The walls of the assembly also act as a dam to retain blown in insulation in the attic.
Air tight attic access.
Or they rarely connect the cold drafts on the first floor of the house with the attic access upstairs.
Often attic accesses are no more than a piece of painted plywood on a couple of cleats.
The finish panel visible from below does not have to be airtight.
Most homeowners and builders don t recognize how much conditioned air escapes through an attic access.
Purchase some 2 4 interior door jamb stock from your local building supply centre or any shop that supplies.
Tim healey the attic access provides a portal to the attic space while being integral to the red line air barrier.
The finish panel visible from below does not have to be airtight.
You ll notice in the photo below that interior door jamb stock does not have any kind of weather stripping in.
The access is in the ceiling probably in a closet and no one notices the draft.
Photos by steve baczek.
The walls of the assembly also act as a dam to retain blown in insulation in the attic.