How To Install Kraft Faced Insulation In Attic

Install batting between the roof rafters for finished attic spaces.

How to install kraft faced insulation in attic.

Check the insulation manufacturer s instructions for the necessary thickness of plastic. And that s what s going on when you attempt to hang faced fiberglass. 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. Unfold the mounting tab along each vertical edge of the batt.

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. When using insulation that has either paper or plastic facing. Place the insulation with the facing side down on a piece of scrap plywood.

I live in the sacramento valley area which gets very hot and dry in the summer doesn t get to cold in winter but foggy damp days in the 30 3 and 40 s. The insulation should be snug in the cavity but not compressed. Overlap the seams by about 12 inches and run the plastic up the walls at least 6 inches. Gently press the insulation between two studs with its moisture barrier facing out toward the room.

So i am not sure which way to install the new insulation. If you re installing additional insulation in an attic that s already insulated use unfaced insulation that doesn t have a vapor barrier. 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.

The energy efficiency of fiberglass insulation. Kraft faced insulation should be installed in exterior walls exterior basement walls and attic ceilings by pressing the product into the wall cavity with the paper side facing outward towards the installer. The basic installation steps are the same for walls ceilings floors and roofs in wood frame houses. 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.