How To Install Insulation In Attic Floor

You ll have to construct a wooden frame or sub floor with boards 16 inches apart to provide extra support for the floor.

How to install insulation in attic floor.

Whether using loose fill or batts put the vapor barrier closest to the warm side of your installation where hot moist air would get in facing the house s interior in cold climates beneath floor insulation and the attic s interior in hot climates on top of floor insulation. The insulation should fit snugly against the subfloor and between the joists. To install insulation batts and blankets. Attic insulation between roof trusses.

If using faced insulation keep the paper vapor retarder facing up and against the subfloor. Begin at a wall and work toward the center of the attic floor or the entryway carefully placing insulation between joists and ensuring a snug fit. Start at one edge of the crawlspace and install the insulation between the floor joists. If using insulation with a vapor retardant facing install the material with the vapor retardant side down.

1 put on work gloves safety glasses and a dust mask before entering the attic. Make sure each run contacts the insulation you installed at the header band joists. However if you keep the storage weight to a minimum you may be able to build a storage platform above the insulation by attaching supporting beams to the sides of the trusses. First you ll need to measure the area you want to floor so you can calculate how much wood you ll require.

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. Even easier you can also use a prefabricated attic floor kit designed specifically to raise the attic floor above the insulation. To floor an attic you ll need to install a sub floor for support before laying your plywood floor.