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.
Attic decking board.
Lay sheets of the plywood onto the floor spanning the joists with a 1 2 inch space between the walls of the attic and the edges of the plywood.
Another innovative option that is specifically designed for attic flooring is a product called attic dek attic dek is a specially designed attic floor system that consists of 16 or 24 squares attached to the top of ceiling joists.
Use the tongue and groove feature to lock multiple boards together and improve the organization of your storage space.
These lightweight easy to manage panels can be installed by even the most inexperienced homeowner in about 15 minutes.
67 99 free returns return this item for free.
Attic dek flooring walking deck boards for attic easy installation floor system for garage roof and more instant organizer new 4 panel pack black brand.
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Measure and mark the length of the boards so that they run across the attic trusses.
Measure and cut boards to size.
Enjoy a clean look and increase the usable square footage of your attic by multiples of 8 sq.
Use a handsaw or circular saw to cut the boards to your measurements.
A single 4 pack covers approximately 10 sq.
If your boards aren t long enough cut multiple boards.
You don t want lots of different floor heights or walking in the attic will be difficult.
If you ever need to cover them with finished flooring you can always nail down another subflooring before installing tile or hardwood.
What size plywood for an attic floor.
Go to a hardware store and purchase 2x4x100 inch 5 08x10 16x254 cm boards.
Osb attic decking has a convenient tongue and groove design for easy installation.
Attic flooring panels are easy to install with their interlocking edges.
Place the sheets of plywood so that the edges of each board ends at the center of the floor joists with a 1 8 inch gap between adjacent boards on the same joist to allow for wood expansion.