Dr. Energy Saver by Keith Trembley is working on a home in Bangor, Maine. You can see the before photo of the attic and chimney, there is only 3.5" of fiberglass insulation. Also, there is no fire stop around the chimney. This just pulls all of the warm air out of the house all winter long. Also seen here we are pulling nails from boards in an attic. We need to remove the boards In order to install cellulose insulation. You can see the finished result; this work will pay for itself in 4 years and make the home much more comfortable.