Fiberlite's Cellulose Insulation products effectively maintain a building's environment by controlling the gain or loss of heat. The spray applied application (concealed or exposed) also stops air infiltration by sealing around electrical and plumbing outlets and fills all voids, seams, cracks and other structural irregularities. Eliminating air infiltration allows the insulation to perform more effectively. This increase in thermal performance saves money on heating and cooling costs.