Tag Archives: blower door


What is a Blower Door?

What is a Blower Door?

Every home has air leaks, but the cumulative total leakage can vary widely based on whether air sealing efforts have been made. To measure the amount of leakage in a home a tool called a blower door is used. Air leaks can be simple and inexpensive to seal if you can just find them, and that is where the blower door comes in. A blower…

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Air Leakage in Homes

Air Leakage in Homes

Air leakage in a house can cause uncomfortable drafts, but beyond that, energy researchers have discovered that sealing air leaks ina home is one of the simplest and least expensive ways to save energy. A typical house may lose about 30% of its heat through walls and ceilings, 30% through windows and doors, and 30% through general air leakage. Spending a few hours sealing leaky…

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Air Sealing New Houses

Air Sealing New Houses

Minimizing air movement in and out of a house is key to building an energy-efficient home. Controlling air leakage is also critical to moisture control. Below are some general techniques for air sealing that are used in house construction.   Materials used as structural and finish components in a house also act as air barriers. By sealing the holes and seams between sheets of drywall,…

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