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Disintegrating Foam


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Can anyone tell me what this is? I found it at an exterior wall in a crawl space. I swiped my hand across it to try and figure out what it was, and it disintegrated in my hand. Insulation? Foam backing for retro waterproofing system? Sorry. I know the pics suck.

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I don't know what the stuff is that looks like hair or fur. It looks disgusting considering I just checked in here while taking a break and eating my lunch.

The foam is UFFI - urea-formaldehyde foam insulation. Since it hasn't been installed since 1980, it's out-gassed long ago and is no longer a concern.

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