March 2, 2011 at 7:39 pm
#21998
imported_dapqam
Participant
This year I took the “foam layer behind the switchplate covers” to a whole new level and it has made a big difference. I bought a can of the foam insulation with the extended nozzle and sprayed foam inside the back of the electric boxes where the electric line comes through the box. This really reduces the amount of air infiltrating through the boxes. It takes pulling the electrical plug out in order to get access so I would recommend switching off the power at the main box (usually a breaker in the basement).