Insulating a rim joist is one of the most important things you can do to start making your home more efficient. It can help lower your energy bills and make the first floor of your home more comfortable. To do this, we start by first removing the old nasty insulation from the bay spaces in the basement. Once that is done we spray the rim joist with our 2-part spray foam insulation in every bay space. We cover the entire space and the sill plate so no air from outside can be sucked inside from the basement. After this we clean up and your rim joist is insulated! No more cold floors and you will see your energy bills start to go down!