Plywood In Attic Over Insulation

Ensuring adequate insulation under the flooring to give yourself enough space to ensure adequate insulation under the flooring construct a riser of 2 x 4 s in the attic over the existing joists.

Plywood in attic over insulation.

Wear long sleeves and pants since fiberglass insulation irritates. What you could do is you could put insulation down in the floor joist first then plywood over it and then you could add another layer of unfaced on top of that. It s not a vapor barrier. How to lay attic flooring on top of fiberglass insulation.

If you can do it there really are no down sides except the. Make sure you don t block the air flow from the soffits. If you lay plywood and it squishes and compacts your. If necessary block around them with plywood or corrugated cardboard to prevent the insulation from piling up on the vent.

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. Before you lay your plywood onto the joists check to see if your insulation is couple of inches above the height of the joists. But you know i would rather see you just sort of map out the area in the center of the attic that you re going to use for storage and fill up the rest with insulation because that s the way you re going to get the most energy efficiency.

Put on work gloves safety glasses and a dust mask before entering the attic. Your plywood will be fine especially if you are paying attention to airtightness when you build your ceiling. In most houses getting a 4 by 8 sheet of plywood into the attic is nearly impossible without cutting a bigger hole in the ceiling.