Diy attic stair cover materials to build the attic stair cover i decided to use two inch thick foil faced foam board by dow tuff r.
Diy attic stair insulation cover.
Last spring i built 2 attic stair covers and monitored the results.
Cut sides and top from sheets of 3 4 foam board with a utility knife.
That means that you should glue at least 4 inches of foil faced polyisocyanurate r 26 to the box.
Assemble the sides of the box with metallic duct tape.
Folding attic stairs unlike your ceiling does not have any insulation.
To insulate fold down attic stairs.
The tuff r has an r value of 13 for 2 inches and a foil facing which works great as a radiant heat barrier as well.
Measure the size and height of the stairs from the attic.
Start by measuring the dimensions of the opening.
Using a utility knife with a straight edge as a guide cut strips from the sheet of foam to form the sides of the box.
Because of this heat is transferred between the attic and your living space.
With attic insulation we aim for a pretty high standard usually at least r 49 and the coffin insulation should match.
More insulation 6 inches or 8 inches isn t uncommon.
Be sure to use foil tape since regular duct tape won t hold up to the heat in the attic.
In short my living space was on the average 12 degrees f cooler then without the attic stair covers your results will differ.
The foil faced insulation board is also really easy to connect to other pieces using foil tape.
And the height the stairs protrude above the attic floor.
Seal the insulation box by running foil tape along where its outer edges meet the surface of your attic floor.