ᐅ Aluminum-wood windows with triple glazing showing interior condensation despite warm edge spacer
Created on: 11 Feb 2021 09:10
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Hello everyone,
As some of you may have noticed, I am currently paying closer attention to details, and today, at -15°C (5°F), something caught my eye.
A few windows have developed condensation on the inside at the lower corners, despite low indoor humidity of 40% and a controlled ventilation system.
The windows are aluminum-wood, triple-glazed with warm edge spacers, part of a KFW55 energy-efficient house.
Is this considered a defect, or is it unavoidable and acceptable at these outdoor temperatures? I find it surprising that only 4 out of 20 windows are affected. Personally, when touching the corner, you can almost feel cold air coming through the seal.
Would it be reasonable to request a glass pane replacement from the window supplier?
I have attached a picture for you.
As some of you may have noticed, I am currently paying closer attention to details, and today, at -15°C (5°F), something caught my eye.
A few windows have developed condensation on the inside at the lower corners, despite low indoor humidity of 40% and a controlled ventilation system.
The windows are aluminum-wood, triple-glazed with warm edge spacers, part of a KFW55 energy-efficient house.
Is this considered a defect, or is it unavoidable and acceptable at these outdoor temperatures? I find it surprising that only 4 out of 20 windows are affected. Personally, when touching the corner, you can almost feel cold air coming through the seal.
Would it be reasonable to request a glass pane replacement from the window supplier?
I have attached a picture for you.
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Alessandro11 Feb 2021 15:26In the past few days, I have noticed condensation in the corners of almost all my Gayko windows! My seals in the corners are overlapped rather than mitered.
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knalltüte11 Feb 2021 17:08Tolentino schrieb:
A small anecdote about that: I store sparkling water on the balcony during winter, and after the long period with nighttime temperatures around -10°C (14°F), it tends to freeze sometimes...Off-topic: I had stored it in the car (forgotten), and had to take out a "mosaic" yesterday 😡On-topic: Our windows in the house don’t have that issue, but outside here it’s -8°C (18°F), inside +5°C (41°F) 😳
Schimi179112 Feb 2021 06:06Alessandro schrieb:
In the past few days, I have noticed condensation at the corners of almost all my Gayko windows! My seals in the corners are overlapped and not mitered.Is this now a valid reason to make a claim about the windows (seals)? Since this morning the temperature is again below minus 20°C (minus 4°F), I checked all the windows and found condensation on the room side of several windows. It is most pronounced in the bedroom. Could this be explained by the absence of a controlled mechanical ventilation system? Some windows are behind pleated blinds. As described above, this may potentially increase the effect.To some extent, this is normal due to the strong temperature difference, especially in the bedroom behind pleated blinds (which prevent air circulation), and when there is no ventilation.
However, I have noticed another effect.
I found a window in my home that is fogged on the outside on the lower half. The fogging can be wiped off but reappears after a short time. It only affects one pane out of 11 on this side of the building (east). This occurs at temperatures between -5 and -15 degrees Celsius (23 to 5°F).
I’m trying to understand how this can be explained.
However, I have noticed another effect.
I found a window in my home that is fogged on the outside on the lower half. The fogging can be wiped off but reappears after a short time. It only affects one pane out of 11 on this side of the building (east). This occurs at temperatures between -5 and -15 degrees Celsius (23 to 5°F).
I’m trying to understand how this can be explained.
Schimi179112 Feb 2021 06:55In the bedroom, several factors probably come together. It is relatively cool there. In our case, the temperature is about 18°C (64°F). Cold air holds significantly less moisture. Additionally, the humidity rises overnight. If it is extremely cold outside, condensation can occur. Our storage rooms are also not heated, so moisture tends to condense there as well. The dew point shifts. There are certainly diagrams available on this topic. I will measure the humidity in the bedroom.
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