Osb Or Plywood For Attic Floor

Attic pine oriented strand board common.

Osb or plywood for attic floor.

I ve used 7 16 osb for decking in an attic. 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. Osb is cheaper than plywood by about 3 to 5 per panel. The sheets are generally 4 x 8 or 4 x 12 feet in size.

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. 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. Install two by four blocking between joists or wherever needed to support edges of the plywood that do not have support from the bottom. However plywood subfloors are stiffer than osb by about 10.

Cut the plywood into manageable strips about 10 inches wide to make the job easier. It is cheap and strong enough for the job. 7 16 and 6 00 sounds more like osb than plywood. Plywood comes in large sheets.

X 47 75 in install over insulation or unreliable attic flooring boards lock together using a tongue and groove design. 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 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.

For joists spaced. You can install inch plywood or oriented strand board osb in 4 foot by 8 foot panels over existing 16 inch oc joists. In 2001 oriented strand board surpassed plywood in terms of square footage produced. 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.

It is too thin for a floor in a room but for a lightly used attic it is plenty. 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. Osb is now used for about 70 percent of all floor wall and roof sheathing in north america.

Platforms don t have to be plywood.