[Shop-talk] Spray foam

[tputland at charter.net (Tim)]

I need to continue the quest to seal my attic (and SHOP) against 
bats......

So, on that note, we've all seen the (industrial) spray foam used on the 
TV shows. Is this bulk sprayable product available to the general public 
in any way shape or form? Or is there any sort of alternative available 
to us mortals?

Thanks!

Tim