How To Seal A Attic Hatch

Wrap insulation in plastic.

How to seal a attic hatch.

Pre made insulated attic stair covers are also available from local home improvement centers or on the web. There are two issues that need to be addressed with the attic hatch. Create air tight seal between hatch and trim. If you have pull down attic stairs or an attic door these should be sealed in a similar manner.

To guarantee a good seal i paired sash locks with a gasket of foam weather stripping around the frame of the attic hatch. Near finished attic hatch. Plug the big holes first. Weatherstrip the edges and put a piece of rigid foam board insulation on the back of the door.

Apply a bead of caulk on the inside and outside edges of the trim and then reattach it. My apologies for the lack of photos but you can surely imagine how it works. Once you have the materials you can begin to seal and insulate the knee wall access door through these steps. From inside the attic check for any openings holes or fenestrations into the knee wall surrounding area.

The standard air sealing recommendation is to install a compression bulb weatherstrip. Fortunately you can easily air seal and insulate your attic hatch saving you energy and money. Long piece from a batt of unfaced fiberglass insulation and fold it at the bottom of a 13 gallon. Apply weather stripping to the door to create a seal.

Cut a piece of fiberglass or rigid foam board insulation the same size as the attic hatch and nail or glue it to the back of the hatch. Seal trim to ceiling. Air sealing involves two steps. Plug open stud cavities.

When the sash locks are rotated in use they form an air tight seal with the foam weatherstripping.