Replies

1. 
   experienced | Nov 19, 2005 05:37pm | #1

   Some  one on a similar thread in the ENERGY section said that one of the contractors that does spray on foam recommended against the wall foam!! I'm an old style insulator and still think cellulose is the best insulation based on cost and payback- this is what you insulate for!!

2. 
   1toolman | Nov 19, 2005 06:03pm | #2

   Check out the folowing links for some demo videos

   http://www.tigerfoam.com/video.php

    

   http://www.foampower.com/howto/insulate_wall_cav.html

   There was a better site with a very good video, but I can't find it now.

   I love foam.  It seal off moisture preventing mold growth.  I didn't do my ways, but my etire roof is insulated with urethane foam and I love it.  But since my rafters are not covered (2x4's) I still see the lines from the rafters after a light snow.  But the upstairs is always toasty.

   Tim

   You buy a cheap tool twice and then you're still stuck with a cheap tool!
3. 
   chrisl | Nov 19, 2005 06:23pm | #3

   The foam guy I talked to said that 50 year old plaster (my house was built in '57) isn't strong enough for even the low expansion foam. I would get cracking or worse. Also, in my case, there's only a 3/4" space between the masonry walls and the inside of the plaster, so not much space to fill.

   I ended up tearing out the plaster on my exterior walls and putting up 2" poly iso, then furring strips and drywall. Gets me closer to R19 than the R5 or so I had.

   Chris.