Heat loss prevention is important because a home that loses too much conditioned air can feel uncomfortable and cost more to heat or cool. Heat can move through attics, walls, crawl spaces, gaps, ducts and poorly insulated areas. First Defense Insulation provides heat loss prevention, attic spray foam insulation, air sealing service and energy efficient insulation for homeowners who want a more comfortable home. In many houses, the attic is one of the biggest areas to review first. Warm air can ...