Originally Posted by LooNeeBus
I'm in the process of removing the ceiling and siding to re insulate my 98 BlueBird. I've been researching all possible spray foam applications, DIY and Professional. I'd really like to do it ourselves since it will save us money. Did you Spray Foam yourself? I'm interested in s product called Foam it Green, I wonder if you've heard of it before? I also watched this interesting? show on spray foam nightmares where people had there attics spray foamed and it was causing them distress... I've read good and bad stories, just want to make sure we do the best job we can. Thank you for any thoughts you may have.
It will cost you roughly the same whether you do it yourself of have a pro do it. It is the quality of the finished product you need to worry about.
The mobile spray foam rigs the professionals use will typically set you back fifty to eighty thousand. This machinery heats, pressurizes and mixes the foam components. The result is a finished job of much higher quality than you can achieve using the do-it-yourself kits.
Then, there's cost. The kits cost about $1/board foot, and that is also about what the pro will bid to do the job. In a competitive market, a pro may be a bit lower priced. The big difference is who gets sweaty and messy in the process.
Fumes from spray foam are terribly toxic, but only on the day it is being applied. There is an intense chemical reaction when the two parts mix, but the heat and off-gassing tapers off steeply within a few minutes.
The fumes should be taken very seriously. You need supplied air to do this work safely inside an enclosed area like a bus - that is, air that is pumped to your mask from outside the work area.
Spray foam cures rapidly. You can cut and shave it less than an hour after it is sprayed, and you should, because this task will be much more difficult by the next morning when it is completely cured.
It should be obvious that when the foam has cooled and hardened, the chemical reaction has ended. After that - again, obviously - no more fumes are being produced. Unfortunately, a lot of folks don't understand chemistry, so there are persistent myths that spray foam insulation perpetually emits gases. It doesn't.
Remember, for insulating a skoolie, we're talking about 2 lb. closed cell foam. Besides having the highest R value per inch of any affordable insulation, there are four other reasons to choose it:
1) Structural strength - adhesion and tensile strength both exceed 30 PSI
2) Sound deadening - closed cell foam reduces resonances because of its strength and also reduces the transmission of low frequency sounds.
3) Vapor barrier - at two inches minimum thickness, closed cell foam is a complete vapor barrier. Properly applied to a good surface, it will prevent rust.
4) Mold prevention - this material does not support mold growth.
Hope this helps...