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  • Mark Gordos

Air Sealing Your Home


Spray foam insulation products are often selected because they can provide superior performance and also contribute to greater energy and operating cost savings in buildings. In particular, closed-cell (medium density) and open-cell (low density) spray-applied polyurethane foam (SPF) can insulate and air seal residential and commercial buildings quite effectively, economically, and efficiently. Its air-sealing characteristics, along with the ability to minimize moisture and temperature-related issues, and capacity to enhance the performance of a wide variety of building types makes it ideal.

Why is air sealing your home beneficial? Due to Florida's high humidity and high temperatures during most of the year, attics with blown in or batten insulation allow that moisture and heat into the attic area. The insulation does create a barrier between attic and conditioned space below, but is not the most efficient method. Spray foam, on the other hand, creates a sealed air envelope of the entire building. This sealed envelope does not allow heat and humidity to affect the attic thus making that space cooler and drier. Most homes have HVAC ductwork in the attic and spray foam's sealed envelope reduces condensation on the ductwork and lowers the temperature which reduces energy consumption to cool or heat spaces below.

Effective air barriers have positive impacts not only on heating and cooling energy costs, but also on moisture problems, indoor air quality (IAQ), and acoustics. This is because moving air can carry unwanted moisture, contaminants, or noise into a building. Overall, proper air sealing with an air barrier system results in more sustainable and durable buildings.


Photo credit: https://www.finehomebuilding.com/2019/06/27/air-sealing-and-insulating

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