I had For Energy put installation in my attic. They put in 18 inches of cellulose in and foamed some areas to seal them and sealed the ducts. When all done I still had leaks in my condo and failed the energy star standards and paid $4000 for the work. It made NO difference in my energy bills and I was promised to see a $40 reduction every month. I called several times to reach Adam and had to leave a message. Trent usually answers the phone. The cost of film on the windows is high. I don't think I got anything for the money I put in and still waiting to get my green energy certificate to show I had my condo attic insulated.