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  1. #1
    Join Date
    May 2008

    Default Insulation wiring holes

    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.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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