To insulate fold down attic stairs.
Attic stair insulation box.
Position the box over the stair opening in the attic.
Cut sides and top from sheets of 3 4 foam board with a utility knife.
Add insulation to the exterior of the plywood box.
Product comes fully assembled and is easy to install and remove.
Assemble the sides of the box with metallic duct tape.
Measure the size and height of the stairs from the attic.
That means that you should glue at least 4 inches of foil faced polyisocyanurate r 26 to the box.
Attach the blanket insulation and wrap it.
Attach the foam box to the floor with metallic tape.
Available in 1 standard size to fit most attic stairwell openings product is designed to cover access points up to 25 1 2 in.
The box should rest squarely on top of the attic stairs frame or on wood stops installed to support it.
More insulation 6 inches or 8 inches isn t uncommon.
An attic insulation box covers the attic ladder with insulation which stops the flow of air into your house and eliminates any drafts around the opening.
Attach the blanket insulation to the attic side of the cover box with adhesive and wrap it with building wrap or other air barrier to prevent air movement in the insulation from degrading its r value.
The box is hinged on one side which makes.