How to seal knee wall doors.
How to seal attic access hatch.
Carefully pull down the finish trim.
The insulation will both slow heat loss and add ballast to the hatch to improve the seal at the weatherstripping.
Remove your existing attic hatch and measure its size.
Weatherstrip the attic access hatch or door.
Apply self adhesive foam weatherstrip tape to the top edge of the stop.
Cut four pieces of polystyrene rigid insulation about 1 2 inch smaller than the dimensions of the hatch.
Seal the attic access.
How to insulate and air seal an attic access hatch.
Use spray foam to air seal these.
Sealing the attic hatch or door finish up by sealing the access hatch with self sticking weather stripping.
Apply weather stripping to the door to create a seal.
From inside the attic check for any openings holes or fenestrations into the knee wall surrounding area.
Affix foam insulation to.
The stops provide a wider surface for attaching the weatherstrip and a space to mount hook and eye fasteners.
The latch should lay flush against the frame.
If your hatch rests directly on the moldings add 2 1 2 inch wide stops around the opening.