Insulation Under Attic Floor

Insulation Under Attic Floor. This of course would preclude using the area for. Without removing the flooring you have the option of blowing loose-fill insulation fiberglass or cellulose fiber over the top of the floor.

If you decide on mineral wool such as glass wool or rock wool you will need to put down a damp proof membrane. Standard joist spacing for the installation of attic flooring materials is 16 inches on center OC meaning the distance from the center of one joist to the center of the next joist is 16 inches. Fiberglass batts blown-in fiberglass and cellulose.

There are two commonly known ways of insulating an attic using batts commonly fiberglass or loose fill material commonly cellulose.

6499 on Home Depot. Insulate the attic floor if possible Whenever possible do insulate the attic floor underneath the subfloor and final flooring materials. The insulation fiberglass or cellulose is then placed on top of the drywall with no vapor barrier above or below. The worst choice is fiberglass batts.