Should I Cover Attic Floor With Plywood

Purchase half inch 1 27 cm thick plywood to act as your flooring.

Should i cover attic floor with plywood.

Because the simplest and cheapest way to insulate an attic is to add material to the floor. The recommended thickness of the plywood subfloor is governed by the spacing of the joists. Another option is to skip the plywood flooring altogether and use dimensional lumber. But if the floor is covered in plywood you can t stuff enough insulation beneath it to do the job sufficiently not even in warm climates.

If your plywood subfloor is too thin it might not cope with the load and it might creak or squeak when you walk on it. You ll need to make sure that the plywood can fit through your attic door. To make the job easier use a circular saw to cut the plywood sheet first into 2 2 8 strips which will be much easier to handle. Measure the plywood and attic door.

Some experts suggest that 15 32 inch plywood should be standard if the underlying floor joists are spaced 16 inches apart or less but slightly thicker 3 4 inch plywood should be used for joists spaced further apart. Plywood comes in 4 by 8 foot sheets with thicknesses ranging from 1 4 to 1 1 4 inches. 1 x 6 3 spruce is a step up from pallet quality wood but makes a fine usable floor in an unfinished attic space. Plan to pull up the flooring and layer new.

Plywood flooring thickness is important for proper weight distribution. Adding flooring to your attic is a relatively low cost project running about 5 12 per square foot about 190 for a 10 x 10 area if you do it yourself. Stop using your attic for storage. The thickness that builders use most often for subfloors is 3 4 inch and when they need extra reinforcement.

Extreme care should be used when working in an unfloored attic. Start with the attic floor. Take the measurements for your subfloor and measure enough plywood so that you can cover the entire frame. Attic storage might be a good idea but other issues such as insulation joist spacing and intended usage should be taken into consideration.

Cut the plywood to fit so that each end of the plywood boards lands at the exact center of a floor joist. 7 attach the plywood to the joists with 2 inch wood screws spaced every 12 inches.