Finished basement vapor barrier requirement

[Knuckle Dragger]

Hi All,

I am estimating wiring on a finished below grade poured concrete basement (circa 2010).

The exterior walls will be 2x4 with rolled fiberglass insulation.

My question is are vapor barrier boxes required on the exterior walls? I am assuming yes I just want to get your opinion.

Thank you.

 

[Dennis Alwon]

It depends on the states ruling. In NC it is only required if there is an outdoor receptacle in the same bay as an indoor one.

 

[Knuckle Dragger]

It depends on the states ruling. In NC it is only required if there is an outdoor receptacle in the same bay as an indoor one.

Thanks! I spoke with the AHJ today and he told me not to waist my money (my guess is he is not a big fan of the VBB).
He also told that it applies only to new work/ additions, not renovations.

I believe each AHJ in each town will have a different interpretation of the rule.
Thanks again for your input!