Weatherizing a home can make its occupants sick, experts in indoor air quality are warning.
Sealing air leaks and adding insulation can cause or increase health threats that include mold, radon and carbon monoxide.
The answer isn't to live in a drafty, hard-to-heat house. The solution is to take steps to reduce moisture, install proper ventilation and control contamination as part of the weatherization process.
"When you're weatherizing, don't do any harm," said Bill Turner, president of Turner Building Science & Design LLC of Harrison.
Turner made that point during the past three days to energy auditors, weatherization crews, contractors and other professionals at seminars around the state. They came together to field test a first-of-its kind training program, sponsored by the Maine Indoor Air Quality Council and the U.S. Environmental Protection Agency.
The goal is to develop a formal set of rules to help the country's growing weatherization industry evaluate and address indoor air quality problems. The council will hold its first training program in February, in Augusta.
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