Faced Batt Insulation In Attic

Faced insulation has flanges on the outside of the batt that need to be stapled to the wall studs and joists.

Faced batt insulation in attic.

Unfaced insulation when adding more insulation to an attic that already has insulation use unfaced insulation. This material may be kraft paper foil plastic or vinyl. Roll insulation is best for floors ceilings and roofs with a long joist or rafter bays and for tall walls. While wearing dust mask and gloves carry r 38 batts of unfaced fiberglass insulation into the attic.

Kraft paper facing is by far the most common type of vapor barrier you can find pre attached to blanket insulation intended for installation in homes. All kraft faced insulation is easy to cut with a sharp utility knife or insulation knife. This will lead to non uniform r values. As a result of evaporation people breathing and plant respiration air carries some.

Kraft faced or paper faced insulation comes in batts and long rolls. Faced insulation has a sheet of material attached to one side. The batts are precut to fit into cavities on standard 8 foot high walls. Once installed and expanded to the uniform manufactured thickness batts offer a known r factor.

The r factor of blown in fiberglass is usually 2 3 to 2 8 per inch of material. Unfinished or uninsulated attics need a layer of protection against air migration. What is the right insulation for an attic. Guardian r 13 kraft faced fiberglass insulation batt 15 x 93 106 6 sq.

8 bags model k91 view the owens corning attic insulation. Here s what you need to know about the facing on attic insulation. The facing should aim down toward the living space. Blown in insulation thickness can vary in an attic space.

Place a new layer of unfaced batts perpendicular to the old layer to cover any gaps in the lower layer. Always use unfaced batts both when laying product for the first time and to prevent moisture from becoming trapped between new and old layers of insulation. Lay the batts across the ceiling joists covering the existing insulation. That s how the barrier is made effective.

The same is true for an attic floor. Creating a moisture barrier.