An attic stair cover provides an air seal reducing the air leaks.
Build attic stair insulation box.
The box should rest squarely on top of the attic stairs frame or on wood stops installed to.
Position the box over the stair opening in the attic.
Insulated attic stair cover box.
The shield holds the insulation to the box.
More insulation 6 inches or 8 inches isn t uncommon.
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.
Whole house fans and ac returns.
Additional insulation not included may be added to the sides or insulate the attic up to the sides of the stair cover kit.
Hinge the lid to the box on one side with metallic tape.
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.
Attach the foam box to the floor with metallic tape.
Measure the size and height of the stairs from the attic.
Much like attic stairs above when whole house fans are installed.
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.
Assemble the sides of the box with metallic duct tape.
An easy low cost solution to this problem is to add an attic stair cover.
Installs easily without tools.
That means that you should glue at least 4 inches of foil faced polyisocyanurate r 26 to the box.
Finally i made the main insulated attic stair box cover.
Cut sides and top from sheets of 3 4 foam board with a utility knife.
Insert the insulation into the reflective shield and place the stair cover rigid box into the reflective shield covering the insulation.
I made the box wider than the custom piece so it would fit over the first box.
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.
With attic insulation we aim for a pretty high standard usually at least r 49 and the coffin insulation should match.
4 attach the blanket insulation and wrap it.