How To Install Attic Floor Insulation

Make sure each run contacts the insulation you installed at the header band joists.

How to install attic floor insulation.

You will be limited to the depth of the cavities between the floor joists. Even easier you can also use a prefabricated attic floor kit designed specifically to raise the attic floor above the insulation. Plan to pull up the flooring and layer new. But if the floor is covered in plywood you can t stuff enough insulation beneath it to do the job sufficiently not even in warm climates.

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 storage you can install inch plywood or. You ll have to construct a wooden frame or sub floor with boards 16 inches apart to provide extra support for the floor. If your attic has a floor you may not be able to install enough insulation beneath it to attain an r 49 rating. Loftzone gives you a strong storage platform above even thick insulation in your attic.

If using faced insulation keep the paper vapor retarder facing up and against the subfloor. Start with the attic floor. Start at one edge of the crawlspace and install the insulation between the floor joists. Stop using your attic for storage.

Because the simplest and cheapest way to insulate an attic is to add material to the floor. In northeastern ohio it is recommended that attic insulation have an r value of 49. First you ll need to measure the area you want to floor so you can calculate how much wood you ll require. Install additional boards on all remaining joists in the entire attic.

The insulation should fit snugly against the subfloor and between the joists. To floor an attic you ll need to install a sub floor for support before laying your plywood floor. Watch this easy diy guide on how to fit an attic sub floor and boards.