Debunking Persistent Myths About Window Condensation

 

Condensation is perhaps the most misunderstood phenomenon involving windows. Many homeowners consider it bad while experts say it constitutes good energy efficiency. To further understand it, Renewal by Andersen® of San Francisco dispels the most stubborn misconceptions about it:

It Points to Failure

Any experienced window installation specialist would attest that this isn’t necessarily the case. When double-pane units fog up inside, it means their seal is broken, allowing the insulating gas to escape and moisture to get inside.

The case is different, though, when insulated glass units sweat on the outside. Condensation is water vapor turned to liquid, which occurs when warm air touches colder surfaces. When the temperature of the object is below the dew point, condensation forms.

Condensation, per se, isn’t good because it can cause water damage to materials non-resistant to rot or corrosion, such as wood or steel. However, exterior glass condensation is indicative of weathertight units, which was attained by flawless window installation. Without proper ventilation, airtight windows keep indoor moisture from going out.

It Automatically Means There’s Excessive Moisture in the Room

Humid rooms are the most vulnerable to condensation, but areas far from the source of wet, warm air aren’t necessarily safe. Vapor pressure forces moisture through almost anything, including plaster, brick and cement.

Also, you ought to know from where indoor moisture comes. Everyday, water-related activities send a surprising amount of moisture into the air. Cooking three meals a day can add up to five pints of water, and each shower is another half pint.

It Can’t Be Reduced

It’s impossible not to generate indoor moisture, but something can be done to prevent it from forming condensation. When tackling window installation, choose replacement products designed Low-E coatings, an argon gas fill and a warm-edge spacer. These components keep most of the glass above the dew point even when air temperatures suddenly change, helping to prevent moisture from turning into liquid.

At Renewal by Andersen of San Francisco, our high-performance windows have a unique set of features that offer excellent condensation resistance. Call us at (866) 609-5033 now to schedule your no-obligation consultation and get a free estimate in San Francisco, CA, or any neighboring community.