Air Sealing Products for Residential Insulation

Air sealing products are essential for improving home energy efficiency by closing the small gaps and cracks where air can escape or enter. While proper insulation slows heat transfer to maintain indoor temperatures, the air sealing process helps eliminate air leaks that can cause drafts and discomfort, reduce the effectiveness of air-permeable insulation, and allow warm, moist air to reach places where condensation can occur. Insulation and air sealing work best when combined because even small openings throughout a structure can contribute to heat loss, drafts, and energy waste. Air sealing insulation creates a tighter building envelope and can lead to significant energy savings. The EPA (Environmental Protection Agency) estimates that combining air sealing with insulation in key areas such as attics, floors, basements, and crawl spaces can reduce cooling and heating costs by an average of 15%. Air leaks are often found throughout the home, from roofs to basements, especially in areas like rim joists (the outer edge of a floor framing system), foundation walls, ceilings, and around mechanical systems. Typical places where air leaks are found include gaps around plumbing, wiring, pipes, ductwork, and vents.

Owens Corning offers a range of air sealing products designed to help limit air movement and improve energy performance in homes. Spray foam insulation expands to fill gaps, making it a versatile option for sealing irregular surfaces and hard-to-reach spaces, such as wall cavities, crawl spaces, and ceilings. Our spray foam air sealing insulation products are open or closed cell, two-component, semi-rigid polyurethane foams with low VOC performance and are engineered for consistent application and coverage. Gun foam sealants are effective for closing smaller cracks around pipes, wires, and vents, and are often used in both new builds and retrofit projects. Sill and framing gaskets can be installed along sill plates and framing joints to help reduce airflow at the base of walls and around structural connections. For more advanced applications, additional solutions are available to seal seams between XPS insulation foam board panels and support the integrity of continuous insulation systems.

Browse Owens Corning’s residential air sealing products to find practical solutions for reducing air leaks and improving energy efficiency. These air sealing options support a more comfortable, energy-efficient home and cover a wide range of applications, including attics, basements, ceilings, and foundations. Contact us to learn more about our insulation and air sealing products.