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Typical Vinyl Window Installation | Indoor Humidity & Condensation
Care and Cleaning | Builder's Dry Wall Window

Indoor Humidity & Condensation

Avoid Excessive Indoor Humidity *Excessive indoor humidity in winter may cause surface condensation on all types of insulating glass.

Outside Air Temperature Recommended Relative Humidity
at 68°F indoor Temp
-20°F or Below Not more than 15%
-20°F to -10°F Not more than 20%
-10°F to -0°F Not more than 25%
0°F to -10°F Not more than 30%
10°F to 20°F Not more than 35%
20°F to 40°F Not more than 40%
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