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