Vapor barrier when finishing an attic

Hello all, I'm in the middle of finishing my attic, approximately 250 sq ft as framed. I'm in the Chicago land area and I'm thinking about the need for a vapor barrier between the insulation and the drywall. The exposed area below the angled walls (left 4 ft, right 3ft) is insulated, but will not be drywalled. We have vent chutes in every bay between the soffit and the upper unfinished part ("new attic") and the roof is well ventilated. If needed, why and what's the best way given the layout? submitted by /u/LeDeau [link] [comments]

Mar 17, 2025 - 23:35
 0
Vapor barrier when finishing an attic
Vapor barrier when finishing an attic

Hello all, I'm in the middle of finishing my attic, approximately 250 sq ft as framed.

I'm in the Chicago land area and I'm thinking about the need for a vapor barrier between the insulation and the drywall. The exposed area below the angled walls (left 4 ft, right 3ft) is insulated, but will not be drywalled. We have vent chutes in every bay between the soffit and the upper unfinished part ("new attic") and the roof is well ventilated.

If needed, why and what's the best way given the layout?

submitted by /u/LeDeau
[link] [comments]