I have a heated attic with Icynene insulation (R30) on the underside of the roof. The floor is not insulated. This attic is separated by a 2’ x 6’ wall from an unheated storage space above the garage. I need to separate the two areas with a door 33†wide x 46†high and insulate with Icynene to R19. I need suggestions on construction method and gaskets for a tight seal.
Can anyone help?
Replies
How often will the door be used?
Everything will be okay in the end. If it's not okay, it's not the end.
Only to service the AC unit...perhaps 1x or 2x per year.
Whoops! more questions. Is it living space / have to be pretty? You need to get R19 in the door or just the talking about wall ajacent? Want to go crazy or git 'er done?
Simple would be an insulated plug with weather striped flange all around, screwed on.
Pretty maybe a cut down door with weather seal kerfed jamb. Could put plug on other cold side, bungee pulling into jamb....a storm door of sorts.
Go crazy would be back to back doors in same jamb, opposite hinging so door knobs don't hit.
Go really crazy maybe one of those doors like on the Enterprise.....ssthreeeeepp! I assume they're insulated.
Hard part / weak link in all probably the sill.
Everything will be okay in the end. If it's not okay, it's not the end.
I bought an in swinging door from http://www.access-doors.net then cut a piece of 3/4" plywood into two pieces and glued them together to fit on the out swinging side and added hinges weatherstripping and catches. I glued 2" rigid insulation on to the outside of my plywood door and 1/2" piece of rigid to the back of the purchased door.
The location of the door was exposed so it needed to look good. The double door idea came from an article on attic access doors in Fine Homebuilding. They said air infiltration was a bigger issue than insulation in access doors. You might search their site for the article.
Standard interior masonite hollow core door. Cut to needed height & re-rail the cut side.
Add 1" or better foam to unfinished side of door.
Build rabbited jamb w/Q-lon, or use applied stops w/Q-lon on flat jamb.
Standard hinges, cabinet knob, magnetic catch
Quick, cheap, clean.