Putting Plywood Over Attic Insulation

Now that you ve inspected your attic s current insulation and determined how much it has you.

Putting plywood over attic insulation.

Laying foil over on top of insulation on the attic floor. To give yourself enough space to ensure adequate insulation under the. So you can put 8 inches of insulation down then put the plywood over that. Carry a piece of plywood to one of the far corners of the attic and lay it on top of the installed boards.

Your plywood will be fine especially if you are paying attention to airtightness when you build your ceiling. You put the insulation down first and let s say you have 2x8s for your floor joists in the attic. This is probably the easiest method to install radiant barrier atticfoil is to lay the foil out over the existing insulation on the attic floor. Ensuring adequate insulation under the flooring.

Now in your particular part of the country you re going to want a lot more insulation than that. To make the job easier use a circular saw to cut the plywood sheet first into 2 2 8 strips which will be much easier to handle. The plywood should be perpendicular to the joists so that a signal sheet spans multiple. It s not a vapor barrier.

Most attics are dry plywood is a smart vapor retarder with variable permeance. That s clearly your plan if any moisture makes its way to the plywood the damp plywood will dry out on hot sunny days.