ᐅ Is it true that you are no longer allowed to open the windows when using a ventilation system?
Created on: 5 Sep 2019 13:27
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Heidi1965
We are planning a new build with standard insulation, without any KfW standards since we do not need any loans.
Now we are quite uncertain:
One HVAC installer says that a ventilation system is absolutely necessary; otherwise, we will get mold. After all, no one ventilates by fully opening windows five times a day, and we won’t either. Also, leaving the bathroom window on tilt for 10 minutes after showering does not help.
Another installer says that a ventilation system is unnecessary because we are not building according to KfW standards. According to him, then we should never open windows again, as the ventilation system will immediately shut down and get confused. So, never sleep with the window open, never smell freshly cut grass, or hear the birds singing? That simply can’t be right.
What should we do? Who is correct?
Now we are quite uncertain:
One HVAC installer says that a ventilation system is absolutely necessary; otherwise, we will get mold. After all, no one ventilates by fully opening windows five times a day, and we won’t either. Also, leaving the bathroom window on tilt for 10 minutes after showering does not help.
Another installer says that a ventilation system is unnecessary because we are not building according to KfW standards. According to him, then we should never open windows again, as the ventilation system will immediately shut down and get confused. So, never sleep with the window open, never smell freshly cut grass, or hear the birds singing? That simply can’t be right.
What should we do? Who is correct?
M
Mottenhausen6 Sep 2019 10:45In theory, modern silicone resin plasters and exterior paints are somewhat breathable, but this alone is not enough to completely prevent mold.
This is also a significant improvement in terms of burglary protection. Just don’t forget to steal an emergency hammer from the city bus when you get the chance and then hang it in your own house along planned escape routes.
nordanney schrieb:
in modern houses only fixed windows and patio doors
This is also a significant improvement in terms of burglary protection. Just don’t forget to steal an emergency hammer from the city bus when you get the chance and then hang it in your own house along planned escape routes.
Mottenhausen schrieb:
In theory, modern silicone resin plasters and facade paints are supposed to be somewhat breathable, but that won’t be enough to completely prevent mold. That’s just marketing talk from the manufacturers. It doesn’t help since there’s still a wall in between. No matter how breathable it might be.
Mottenhausen schrieb:
In theory, modern silicone resin plasters and facade paints are somewhat breathable, but they are not sufficient to completely prevent mold. ...plaster and ...paint—that basically says it all (ONLY plaster and paint are mentioned). Even today, it is possible to build in a very modern way using mostly natural materials like straw and clay—this results in “breathable” walls and a very healthy indoor climate. However, I don’t think Heidi1965 intends to do this, and it would lead us far off topic.
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