Saturday, November 17, 2012

Clever air sealing assessment

In addition to the ever important blower door test, use a fog machine to expose leaks from the outside of your home.  Reverse the fan to pressurize the house rather than depressurize which is what a blower-door test does.  Place a cheap fog machine in the house, stand outside and watch (hopefully not) the fog seep out of the undiscovered openings.  Do this before the drywall is hung.


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