Hello:
I have a 30 year old ranch house in New Jersey. I'm planning on continuing the previously started task of sealing all opensing from the living spaces into the attic for air infiltration.
I understand about caulking/sealing all wires, pipes and such. What I'm not clear on is how to seal the electrical boxes that my ceiling fans are mounted to?
I have a ceiling mounted fans or light fixtures in most of the rooms around the house, and there are gaps around the boxes. I know I can caulk/foam these gaps but what about all the individual holes in the boxes themselves? The boxes are a mix of metal and plastic boxes.
Can I lay some poly sheet over the box and lay the insulation over/around it? I hesitate to do this because at least 2 of the fixtures are mounted directly to the boxes (not ceiling fans or pendant lights) and there might be heat build up.
I see a lot of discussion on this subject for sidewall application, but very little for ceilings.
Any help would be appreciated.
Jim