Good morning!
Since this is my first post, I hope it’s in the right subforum...
I haven’t built myself, but I’m hoping to find some ideas here about the cause of my problem. It’s really stressful...
Now to the problem: Especially during the cold season, my windows get completely covered in condensation (see pictures/video below). Overnight, they become extremely wet, and you need 1-2 large towels to dry them off.
In addition, the water collects along the bottom edge, creating the perfect conditions for mold to develop.
There is frequent and prolonged ventilation during the day and morning, but this doesn’t help. The windows don’t feel very airtight either; you can especially feel drafts at the edges on windy days.
What causes this? Is it an insulation issue? Are the windows to blame? Or the walls? Unfortunately, I’m no expert...
Thank you very much in advance for your answers!
Since this is my first post, I hope it’s in the right subforum...
I haven’t built myself, but I’m hoping to find some ideas here about the cause of my problem. It’s really stressful...
Now to the problem: Especially during the cold season, my windows get completely covered in condensation (see pictures/video below). Overnight, they become extremely wet, and you need 1-2 large towels to dry them off.
In addition, the water collects along the bottom edge, creating the perfect conditions for mold to develop.
There is frequent and prolonged ventilation during the day and morning, but this doesn’t help. The windows don’t feel very airtight either; you can especially feel drafts at the edges on windy days.
What causes this? Is it an insulation issue? Are the windows to blame? Or the walls? Unfortunately, I’m no expert...
Thank you very much in advance for your answers!
I would basically want to know the age of the building, what kind of windows these are, which room it is, and whether the building has been renovated. Maybe one aspect doesn't match the other?
I don't see any photos or videos here.
You should actually provide more information or photos regarding the supply temperature from the existing system. You can't immediately assume it is due to poor ventilation if the space is being ventilated.
What is the temperature in the room? Is it being heated?
I don't see any photos or videos here.
You should actually provide more information or photos regarding the supply temperature from the existing system. You can't immediately assume it is due to poor ventilation if the space is being ventilated.
What is the temperature in the room? Is it being heated?
halmi schrieb:
The original poster mentioned something about 60-80%, which is simply way too high.This morning, I would have had the same issue, but only after airing out the room. In autumn, the outdoor humidity is naturally higher. You can’t get rid of the moisture because the humidity outside is higher than inside.
If you also have cold windows because they’re drafty or single-glazed, it’s clear that the moisture will mainly condense on the windows.
Where are the damp towels dried afterwards, and where is the rest of the laundry dried? If it’s inside the apartment, could the laundry maybe be dried somewhere else?
Alternatively, consider getting a dryer.
Musketier schrieb:
Where are the damp towels dried afterwards, and where is the rest of the laundry dried? This is the most important question. If the windows are not airtight, then the indoor humidity should actually be low. I suspect that too much moisture is being generated here: laundry, plants, etc.
Proper ventilation means, depending on the season, weather, and especially user habits, sometimes airing the room as often as five times a day instead of just once.
Once you understand these connections and have a hygrometer set up, the issue is usually resolved quickly.
Musketier schrieb:
This morning I probably would have had this as well, but only after airing out. In autumn, outdoor humidity is naturally higher. You can’t get rid of the moisture because the humidity outside is higher than inside.
If you also have cold windows due to leaks or single glazing, it’s clear that moisture will primarily condense on the windows.
Where are the damp towels dried afterward, and where is the rest of the laundry dried? If drying is done indoors, can the laundry be dried elsewhere?
Alternatively, consider getting a dryer.Which is only partly true; warm indoor air carries significantly more moisture outside than the much colder outdoor air can bring in. When the cold air then warms up, it can hold additional moisture.
M
Mottenhausen7 Nov 2018 09:29jumi1 schrieb:
I suspect that too much moisture is being generated here: laundry, plants, etc.- Is warm bathroom air from showering spreading to other rooms? Make sure to keep the bathroom door closed!
- The classic: a humidifier?
- Are the heating sources in the main living areas also heating unheated hallways, bathrooms, or guest rooms because the heating is turned off there?
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