Gypsum Plank Roof Deck

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.

Gypsum plank roof deck.

R values 28 tested in accordance with astm c518 spannings. A type of roof decking that will be discussed is called gypsum roof decking. Cut plank to fit at ends and framed openings. The gypsum concrete which spans tee to tee encases the tees and.

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. Introduced as a roof deck substrate in the 1940 s. Gypsum concrete roof deck system. 1 4 spans flute widths up to 2 5 8 flexural strengths parallel lbs.

Stagger joints in adjacent courses. These include office complexes schools public buildings shopping malls and warehouses located throughout the united states. Place plank on lower flanges of sub purlins or other framing with ends and edges supported. The gypsum roof deck system is supported by bulb tees generally spaced from 24 to 32 on center.

1 4 dens deck roof board. Securock brand gypsum fiber roof board s unique fiber reinforced homogenous composition gives the panel strength and water resistance through to the core. A concrete roof deck that can be combined with other noncombustible materials to create 1 and 2 hour fire rated roof ceiling assemblies. 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.

The only cementitious structural panel approved by factory mutual fm fm approval standard 4472. Formboards placed between the bulb tees contain the fast. This system provides fire resistance seismic and wind load diaphragm values in addition to an economical roofing membrane substrate. 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.

The bulb tees which are very strong vertically but quite flexible horizontally provide the long span strength. Each plank weighs approximately 135 lbs. Support end joints with cross tees not supported by framing. Gypsum concrete roof deck systems have been installed since the early 1950 s in all types of commercial markets.