Answer by Jim Stewart for Attic Fan Box Vapor Barrier
A penetration of this barrier is not of concern. Forget about it. It is probably not a vapor barrier, but is there to keep the blown in insulation from working its way into the box and around the...
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Attic Fan Box Vapor Barrier
This past weekend I installed a ceiling fan to replace an already existing light fixture. I had to replace the plastic electrical box from when the home was built in 1992.I am unable to get into the...
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