Cut 1 3 boards to fit the perimeter of the opening and nail them on with 6d finish nails.
Air sealing details for attic hatch.
Air seal the hatch perimeter the plywood hatch rests on a small wood strip lip.
Seal the attic access.
If your hatch rests directly on the moldings add 2 1 2 inch wide stops around the opening.
Instead of crunching the numbers as he did one just needs to walk by one in a hallway during the middle of summer to know it isn t insulated.
The stops provide a wider surface for attaching the weatherstrip and a space to mount hook and eye fasteners.
This can also be beefed up to a sealing gasket like the one on your refrigerator door.
In our ongoing series on air sealing we are going to focus on the dreaded attic hatch or as allison baile s of energy vanguard so eloquently calls it a mind blowing hole in your building envelope.
Weatherstrip the attic access hatch or door.
Apply self adhesive foam weatherstrip tape to the top edge of the stop.