How To Build Attic Stairs Insulation
Measure the size and height of the stairs from the attic.
How to build attic stairs insulation. Add insulation to the exterior of the plywood box. More insulation 6 inches or 8 inches isn t uncommon. Screw the unattached side of the piano hinge to the framing member. One way is to install 2 4 blocking behind the stringers.
That means that you should glue at least 4 inches of foil faced polyisocyanurate r 26 to the box. The edges of the box should be flush with the. Assemble the sides of the box with metallic duct tape. Position the newly constructed box over the attic stair opening.
To insulate fold down attic stairs. The stairs themselves also need to be insulated and the bottom of the stringers should be air sealed with airtight drywall. After cleaning and drying the opening of the stairs put the insulation box in place. With attic insulation we aim for a pretty high standard usually at least r 49 and the coffin insulation should match.
Seal the insulation box by running foil tape along where its outer edges meet the surface of your attic floor. Cut the r 19 insulation to the dimensions. With the hinge secured gently open and close the. Once the drywall is installed you can fill the gap with spray foam.
Attach the foam box to the. You may add caulk on top of the tape to reinforce your seal.