Worked great, I insulated under a deck with a sun room. Hardest part was crawling under. I used 18 canisters for 196 sq feet. 1.5-2” coverage. Just be sure to remove cobwebs first, the foam won’t punch through. If everything is well shaken and you change cans quickly you don’t need to clean the gun between canisters. Best to have a buddy helping. The tubes suit fit well and in 6’ 2”