An attic can be floored with 1/2″ CDX plywood, if it is being used only for storage. However, the same can't be said if you are planning on using the space as a living space. In that case, you will need to use 3/4″ thick plywood. ... The building code allows for the use of OSB in place of plywood for subflooring.Apr 24, 2015
Is it OK to put plywood over attic insulation?
While you can construct dams around recessed lights that aren't IC-rated to keep insulation away from them, you can't cover them with plywood. ... Don't install a moisture barrier on top of the insulation. It will cause moisture to condense in the insulation, and the insulation may clump or mold may grow.
Can I put a subfloor in my attic?
Laying a subfloor in the attic is very similar to laying a subfloor in any other kind of room except that an attic has a few special considerations. ... The U.S. Department of Energy states that an insulated attic can significantly reduce heat loss and energy costs.
Is it OK to put plywood in the attic?
If your attic joists won't bear the weight necessary to finish out a living space but the engineer cleared them to support floor decking for light storage, you can install ½-inch plywood or oriented strand board (OSB) in 4-foot-by-8-foot panels over existing 16-inch OC joists.Sep 24, 2020
What type of flooring is best for attics?
Resilient flooring, such as laminate or vinyl, is one of the best choices you can make for attic floors. This type of flooring can soften the sounds when installed over an underlayment.
Can I cover my attic insulation with plywood?
Once the insulation is down, you can turn your attic into valuable storage space by covering the floor with plywood. It will also make the attic a safer place in which to walk.
How thick should plywood be to walk on?
Sizing the Plywood No matter what the spacing is on your ceiling joists, 3/4-inch plywood should be used if you plan on walking on it. If you plan on placing the plywood around the perimeter of the opening or door and using it only to store light boxes or materials, 1/2-inch-thick plywood should suffice.
Can you put boards over blown in insulation?
If blown-in insulation is used, control the height or thickness of the layers so boards can by laid over top without having to compact the filler. By adding the boards, you increase storage space for items not needed often, allowing you to move those items out of the main house and reduce clutter.
Can you cover insulation in attic?
The good solution for this is a house wrap material (often referred to by the popular commercial brand Tyvek) which allows vapor to pass through while blocking water itself on the outside of the home. You can also put up a thin board, plywood, or even drywall, if the goal is simply to prevent accidental contact.Oct 13, 2015
Can you put 2 layers of insulation in attic?
You should install two layers of insulation in your attic; wood joists must be covered to allow the air to move. The first layer will sit between the joists, and the second layer will run perpendicular over the joists. The first layer should have the facing against the drywall to act as a vapor barrier.