Osb Or Plywood For Attic Floor

Osb is cheaper than plywood by about 3 to 5 per panel.

Osb or plywood for attic floor.

The sheets are generally 4 x 8 or 4 x 12 feet in size. Install two by four blocking between joists or wherever needed to support edges of the plywood that do not have support from the bottom. It is cheap and strong enough for the job. Platforms don t have to be plywood.

X 47 75 in install over insulation or unreliable attic flooring boards lock together using a tongue and groove design. Here are a few tips to help you and your house get through the attic flooring installation job unscathed. It might seem impossible to haul it up to the attic. Attic pine oriented strand board common.

The decision regarding the thickness of plywood to use for the subfloor in the attic has a lot to do with how you intend to use the attic and it also. I ve used 7 16 osb for decking in an attic. You can install inch plywood or oriented strand board osb in 4 foot by 8 foot panels over existing 16 inch oc joists. Osb oriented strand board.

Building codes the engineered wood association architects and most builders rate plywood and oriented strand board obs sheathing equal in strength and durability. For joists spaced. A plywood subfloor generally uses 1 2 inch to 3 4 inch thick sheets of plywood that have one rough side which faces down and one smooth side which faces up. It is too thin for a floor in a room but for a lightly used attic it is plenty.

However plywood subfloors are stiffer than osb by about 10. 7 16 and 6 00 sounds more like osb than plywood. As a result osb floors are more likely to squeak due to floor movement cause hard floor surfaces to crack such as tile result in soft spongy floors cost of plywood vs osb. Osb is not attractive enough to serve as a floor covering not only is the chip board appearance unattractive but the surface is also often marked with grid lines and manufacturer markings.

Maneuvering heavy 4 x 8 sheets of plywood or osb oriented strand board up to an unfinished attic is sometimes like trying to fit a square peg into a round hole. What size plywood for an attic floor. Osb when exposed to the weather will eventually swell and bubble up minor instances of bubbling can be sanded but for the most part the osb is irreparable and should be replaced. Osb is now used for about 70 percent of all floor wall and roof sheathing in north america.

Cut the plywood into manageable strips about 10 inches wide to make the job easier.