Air Sealing Details For Attic Hatch

Weatherstrip the attic access hatch or 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. Gaskets are generally more durable and produce a tighter seal.

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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.

The standard air sealing recommendation is to install a compression bulb weatherstrip. 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.

If your hatch rests directly on the moldings add 2 1 2 inch wide stops around the opening. Seal the attic access. Apply self adhesive foam weatherstrip tape to the top edge of the stop. Sealing the attic hatch or door finish up by sealing the access hatch with self sticking weather stripping.

Air seal the hatch perimeter the plywood hatch rests on a small wood strip lip.

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