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