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https://imgur.com/a/ppYpX3B

I'm wanting to replace my bathroom vanity but the amount of foam around the plumbing is making me nervous as I have no idea why it's there.

Is there something going on here that I need to be wary of? Or will I really not know until I remove it?

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  • What's going on with the water dripping from the hot supply line? Also, why is the cold supply line on the left side? Commented May 18 at 11:39

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It's a nothingburger. That is just cheap spray foam insulation (expanding... expanding more than the person installing it thought).

It was put there to keep insects/rodents out or to gain a little r-value. Just slice it out with a utility knife. It will come off in chunks once you get going. Then do whatever you need.

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