How To Install Kraft Faced Insulation In Attic

So i am not sure which way to install the new insulation.

How to install kraft faced insulation in attic.

Set a t square or metal straightedge over the insulation and press it down firmly. Cut the insulation roll or batt to fit the length of the framing cavity if necessary. If you re installing additional insulation in an attic that s already insulated use unfaced insulation that doesn t have a vapor barrier. Overlap the seams by about 12 inches and run the plastic up the walls at least 6 inches.

Install batting between the roof rafters for finished attic spaces. I have install new insulation becasue of a valve leak got the old stuff wet. So if you re installing insulation in an attic that doesn t have any used faced insulation and put the paper side down toward the ceiling. You can use either faced or unfaced batting for this installation.

Tape the plastic to the walls and seal the seams with tape or hold them in place with lumber or rocks. The basic installation steps are the same for walls ceilings floors and roofs in wood frame houses. Flatten the tabs against the front edge of the stud on each side. Just buy un faced batts install them to grade 1 and build your air and moisture control systems in another layer big separate discussion.

And that s what s going on when you attempt to hang faced fiberglass. When using insulation that has either paper or plastic facing. Place the insulation with the facing side down on a piece of scrap plywood. Check the insulation manufacturer s instructions for the necessary thickness of plastic.

The damn facing obscures your work slowing down the installation and resulting in a poor insulation grade. Unfold the mounting tab along each vertical edge of the batt. The insulation should be snug in the cavity but not compressed. Gently press the insulation between two studs with its moisture barrier facing out toward the room.

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