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Insulation and ventilation 163 Common Questions With Expert Answers|2025
Why are roofs vented in the winter in cold climates? - ️️We were not able to completely stop air leakage into cool roof spaces, so we need to get rid of that warm, moist air. 
Why do we want to change the air in houses? (two reasons) - ️️1. Eliminate moisture, odors and other indoor air pollutants 
2. Bring fresh air into the home 
Why does condensation sometimes show up in new homes on the outer side of a polyethylene vapor barrier on the inside of a basement wall? - ️️Moisture from...