Two plastic electrical boxes made by
R&S Vapour Seal Systems and Nu-tek
Plastics, may simplify sealing around
electrical outlets and ceiling boxes.
The R&S Vapour Seal System is
designed for sealing the electrical box
to a plastic vapor barrier. The vapor
barrier can be run right across the face
of these boxes and X-cut inside each
box. A plastic ring is then slipped over
the box face and snapped into place
against a small flange. A piece of
closed-cell foam covers each of the
power line openings to help seal the
cable penetration. The manufacturer
recommends stripping the cable back
about an inch and stabbing the wires
through, rather than slitting the foam.
These boxes also have two