Airtight electrical boxes in masonry house?
davorradman
| Posted in General Questions on
Do I need to use airtight electrical boxes on a masonry/concrete house?
Cement plaster will be my interior airtight layer, but people are telling me that wall itself is airtight enough not to warrant the search for airtight electrical boxes.
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Replies
Davor,
I'm guessing that you don't need airtight electrical boxes. But it would be helpful if you described the type of insulation you are using, and its location.
-- Martin Holladay
Insulation is exterior EPS 8-10in.
Davor,
You'll be fine with ordinary electrical boxes. Potential air leak locations include penetrations through the wall (electrical cable entrance location, electrical cable to outdoor outlets and outdoor light fixtures, plumbing penetrations to hose bibs, etc.) and the crack between the wall air barrier (probably your interior plaster) and the ceiling air barrier.
-- Martin Holladay
Thanks Martin!
One less detail to worry about :)