Plywood In Attic Over Insulation

If you can do it there really are no down sides except the.

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. Walk to one end of the attic by carefully stepping only on the wooden ceiling joists. Your plywood will be fine especially if you are paying attention to airtightness when you build your ceiling. 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.

Leaving part at r 19 is fine the rest will still be beneficial. Wear long sleeves and pants since fiberglass insulation irritates. Make sure you don t block the air flow from the soffits. Most attics are dry plywood is a smart vapor retarder with variable permeance.

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. How to lay attic flooring on top of fiberglass insulation. Before you lay your plywood onto the joists check to see if your insulation is couple of inches above the height of the joists. If you lay plywood and it squishes and compacts your.

It s not a vapor barrier. Put on work gloves safety glasses and a dust mask before entering the attic. If necessary block around them with plywood or corrugated cardboard to prevent the insulation from piling up on the vent.