Spray foam insulation is a high-performance solution that seals gaps, cracks, and hard-to-reach areas to dramatically improve a building’s energy efficiency and comfort. Applied as a liquid that expands into a dense, continuous foam, it creates an airtight thermal barrier that reduces heat loss in winter and heat gain in summer, lowers heating and cooling costs, and prevents drafts and moisture infiltration. Spray foam also adds structural strength, reduces outside noise, and helps deter mold growth when properly installed. Available in open-cell and closed-cell formulations, it can be tailored for attic, wall, crawlspace, and rim-joist applications. For best results, have spray foam installed by trained professionals who ensure proper ventilation, correct density, and adherence to safety and building-code requirements.