Form Board Roof Decking

Steel form decking for commercial construction keywords.

Form board roof decking. New millennium created date. For information on large panelized roof systems refer to the commercial construction application section. Oriented strand board isn t plywood nor is it a type of particleboard fiberboard or wafer board and although it is a newcomer to a plywood dominated market its use for exterior sheathing is. There are two most common features of the wooden t g roof deck type that you can use to identify it.

Gypsum poured over formboards has been used as a substrate for roofing materials since the 1940 s. Correct installation of roof sheathing will ensure the best performance and help reduce complaints and callbacks. The last one is none other but our main topic in this article. 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.

1 2 12 7 mm and 5 8 15 9 mm densdeck roof board may also be used in vertical applications as a backer board or liner for the roof side of parapet walls. Densdeck roof board can also be used as a form board for poured gypsum concrete deck in roof applications as well as a substrate for spray foam roofing systems. Plank sheathing usually 1 6 or 1 8 was used as a roof deck before plywood. Common roof sheathing applications and installation recommendations are described in the related publications listed at right.

Formboards used with gypsum roof decks include fiberglass formboards mineral fiber formboards and asbestos panel formboards. Accordingly covered property within the meaning of the iso building and personal property coverage form is the building and not individual components such as its roof shingles or roof decking. Take proper saftey precautions when removing or working with asbestos panel formboards. Code of standard practice.

In the first half of the 20th century roofs in missouri were built with wood shingles over planks spaced about 1 apart. The bulb tees which are very strong vertically but quite flexible horizontally provide the long span strength.