The selection of wood-based panels for roof decking depends on a .. thicknesses of plywood, particleboard and OSB for different maximum spans. These are.
roofing material, but also the entire wood deck or sheathing beneath the roofing. In older garages, the . A rough (not sanded smooth) exterior grade plywood (CDX) makes an excellent replacement deck. . thickness of the old deck. For any.
14 Mar 2016 . 1/2 inch plywood deck may be fastened over wood shingles as noted in Item 6 . width boards or 1/2 inch (minimum) thickness plywood may be.
Our Design Guides help you pick the best Deck to suit your project. . Plywood used for roof decks is generally 18mm thick, but it is possible to specify a.
9 Jan 1998 . This decking provides two properties - one, it helps brace the framing in a . 5/8" thick plywood with proper attachment to the rafters/trusses.
(1) The thickness or rating of roof sheathing on a flat roof used as a walking deck shall conform to either Table 22.214.171.124. . Plywood and OSB, O-2 Grade.
Plywood for a roof deck should be of marine grade and suitable for external use to BS . a minimum thickness of 18mm (these will be able to span up to 600mm).
. a more specific term used to describe boards or panels that form the roof deck. . Over the years, plywood replaced boards, and oriented strand board, or OSB, . The typical thickness of roof sheathing is about 7/16-inch, which is just under.
Easy-Ply Roof Deck. Homasote EasyPly Roof Decking is designed for use as a structural, load-bearing . Panel Thickness, Max. rafter spacing for live loads of:*.
Plywood - If you have a plywood roof deck, make sure that you have at least 15/32" (or ?") plywood thickness if the rafters are set at sixteen inches (16") on.
Occasionally I have seen 3/8" plywood on a roof. It is certainly not preferred by professionals interested in quality. Mixing thicknesses is not.
6 Dec 2010 . Sheathing should be a minimum of 19/32-inch thick. . of wood used for roof sheathing are oriented strand board, known as OSB, and plywood,.
If plywood of inadequate thickness was used on your roof, a complete roof . re-roof, though, use what is there unless you are replacing all of the decking as well.
4 Oct 2016 . The type, grade, thickness and installation of materials used for roof decks should conform to the requirements of the . Plywood roof deck.
The ?-inch thick boards extend from the eaves just past the exterior walls, where they butt up against the plywood roof sheathing. Roof material then covers all.
28 May 2016 . Both OSB and plywood panels can cut and installed on a roof using . While a sheet of plywood might be 5 to 7 plies thick, a sheet of OSB is.
3 Oct 2013 . Far too often I see OSB “sag” between the trusses making your roof look wavy. . Over the years I have seen claims for plywood decking delaminating, . While a sheet of plywood might be 5 to 7 plies thick, a sheet of OSB is.
23 Apr 2016 . I am replacing my composite roof with a new composite roof shingle . Do NOT fasten shingles directly to insulation or insulated deck . Except that LA Department of building and safety will not accept 3/8" thick plywood, but.