I called about 15 companies and received estimates from 8. Advantage was not the lowest quote but was one of the most professional when it came to answering questions and getting the paperwork done. The crew was awesome. They did exactly what they said they would do, and even exceeded my expectations. They cleaned up after themselves. I must admit I was hesitant to spend money on spray foam, versus cellulose or fiberglass, but seeing the finished product I am happy I did it. There was an IMMEDIATE difference in the temperature of the attic and basement.