Most of today’s windows are made from a frame material and an insulating glass “sandwich”—each component subject to wear, weathering, and potential failure. Weatherstripping in the frame and moving parts can wear out with use. An insulating glass panel may suffer a broken seal after years of expansion and contraction with temperature changes—creating a “fogged” [...]

Outside air is usually drier than the air in your home. The moisture in wet air is compelled to flow toward and mix with the outside drier air, and it does so with a force of nature that is known as vapor pressure. A relentless force, vapor pressure can even go upstream to airflow as [...]

1. Shut off all household humidifier units (including the furnace humidifier). 2. Ventilate regularly. Air out the entire house for a few minutes each day. Ventilate kitchen, laundry and bathrooms during use. 3. Run exhaust fans longer and more often. 4. Open the fireplace damper. 5. Be sure attic and basement crawl-space louvers are large [...]

Condensation on the inside of a window is a result of a higher air moisture content contacting lower temperatures on the glass. The higher the interior humidity and the lower the outside window temperature, the more condensation can occur. Excessive interior humidity can lead to structural damage and health concerns if high moisture levels are [...]