You can purchase pre cut attic door insulation material at your local home improvement store or online.
How to insulate attic hatch with sliding stiar.
Attach foam tape weather stripping to the top edge of the box to form a tighter seal.
Add insulation to the exterior of the plywood box.
Apply a bead of foam compatible glue to it and attach it to the plywood hatch.
Foil faced polyiso is the greenest and best performing of the rigid foam options.
Since the weather is getting colder by the day up here in the northern hemisphere i had to qu.
Cut a piece of foam the size of the exterior dimensions of the box for the lid.
Insulate the hatch cut foam board to 1 2รข less than the size of the hatch on each side.
If you have pull down attic stairs or an attic door these should be sealed in a similar manner.
Attach the two layers of foam board together and apply them to the hatch.
Install fiberglass batt insulation on top of the foam board.
With attic insulation we aim for a pretty high standard usually at least r 49 and the coffin insulation should match.
Measure the insulation a bit bigger than the hatch so it creates a seal when shut.
Add fiberglass or rigid foam board to back of hatch.
Affix the fiberglass batt insulation to the top of the foam board.
This video will show you the best way to insulate your pull down attic stairs.
More insulation 6 inches or 8 inches isn t uncommon.
This ible is about how to build an insulated attic hatch for cheap i am currently renovating an old building to turn it into a multi flat rental property.
That means that you should glue at least 4 inches of foil faced polyisocyanurate r 26 to the box.
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.
Clean the floor around the attic stairs so the tape will adhere well.
Attach the pieces of foam board to themselves and then attach them to the hatch.
After you have replaced the weatherstripping you ll want to cut a piece of fiberglass or rigid foam board to size and nail or glue it on the back of the hatch door.
Cut two pieces of foam board that are about 1 4 smaller than the hatch.
Tape the lid to the top of the box along one of the long edges with foil tape.