Energy Design Update
The least expensive available stair cover, the Battic Door. The Battic Door is a bottomless 13 1⁄2-inch deep cardboard box sized to cover standard pull-down attic stairs. Three sizes are available to fit 22”x54”, 25”x54” or 30″x54″ stairs. The Battic Door is shipped flat, in a 26”x51” package. Assembly is simple.
The Battic Door comes with a package of 3⁄4-inch wide foam weatherstripping to install at the perimeter of the stair jamb.
The Battic Door reduces exfiltration. To increase thermal resistance, a $99.50 “BEST kit” is available.
The Battic Door costs $29.50 – $99.50 plus shipping. Competing products cost over $200 and are not insulated to R-50. For weatherization contractors looking for an inexpensive way to cut down on exfiltration at attic stair openings, the Battic Door is worth considering.