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There's a crawl space in my basement where the gas pipe to the stove goes through a hole in the ceiling. I think it might be a big enough hole for a mouse to get through so I'd like to stuff some steel wool in there, which has worked for me against mice before.

My concern is whether having steel wool against a gas pipe is anything to worry about. First, I'm in the US and am only assuming that pipe is steel, so I would think it's OK to do that but is there a reason I shouldn't?

The area is under cover, to the ground, but not insulated. Is rust of the wool a worry?

Rob
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By gas pipe, you mean the gasline--not the actual chimney, right? If so, that is likely steel pipe. It COULD be copper, but you'd be able to tell if that's the case. If it's a steel pipe, stainless steel wool should be fine to plug it.

DA01
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With black iron pipe that is normally used for gas pipe I would use spray foam insulation it will expand and fill the voids you won't be able to get to with the steel wool and it will stop air leaks and not rust away even slightly below grade it will seal better and longer than steel wool

Ed beal
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