Attic Decking Plywood Thickness

But there s no real reason to use plywood thinner than 3 4 inch.

Attic decking plywood thickness. Plywood roof sheathing 5 8 plywood attic dek 3 8 plywood osb 4x8 11 32 plywood. Cdx plywood should be a minimum of 7 16. These lightweight easy to manage panels can be installed by even the most inexperienced homeowner in about 15 minutes. Several list advise regarding 4 x 8 sheets of plywood flooring being laid on top of joists for decking material in an attic along with pull down access stairs.

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. On center joist spacing. If your joists are 16 on center then you could get away with 1 2 plywood. 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.

The only storage system designed specifically for the unfinished areas over a garage or under a roof. A single 4 pack covers approximately 10 sq. For joists 24 on center 3 4 plywood is what i would use. Cdx plywood is traditional wood plywood made from thin layers of lumber known as veneers.

You need 3 4 inch plywood. Measure the plywood and attic door. Take the measurements for your subfloor and measure enough plywood so that you can cover the entire frame. Universal attic dek 4 pack made for 16 in.

The thinner plywood is acceptable when the joist spacing is 16 inches. The cost savings is insignificant compared to the extra support offered by the thicker material. Attic flooring panels are easy to install with their interlocking edges. Obviously using 3 4 plywood on 16 joist centers is also good.

Purchase half inch 1 27 cm thick plywood to act as your flooring. A single 4 pack covers approximately 10 sq. Installing attic flooring for light storage only 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. You ll need to make sure that the plywood can fit through your attic door.

Another product by racor called. Attic flooring panels are easy to install with their interlocking edges. That s what you should find on your home s main flooring areas.