On Sun, 11 Sep 2011 14:15:24 -0500, "Lloyd E. Sponenburgh"
lloydspinsidemindspring.com wrote:


A google search for spray foam insulation will turn up a list of
companies selling the stuff, there are some options for slow rise (for
filling walls), fire retardant, and I saw one anti-microbial. For the
standard stuff prices seem to be $565-600 for a kit to do 600 board
feet (600 square feet one inch thick, about R6). I checked on this a
few years ago when I was thinking of doing the "ceiling" of my
crawlspace and the prices were exactly the same but the crash put
those kinds of spending plans on hold, sigh, so I can't recommend a
particular vendor. FWIW, www.tigerfoam.com seems to have decent


I called a local insulation company about six months ago to request a
price on spray-on insulating my crawl space. They said if it was "clear
and unimpeded", they could insulate to R19 for $1.00-$1.35 per square
foot (based on actual material utilization). I even asked about the
clearance (22"), and they said that was not an impediment.

When I think about how hard I work to hang insulation, and how nasty job
it is, that seems pretty inexpensive.

Last year, I paid about $4k for borate treatment, a vapor barrier, and
1,500s/f of R-30 Knauf Ecobatt in my crawlspace. They also drilled the
exterior walls and sprayed in borates in the outer wall cavities.

It was worth it. Savings look to be a few hundred a year, but the
comfort factor is wonderful. And the company belonged to my barter
club, so most of the money was barter I had saved up. Yeah, it sure
beat getting down there and doing it yourself.

I recommend doing the borates, too, to keep the termites at bay
forever. It's well worth it. My last home had $6,500 worth of termite
damage.

--
The reasonable man adapts himself to the world; the unreasonable
one persists in trying to adapt the world to himself. Therefore,
all progress depends on the unreasonable man.
-- George Bernard Shaw