Gypsum Roof Decking

Use minimum 13 mm 1 2 inch fillet welds on alternate sides of sub purlins both sides at end joints to main purlins.

Gypsum roof decking.

For fire rated roof decks weld per fire test assembly. 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. Gypsum concrete roof deck systems have been installed since the early 1950 s in all types of commercial markets. The gypsum concrete which spans tee to tee encases the tees and.

Gypsum deck from underneath. 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. Gypsum concrete roof deck systems consist of a form board wire reinforcement and a poured application of gypsum concrete. Keydeck mesh is made up of 2 hexagonal mesh composed of woven 19 gauge galvanized wires with an additional 16 gauge galvanized longitudinal wire placed at every 3 interval of its width.

Gypsum deck plank for roof decks. If one is considering mechanically fastening a base. Densdeck roof boards are easy to. The gypsum roof deck system is supported by bulb tees generally spaced from 24 to 32 on center.

Introduced as a roof deck substrate in the 1940 s. The sustainable design has earned independent certification from scientific certification systems. The top of the metal banded material will look like white sheet rock. Keydeck woven wire mesh is commonly used in repair of poured gypsum roof decks.

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. Venting lwic installed over structural concrete and other non venting substrates. 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.

Bulb tees are high strength lightweight steel sections. Gypsum concrete roof deck system. Picture story of gypsum roof deck repair sequence nrdca 600 guideline for application of cementitious wood fiber roof deck systems technical bulletin 1001. 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.