I used Gila in my previous home when I moved to Florida to help with the utilities. It actually reduced the noise inside as well. Now that I have moved to a new home in Florida, I just ordered it again and it is amazing. Yes, it is difficult at first to install alone especially with larger windows, but once you figure it out...it goes on easier each time, .it just requires a little patience and endurance and it will repay you with savings!!! User's recommendation: I highly recommend it and don't scrimp on the solution!!