Very interesting article about Polyurethane Spray Foam from Green Building Advisor

Started my business career in the foam business, exited the foam business in 1981 hmmm. I would only use cellulose in my house for attic insulation, which I did in a 1990 build. R-60 cellulose $1.20 to $1.40 per sq ft compared to the price of PUf of same r-value. It ain't rocket science just dollars and cents.

Thanks for info Lbear, I'm not going to use SPF in house plans now.
BBP