Insulation type

What is this type of insulation called?



83906 Parma 017 (Small).jpg

83906 Parma 016 (Small).jpg



Is this type sprayed & expands and how long has it been around?



It might be polystyrene [spray] foam,or Worst scenario [UFFI] UREA FORMALDEHYDE FOAM INSULATION was banned here in Canada 1980 health concerns [off gassing].

Polyisocynate or Icynene

Does not look like UFFI.

It Looks like it could be UFFI thats has been chipped apart .
As a bit more Information there is nothing wrong with UFFI and there was a Concern about it in the early 1980s. .

I do expect we will find that Fibre Glass is more of a concern then UFFI ever was . Time will tell .
Roy Cooke

EXACTLY. There is a Johns-Manville product callad “Fesco Foam” where they sandwich this between a fesco board and a layer of felt paper and use it as flat roof insulation. It’s like the “Great Stuff” you get in a can to fill voids.

Why does it appear to have shrunken from the joist of the left?

Polyisocynate or Icynene are open cell are they not and remain flexible.

Icynene supposedly doesn’t shrink----looks more like Urea-Formaldahyde to me. Also Icynene hasn’t been around long enough to look that old.

I still believe that it is a Polyisocyanate.

I have UFFI in my own home and it does not look like this.

Any UFFI I have seen looks cloese enough to Polyisocynate not to be able to tell the differance from a photo like the one provided. When squeezed however UFFI does not spring back as much as Polyisocynate. But that may be due the age differance of the two.

2 questions how old is the house and is that a vent (kitchen or bath) exhausting into the attic?


The K&T is a clue.

At any rate the insulation whatever it is, is not original

UFFI Disintegrates to Dust.

Poly generally remains substantive upon contact / disruption

Thats why I asked.

Until Icynene is 'cut-off" flush it looks like this picture----UFFI doesn’t look like this when it is installed.