Hello - we recently purchased a house in Nova Scotia and the vapor barrier in the attic crawlspace isn't sealed. It seems as if it wasn't quite wide enough, so the top edge isn't sealed in any way. I'd like to run a second strip to seal it and I wanted to confirm my plan.
My thinking was that I'd use blue tuck tape to attach the new strip to the existing vapor barrier, and then run boards between the studs along the length of the crawlspace and seal the other side of the barrier to that board with acoustic sealant. Without running the boards, I'm not sure what I would seal it to (which is why I assume it wasn't sealed in the first place). Does that seem reasonable? I've never worked with vapor barrier before.
Also, the bottom edge of the existing vapor barrier is sealed just by stapling it to the wood. Is that OK, or should I pull that off and use acoustic sealant there as well? The house stays warm, but we've noticed some drafts around the crawlspace.
I've attached pics of the top and bottom edges. Thanks!