old spray in insulation?

Reply

  #1  
Old 10-09-08, 11:51 AM
Member
Thread Starter
Join Date: Jan 2008
Posts: 12
old spray in insulation?

My house was built in approx 1940. Recently while doing some electrical work, I was surprised at the insulation I found in the exterior walls. It is a yellow foam material that is very fragile and crumbles easily. One on hand I was pleasantly surprised to find any insulation at all, on the other I am wondering if its making any real deference with its condition.

Anybody had a run in with this stuff or know anything about it?

I was only opening up small holes but what I found from the inside out was: 3/4 in combo of plaster on gypsum board, 1 in wood, yellow foam insulation, 1/2 in board sheathing.
 
Sponsored Links
  #2  
Old 10-09-08, 06:00 PM
GregH's Avatar
Super Moderator
Join Date: Jan 2001
Location: Manitoba
Posts: 9,720
It is most likely Urea Formaldehyde insulation.
It enjoyed a short popularity in the early 70's but its use ended when health problems from off-gassing Formaldehyde were becoming common.

If it is UFFI you will not have any problems with gassing after all this time and if it is brittle and crumbling it would have lost most of its insulating properties.

http://www.cmhc-schl.gc.ca/en/co/mah...inaiqu_008.cfm
http://www.cbc.ca/consumers/market/files/home/uffi/
http://www.allaroundthehouse.com/lib.stu.u1.htm
 
Reply

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
Display Modes