Vapor Barrier – Why not a wall service Cavity?
I’ve read a lot of discussions on this forum about the ideal wall layout but most discussion don’t include a service cavity in the wall. I know there’s a small cost involved and you lose ~4inches of floor space but surely a service cavity means that the vapor barrier will be better protected over the 50+ lifespan that people are trying to build to.
Some of the comments on the articles talking about service cavities talk about how the ‘other’ trades love to work with them and they must offer benefits longer term — say adding new cabling throughout a house lighting etc.
I’m about to tear down several room to their studs, to remove breaking plaster and add insulation, and I’m wondering if there’s a downside?
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