Disintegrating Foam

[caryseidner]

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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[Bill Kibbel]

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.

[caryseidner]

Thanks (again) Bill. It does look like fur or hair in the photo. There was a paper or moisture barrier on the backside of it. Looked like some old and deteriorated form of batt insulation.

[Les]

UFFI and it has been that way since it was installed. After a while in the field you get to know the different types of foam(s) and their characteristics.