The inside of our house was done, completely, all the wall, and the ceiling (not the floors, as the floors have drains in them on the slab.
Yes, were are in a concrete 7 story building.
Before...........
After
The hardwood floors are about 6" off the slab, so there is an air space there for plumbing etc.
When the guys were getting ready to spray the foam, I happened to be there, they had the kitchen area all masked off to spray, I asked why they were only doing the kitchen, they said that was all it called for.
I called the architect, and asked hime why??? He said it does not get cold enough in Tokyo to bother......
I asked the spray foam insulation guys how much more it would cost me to have the whole thing done, they said maybe $1000, so I called the architect and told him to do so. Boy was I glad we did, the house, even on a "Cold"
day, like today, getting down near 0C is not so cold inside, and in the summer, even without the AC the place is a LOT cooler. On the tenants floors (2F - 5F) they were not sprayed, and you can really tell the difference.
If done right, it provides a really good moisture barrier as well, I understand.
Cheers!