The thinner plywood is acceptable when the joist spacing is 16 inches.
Attic walkway plywood.
Once you re done laying down all of the plywood your attic floor is finished.
Attics with existing flooring alternatively your attic may already have some sort of floor but this doesn t necessarily mean you can build rooms.
Continue the process until the flooring is finished.
We normally recommend that you place plywood over the top of the rafters creating a walkway to the a c and in that area only lay in one or two layers of unfaced fiberglass blanket on top of the plywood walkway and around the ac unit itself.
The intent is to lay down the boards and the ends should attach to a ceiling rafter.
After that screw it in place using the 2 inch deck screws.
The first plank is placed at the entrance of the attic walkway on the first horizontal chord.
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.
We used leftover plywood scraps to build ours an attic walkway also needs enough support.
The surface itself just has to be strong enough to handle your weight along with tools and gear.
Place the first plywood sheet on top of the 2x structure starting by the attic entrance.
If you plan to finish the floor in the attic and turn the room into a living space however you should always use 3 4 inch.
The plywood should be laying on top of the subfloor with no overhang.
No matter what the spacing is on your ceiling joists 3 4 inch plywood should be used if you plan on walking on it.
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.
Ensure that the end of the first plywood sheet lands on a piece of 2x leaving enough room to position the.
An attic walkway doesn t have to be pretty or expensive.
A 4 foot long plywood strip will need at least 8 screws on it.