Insulation type

[David C. Macy]

What is this type of insulation called?


Thanks

Dave

[Joseph Hagarty, CMI]

Polyisocyanate

[David C. Macy]

Joe

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

Thanks

[Mario A. Kyriacou, CHI]

David

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

[Joseph Hagarty, CMI]

Polyisocynate or Icynene http://www.icynene.com/Products.aspx

http://nachi.org/forum/showthread.php?t=5062

[Joseph Hagarty, CMI]

Does not look like UFFI.

[Roy D. Cooke, Sr]

Originally Posted by mkyriacou

David

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

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.
http://www.cmhc-schl.gc.ca/en/co/mah...inaiqu_008.cfm

http://www.carsondunlop.com/OBS/uffi.html .

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

[ldapkus]

Originally Posted by jhagarty

Polyisocyanate

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.

[phinsperger]

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.

[cbuell]

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

[Joseph Hagarty, CMI]

I still believe that it is a Polyisocyanate.

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

[phinsperger]

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.

[kkenny]

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

kevin

[phinsperger]

The K&T is a clue.

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

[Joseph Hagarty, CMI]

Originally Posted by phinsperger

....When squeezed however UFFI does not spring back as much as Polyisocynate...

UFFI Disintegrates to Dust.

Poly generally remains substantive upon contact / disruption