If you live in an older home and have trouble keeping it at a comfortable temperature or notice that your utility bills are going up, it may be time to update the insulation in your attic. Over time, the fiberglass or cellulose insulation can shrink or move, leaving parts of the wall or ceiling uncovered. Mice or squirrels could also get into your attic and use the insulation there as a place to sleep or even eat. Instead of constantly replacing that fiberglass or cellulose insulation, why not use spray foam insulation to solve the problem once and for all? Spray foam insulation grows bigger and harder as it dries, so it fills every nook and cranny and doesn’t move or get thinner. Also, foam insulation will fill in holes, making it impossible for mice and squirrels to get into your attic.