The thicker plywood or boards aren t that much extra more expensive and you ll never have to worry bout them again.
1 2 or 3 4 plywood for attic.
The sheets are generally 4 x 8 or 4 x 12 feet in size.
1 2 suffices but 3 4 is better or any old scrap 1 x 6 1 x 8 etc.
A plywood subfloor generally uses 1 2 inch to 3 4 inch thick sheets of plywood that have one rough side which faces down and one smooth side which faces up.
That s what you should find on your home s main flooring areas.
Cut the plywood into manageable strips about 10 inches wide to make the job easier.
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.
You need 3 4 inch plywood.
For pricing and availability.
Plywood is an engineered wood that s made by gluing together thin layers of wood veneers.
If your joists are 16 on center then you could get away with 1 2 plywood.
It s economical durable and can be used in a variety of ways including flooring paneling and furniture making.
3 8 seems thin 1 2 may do it 5 8 seems thick and home depot has other thickness like 19 16 etc.
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 inch plywood or.
Severe weather 1 2 in common southern yellow pine plywood sheathing application as 4 x 8.
What thickness of plywood should be enough for an attic floor such that it could support persons as heavy as 225 pounds.
Top choice blondewood 3 4 in whitewood plywood application as 4 x 8.
It might seem impossible to haul it up to the attic.
Plywood comes in large sheets.
Obviously using 3 4 plywood on 16 joist centers is also good.
Osb oriented strand board.
Severe weather 1 2 in common southern yellow pine plywood sheathing application as 4 x 8.
While plywood has been a top choice among homeowners for furnishing home interiors a variety of alternatives have sprung up offering a cheaper price better appearance etc.
Install two by four blocking between joists or wherever needed to support edges of the plywood that do not have support from the bottom.