Originally Posted by Ellentob
I'm wondering about applying spray foam to the undercarriage as a do it yourself project. This would protect and insulate the tanks and insulate the floor. Has anyone gone this route and what are the disadvantages? Just thinking out loud.
Harris, I did a large 2 part spray foam application in our attic. More and more places now handle the materials as it becomes more popular. The modern 2 part foam is supposed to be non-outgassing when cured, but it is very nasty to work with in the application process.
I can speak from experience that it is VERY hard to do overhead with any consistence of coverage. Also, you very much need protective gear, tyvek coveralls as you will be coated with it and a very good organic vapor mask and tight goggles. Pros use full face masks with piped in air supplies. One of the components in the liquid foam is attracted to moisture and will coat the outer layer of eyeballs -- and again I can speak from experience! I spent 2 days with cloudy vision after the attic process and I was wearing goggles, but I knocked them off a couple of times.
My recommendation would be that it can indeed be done DIY, but if it were me, I would look for a professional to do it for me.