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Window condensation can be frustrating. And left untreated, recurring condensation can lead to long-term window damage. Keep windows operating properly and reduce internal and external condensation with these tips. Window condensation frequently occurs when there are significant differences in the air temperature outside and the temperature of the glass.
While both interior and exterior window condensation can be irritating to homeowners, unaddressed interior condensation is more likely to lead to long-term problems. Luckily, interior and exterior window condensation is not a sign of a faulty window, and there are many ways you can reduce the condensation in your home. Because glass surfaces are usually some of the coldest parts of your home, condensation appears on windows first. This is generally in the form of water droplets or frost on the interior of your window.
As interior air becomes drier or as the glass surface becomes warmer, condensation begins to evaporate. Condensation on the interior of windows and doors occurs when warm air comes into contact with cool glass. This is especially common in colder months, when indoor air is warmer and more humid and outdoor air tends to be cold and dry. Replacing drafty windows and doors or installing a new roof or siding reduces air infiltration into your home, making a tighter seal.
This tighter seal is great news for your energy costs, but a tightly-sealed home also retains more humidity, which means condensation on colder surfaces in the home may occur more frequently after these improvements.
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Related Articles. Article Summary. Part 1. Install a hygrometer. A hygrometer is a device that measures moisture levels in the air. Since condensation forms when warm moisture in the air collects on a cold surface, such as a window, tracking the humidity level in your house can help you stop condensation.
When the moisture levels in the house get too high, take steps to reduce the humidity. When the temperature outside is below 0 F C , keep the humidity in your house between 15 and 25 percent. When the temperature outside is between 0 and 40 F and 4 C , keep the humidity inside between 25 and 40 percent. Use exhaust fans and vents throughout the house. One of the best ways to get humidity out of your house is to vent it outside through exhaust fans. Using exhaust fans is important in certain rooms and with certain appliances that produce moisture.
Run them for at least 20 minutes after your shower. Use kitchen and stove fans when you're cooking. Run them for about 15 minutes after you finish cooking. Make sure your dryer vents to the outside for when you're doing laundry. A gas fireplace must have a chimney that vents outside, and you should always keep the damper open when you're having a fire in a wood burning fireplace.
Take your plants outside. Indoor plants can be great in your home, but if you have trouble with condensation, you should keep them outside whenever possible. This is because plants produce moisture, so keeping them inside can exacerbate condensation issues. If you have a sun room that stays dry, you can also keep your plants there. Line dry clothes outside. If you must line dry your clothes, take them outside to prevent water from evaporating off the clothes and adding excess moisture to the air inside.
If you must line dry clothes inside, keep them in a well-ventilated room, and open a door or window. Close doors when bathing and cooking. When you shower or bathe, close the door to the bathroom to keep steam and moisture from escaping into the rest of the house.
If you have condensation between your double-pane windows, the best way to get rid of it is to hire a professional to either replace the window pane or the entire window. Since failed window seals can diminish the insulating properties of a unit and alter the comfort levels of your home, it is best to address the problem as soon as possible.
We also provide:. Contact Glass Doctor to stop condensation from forming on your windows in the winter. Call us at to schedule a free, in-home consultation today. Skip to main content. Some unconventional methods include putting cat litter in a sock, tying it up and placing it on a windowsill. Putting a bowl of salt on the windowsill has also proven to be a good hack.
Keep vent tumble driers to the outside if not of the condenser type. And, be sure to clean your dryer vent often to keep it doing its job efficiently. If you're using a humidifier, and condensation has recently become a problem, try to turn it down for short periods at a time until you see an improvement. Try the other methods ahead of investing.
You might not want a dehumidifier running at night in a bedroom, but if you put yours on after you get up and time it to switch off an hour or so later, it'll stop condensation and its effects from becoming a problem. And in case you were wondering, dehumidifiers use very little energy much less than tumble dryers to run, so you won't see a hike in your energy bills.
Keep drapes open to stop trapping moisture and heat on the window panes. This will stop wet drapes also which is never nice. Open your windows — by keeping your windows open, you allow the humid air to circulate the room and escape outside. Keep your curtains open - keeping curtains open allows air to circulate against the window, which prevents condensation from forming.
If keeping curtains open overnight is difficult, for example, due to streetlights or privacy concerns, then simply investing in thinner curtains can still have an impact, especially if you keep your windows open too.
Leave the exhaust fan on — A common mistake people tend to make is only keeping exhaust fans on while cooking or during a shower.
However, leaving it on for longer, ideally overnight, works much better in preventing condensation, as it allows air the chance to properly circulate the room, which reduces condensation.
This is all due to the moisture levels in your home but it could also be that the moisture is managing to seep through between both window panes as the sealant is old and worn. If it's quite saturated, consider replacing your windows or the sealant. Otherwise, you should be able to sort it out using the above tips.
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