Air Sealing a Second Floor
I think this is super elementary, so forgive me.
I’m designing our retirement home in California’s high desert and have set the whole “High Performance” thing in motion…which has been no easy thing with the resistance to new stuff I’m finding up there. So I’ve kind of been leading the way in terms of external insulation, air sealing, etc.
But one simple principle I can’t quite get my head around. I can see air sealing the outside of the building. I understand too the value of putting a 2x or OSB gusset on the top plate to allow you to turn the corner on the first floor ceiling with your smart vapor retarder.
But how does one deal with the second floor? Do you simply air-seal it independently? sealing it’s own outside wall and ceiling? It seems like you’d want to somehow seal the entire outer wall in a single monolithic way.
I know there’s something I’m missing…and I always appreciate when you guys come back with links to articles. If anyone can educate me on the piece I’m missing, I would truly appreciate it!
Yucca Valley CA
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