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I was told I needed to put insulating foam in the holes in the top plate created for electrical wiring...?
Do I need to put the foam in the studs where the electrical wiring goes through? This is for Fire codes in MN...
Answer:
This isn't a fire code, but an energy code. It is to prevent drafts, and is around all holes, not just wiring (like plumbing etc). Expanding polyurethane foam is usually used for that. It should say on the can that it is not harmful to the wiring and PVC pipes etc. It doesn't need any kind of fire rating.
I assumed you are talking about a house.
I am in Minnesota, and I know that this is an energy code thing and not a fire code thing for houses in Minnesota.
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