Best Plywood For Walkin Attic

For diy attic insulation you ve got two choices.

Best plywood for walkin attic.

Best seller attic dek universal attic dek 4 pack made for 16 in. Build up from the ceiling joists before putting large sections of plywood down. The plywood sheets are usually 8 to 10 feet long so you can cut it into 4 foot strips. No matter what the spacing is on your ceiling joists 3 4 inch plywood should be used if you plan on walking on it.

If your joists are 16 on center then you could get away with 1 2 plywood. Make 4 foot marking on the plywood planks and cut it using the circular saw. The thinner plywood is acceptable when the joist spacing is 16 inches. I would not feel right about walking on the fiberglass but for all i know it could be ok.

Add a good padding and then lay the carpet. 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. Loose fill or batt the common term for blanket insulation. You can lay the cut plywood planks in stepping stone fashion or in.

1 2 plywood or osb should be enough in my non pro opinion. To avoid overhead noise in the rooms below the attic it might be best to carpet the area. On center joist spacing model 351804 60 44 box 60 44. Start cutting from one end and cut all the plywood planks in the same way.

For joists 24 on center 3 4 plywood is what i would use. 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. Obviously using 3 4 plywood on 16 joist centers is also good. Plywood roof sheathing 5 8 plywood attic dek 3 8 plywood osb 4x8 11 32 plywood.

Some people extend the wood up on 2x2s across the rafters to clear insulation but care would be needed to prevent that from slipping. Plywood is lighter to carry which is good. If you re going to need to go back there again get some 2x6 s and notch them to fit between that gap you indicated between the stringers and screw them in so you have a narrow footpath. Lay a plywood base first of 5 8 inch to 3 4 inch thick plywood.

Placing plywood down so that it squashes it can take an r 40 down to r 15 or less. Both can be added to uninsulated attics or layered over existing material. Universal attic dek 4 pack made for 16 in. On center joist spacing.

If you plan to finish the floor in the attic and turn the room into a living space however you. You need 3 4 inch plywood.