Our solution was to first remove and dispose of the old existing attic insulation. We then installed a nominal 4 inches of open cell spray foam insulation on the roof deck and gable end walls, and the gable vents were sealed with spray foam insulation as well. Since spray foam insulation provides an air seal, this will prevent outside air from entering the attic space, making this area a more consistent temperature year-round. This will, in turn, keep the rooms below a more comfortable temperature and allow the HVAC unit to work less often to maintain a comfortable temperature in the home. The homeowner can expect to see a savings each month in energy costs.