Attic Decking Thickness

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.

Attic decking thickness.

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. Purchase half inch 1 27 cm thick plywood to act as your flooring. Take the measurements for your subfloor and measure enough plywood so that you can cover the entire frame. I ll nail the sheets down to the joists.

Another product by racor called. 19 32 and 5 8 inch thick panels require joists spaced 20 inches on center. The strongest lightest easiest raised attic boarding system available insulated your attic and lost your storage. 7 16 15 32 and 1 2 inch thick panels require joists spaced 16 inches on center.

5 8 is cheaper 17 00 a 4x8 sheet vs 21 44 a 4x8 for 3 4 can i get away with the 3 4. Coronavirus update september 2020 we are fully open and able to. No matter what the spacing is on your ceiling joists 3 4 inch plywood should be used if you plan on walking on it. Osb attic decking has a convenient tongue and groove design for easy installation.

Use the tongue and groove feature to lock multiple boards together and improve the organization of your storage space. You need 3 4 inch plywood. I m a big guy 6 3 and around 230 so the guy at home despot suggested one of the above. Provide additional storage space to your home or garage by selecting this excellent attic dek universal attic dek made for on center joist spacing.

You ll need to make sure that the plywood can fit through your attic door. Measure the plywood and attic door. Joist spacing and attic use the joist spacing in some attics is 24 inches and 1 2 inch sheets will sag and possibly break when spanning that distance. Get it back with loftzone storefloor strong enough to walk on and easy to fit join tens of thousands of happy customers worldwide.

The thicknesses are as follows. I need more storage space up there.