Insulate Indoor Attic Access

The access door is in our closet which is fine except the fact that the crawl space has very little insulation and neither does the door.

Insulate indoor attic access.

Cut out two pieces of rigid foam board that are 1 4 inch smaller than the hatch so homeowners can slide the attic access panel open easily. With attic insulation we aim for a pretty high standard usually at least r 49 and the coffin insulation should match. Staple long pieces of duct tape sticky side up onto the attic scuttle door. Then add insulation batting to form a pillow and wrap it up like a birthday present as shown.

First install foam weather stripping on the inside of the trim or directly onto the hatch. The rule here is simple. That means that you should glue at least 4 inches of foil faced polyisocyanurate r 26 to the box. For air to move there must a path hole in the ceiling crack in the drywall poorly sealed attic scuttle etc and a difference in pressure.

Add insulation to the exterior of the plywood box. More insulation 6 inches or 8 inches isn t uncommon. Plan to pull up the flooring and layer new insulation on top of the old. Most insulation i find in the attic of homes is air permeable air can travel through it.

But if the floor is covered in plywood you can t stuff enough insulation beneath it to do the job sufficiently not even in warm climates. Add foam insulation tape around the edges to seal the perimeter where it rests in the access hole. Here s one good method. Because the simplest and cheapest way to insulate an attic is to add material to the floor.