Creating a tightly sealed home is one of the most important energy efficient measures you can take. Air leakage, or infiltration, occurs when your inside conditioned air leaks to the outside or the outside air enters the house uncontrollably through cracks, gaps, and openings. Homes with higher air leakage are significantly less energy-efficient than well-sealed homes. They also require larger HVAC systems to keep the home comfortable. These larger systems must run more frequently to keep up with the temperature changes as the outside air leaks into the house escalating your monthly utility bills.
The airtightness issue goes beyond how well a building’s envelope performs. Uncontrolled air leakage can also provide a vehicle for unwanted moisture to enter a building, which is the number one reason for a building to fail, leading to costly building repairs. Because moisture is transferred predominantly by air currents, accounting for up to 98% of all water vapor movement in buildings, air sealing your home is essential. Leaky houses also allow dust, allergens, pollens, pollutants and other airborne particulates to enter the home, leading to poor indoor air quality.
Reducing the amount of air that leaks in and out of your home is a cost-effective way to cut heating and cooling costs, improve durability, increase overall comfort, and most importantly, create a healthier indoor environment.