How To Add Batt Insulation To Attic

You can add loose fill on top of fiberglass batts or blankets and vice.

How to add batt insulation to attic.

Multiply the number of inches of insulation by the r value per inch. To install fiberglass batts over existing insulation lay the batts perpendicular to the joists so they do not compress the insulation below. The vapor retarder on top of or between layers of insulation can trap moisture. Add the right kind of insulation.

Any existing batt or roll insulation in the attic should have the facing against the attic drywall floor or no facing at all. Pull down stair or ladder. Affix rigid foam insulation to the attic side of the hatch or door. According to the u s.

Attic hatch or door. The recommended level for most attics is to insulate to r 38 or about 10 to 14 inches depending on insulation type. When adding additional insulation you do not have to use the same type of insulation that currently exists in your attic. Add weatherstripping around the perimeter and a sweep to the door of a walk up attic.

Batt or rolled insulation or blown loose fill insulation fiberglass or cellulose can be installed on top of old insulation.