Osb For Attic Floor

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.

Osb for attic floor.

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. 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. While osb oriented strand board is generally cheaper than plywood it is heavier and not as stiff as plywood and can result in soft squeaky floors under weight the biggest complaint against osb is that it doesn t handle moisture very well so it is more suited for indoor use.

Moisture also affects the strength of plywood. Installing attic flooring for light storage only. Attic pine oriented strand board common. A typical wood framed residential flooring system is more complicated than you think.

Here are a few tips to help you and your house get through the attic flooring installation job unscathed. The subfloor consists of sheet materials that are nailed or screwed to the joists to. What size plywood for an attic floor. I ve used 7 16 osb for decking in an attic.

In addition to the visible surface flooring material the carpet tile or hardwood there is usually an underlayment and beneath that is a subfloor that serves as the foundation and structural reinforcement for the floor. For joists spaced. X 47 75 in install over insulation or unreliable attic flooring boards lock together using a tongue and groove design. Item 12218 model 637367.

23 32 cat ps2 10 tongue and groove osb subfloor application as 4 x 8. In 2001 oriented strand board surpassed plywood in terms of square footage produced. 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. You can install inch plywood or oriented strand board osb in 4 foot by 8 foot panels over existing 16 inch oc joists.

So while exterior glued plywood can be used outdoors it works best. It is cheap and strong enough for the job. Building codes the engineered wood association architects and most builders rate plywood and oriented strand board obs sheathing equal in strength and durability.