Build Attic Stair Insulation Box

Assemble the sides of the box with metallic duct tape.

Build attic stair insulation box.

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. With attic insulation we aim for a pretty high standard usually at least r 49 and the coffin insulation should match. 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.

Cut sides and top from sheets of 3 4 foam board with a utility knife. The box should rest squarely on top of the attic stairs frame or on wood stops installed to. Attach the foam box to the floor with metallic tape. I made the box wider than the custom piece so it would fit over the first box.

Position the box over the stair opening in the attic. Installs easily without tools. Measure the size and height of the stairs from the attic. Add the desired amount of insulation over the cover to restore the insulation removed from the ceiling.

I also made the box wider and longer than the attic stair opening so that i could install weather stripping on the bottom to create a tight seal. More insulation 6 inches or 8 inches isn t uncommon. Add insulation to the exterior of the plywood box. An easy low cost solution to this problem is to add an attic stair cover.

Attic stairs insulation cover for pull down stair 25 x 54 x 11 r value 15 3 extra thick fire proof attic cover stairway insulator with easy installation attic stairway cover 4 7 out of 5 stars 146. 4 attach the blanket insulation and wrap it. The shield holds the insulation to the box. Whole house fans and ac returns.

An attic stair cover provides an air seal reducing the air leaks. Insert the insulation into the reflective shield and place the stair cover rigid box into the reflective shield covering the insulation. Additional insulation not included may be added to the sides or insulate the attic up to the sides of the stair cover kit. Insulated attic stair cover box.

Much like attic stairs above when whole house fans are installed.