Liquid Applied vs. Sheet WRB
I am trying to decide on the best weather barrier to use on my house, and would like to hear some opinions on liquid applied WRBs. I am looking at Henry Air-Bloc, for example. I am inclined to think that a liquid applied weather barrier would be more effective than a housewrap like Tyvek, but can’t seem to find confirmation one way or the other.
I am hoping to use this external layer as my primary air barrier, so it is critical that it be as effective as possible.
I have looked at pricing for liquid applied vs. wraps, and it seems to be a huge difference – a multiple of around 5x the cost for liquid applied vs. wrap. Is this accurate, or did I just find some bad data online? Further, is the extra cost for a liquid applied WRB worth it? Are they easier to get right, more effective, more durable, etc? Any and all thoughts would be appreciated!
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