My LP usage is down 35-40%
I have a 100 year old 2-story farm house. Since I have had my house insulated by RetroFoam, all the drafts are gone. There is an even, consistent temperature throughout the house. The furnace doesn’t run all the time like it used to. I now turn the thermostat down to 66 at night instead of 72 and my house still feels warm. My LP useage is down 35-40%. Thank you to the guys from RetroFoam.