 178 weights nom. Stagger joints in adjacent courses.

Gypsum concrete roof deck systems have been installed since the early 1950 s in all types of commercial markets. 1 4 spans flute widths up to 2 5 8 flexural strengths parallel lbs. A type of roof decking that will be discussed is called gypsum roof decking. Cut plank to fit at ends and framed openings.

Formboards placed between the bulb tees contain the fast. 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.