Is Condensation on Windows a bad sign?
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Is Condensation on Windows a bad sign?
Greg Olmstead
Dec. 12, 2019Last updated: Aug. 27, 2020
Since the recent cold snap our double glazed windows are running with water, every morning it's all over the window sills, running down the wall - in the bathroom it's even making a puddle on the floor tiles. Now I noticed the seals at the bottom of our windows are starting to get what looks like a black mold - should I be worried? What can I do to stop it - or is condensation on our windows just a part of living in Michigan in winter?
Condensation on double-glazed windows in cold climates is fairly common unfortunately. Despite being common it can be a problem, particularly in extreme cases, which yours seems to be. First I would point you to a page we have that should give you all the info you need –
Condensation on windows – what causes it and how to stop it
And to address your case specifically, I’m not surprised that it is worse in the bathroom, that’s where the most moisture is. But running all the way down the wall to create a puddle on the floor is quite a lot. What you really need to do is address the high level of humidity that I’m quite certain you have in your home, because you are already seeing the signs of damage in the form of black mold on your window frames.
In order to be able to fix your problem, I would first recommend you get a hyrometer, which will measure the relative humidity in your home. They aren’t expensive (probably in the $20 range) and it will be great to have in the future to keep an eye on the humidity levels.
至于湿度的来源——这里还有几个问题——你们有地下室吗?潮湿吗?你有和使用炉灶的引擎盖吗?它有排气口吗?你有(或使用)浴室风扇吗?这房子有多少年了——你知道它是哪年建的吗?