I have a home circa 1971 with wiring running into the house through the garage room crawlspace.
There are several holes with wire running through them.
I notice that I can feel cool air from the house rushing into the garage roof space via these
holes in the spring/summer, and I presume cold air rushes into the house in Winter.
My question is: How can I plus these holes to help seal the house ? I'm got some Dow Enerfoam
(aka great stuff, I think). But I'm not sure that can be used around electical wires.
I guess my other option is to manually plug the holes with fiberglass.
What is the normally accepted solution ?
I think there is a photo attached. Note that one of the wires
appears a little frayed. Hence some of the concern.