Cut sides and top from sheets of 3 4 foam board with a utility knife.
Attic stair insulation box.
To insulate fold down attic stairs.
More insulation 6 inches or 8 inches isn t uncommon.
Position the box over the stair opening in the attic.
Insulator is comprised of a durable pink fiberglas insulation and tough highly reflective foil.
Measure the size and height of the stairs from the attic.
The box should rest squarely on top of the attic stairs frame or on wood stops installed to support it.
Product comes fully assembled and is easy to install and remove.
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.
Add insulation to the exterior of the plywood box.
That means that you should glue at least 4 inches of foil faced polyisocyanurate r 26 to the box.
Available in 1 standard size to fit most attic stairwell openings product is designed to cover access points up to 25 1 2 in.
Assemble the sides of the box with metallic duct tape.
The box is hinged on one side which makes.
Attach the blanket insulation and wrap it.
Attach the foam box to the floor with metallic tape.