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> But in general, I agree there's a responsibility gap when it comes to these installers. I think the best practical solution for now is to factor into such pro
by buttcoinslol 8y ago
> But in general, I agree there's a responsibility gap when it comes to these installers. I think the best practical solution for now is to factor into such projects the cost of restoring a building's thermal envelope.
What, $5 for a tube of exterior grade caulk? Vapor barrier seal tape is 10 cents a foot. Add in $10 in labor per penetration and you're done.
You could leave it out of your estimate entirely and not even notice if your guys did the work.
edit: I'm a commericial construction estimator
- LgWoodenBadger 8y agoIf the drill snagged the fiberglass and spun and compressed it creating a large void, it's certainly going to be much more than caulk and tape to repair and restore.
- DoofusOfDeath 8y agoRight. In my case the strip of fiberglass batt was basically flopped over in that section. (It's a double-framed wall, so there was space for the batt to fall away from the outer wall.)
- DoofusOfDeath 8y agoMaybe I used the term "thermal envelope" too loosely? I agree that restoring an air seal is trivial on a per-hole basis. My main point was restoring the lost insulation performance that comes from trashing one stud cavity of fiberglass batt insulation when the hole is made. Based on my limited knowledge, I don't know what impact that might have on the overall structure's thermal efficiency. I would also worry about risk to any water-carrying pipes running through such a section in a cold climate.