Seal Attic Hatch

2 thick foam board 4 8 sheet with an r value of 10 or greater 15 foam weather stripping the wider the better 1 can great stuff foam or similar 1 tube liquid nail or other construction adhesive 8 16 penny nails misc.

Seal attic hatch.

Once you have the materials you can begin to seal and insulate the knee wall access door through these steps. The insulation will both slow heat loss and add ballast to the hatch to improve the seal at the weatherstripping. Pray that the installer used finish nails and not say ring shank nails. How to insulate and air seal an attic access hatch.

Hardware 2 small bungee cords to seal it tight. From inside the attic check for any openings holes or fenestrations into the knee wall surrounding area. If your hatch rests directly on the moldings add 2 1 2 inch wide stops around the opening. Air seal the trim the first step is air sealing the finish trim and enclosure around the attic hatch.

Diy sealing the attic hatch seal trim to ceiling create air tight seal between hatch and trim. Carefully pull down the finish trim. Remove your existing attic hatch and measure its size. The stops provide a wider surface for attaching the weatherstrip and a space to mount hook and eye fasteners.