Hello dear forum!
I just don’t understand... maybe someone can explain this to me?
We moved in a week ago, and I’m currently focusing a lot on ventilation and mold. Still, a few questions remain:
Why shouldn’t I keep windows and doors open for several hours at a time when the weather is nice?
The outdoor humidity is quite low right now, and the sun is shining.
So far, I’ve kept windows and doors open for several hours during the day.
As a result, the indoor humidity (which was often around 80%) sometimes dropped to 40%.
But isn’t that good?
I often read that this kind of ventilation would actually bring moisture into the house.
Where would the moisture come from if it’s dry outside?
It’s said that the air would condense on cold walls. But what exactly is meant by “cold”?
Why should you keep closing the windows repeatedly when ventilating? What effect does that have?
And does it make sense to run the heating during the first summer?
Thanks in advance for your answers 🙂
I just don’t understand... maybe someone can explain this to me?
We moved in a week ago, and I’m currently focusing a lot on ventilation and mold. Still, a few questions remain:
Why shouldn’t I keep windows and doors open for several hours at a time when the weather is nice?
The outdoor humidity is quite low right now, and the sun is shining.
So far, I’ve kept windows and doors open for several hours during the day.
As a result, the indoor humidity (which was often around 80%) sometimes dropped to 40%.
But isn’t that good?
I often read that this kind of ventilation would actually bring moisture into the house.
Where would the moisture come from if it’s dry outside?
It’s said that the air would condense on cold walls. But what exactly is meant by “cold”?
Why should you keep closing the windows repeatedly when ventilating? What effect does that have?
And does it make sense to run the heating during the first summer?
Thanks in advance for your answers 🙂
blockhauspower6 Jul 2014 12:15Hello,
when warm air cools down, its relative humidity increases. Once it reaches 100%, condensation occurs, usually on surfaces such as walls inside the house. This often happens in summer because the indoor air is cooler than outside.
When cold air is heated, the relative humidity decreases, which is why indoor air tends to be drier during winter ventilation.
I wouldn’t overcomplicate the ventilation issue, as temperatures inside and outside generally even out over time during summer. The only place where this problem persists more permanently is in unpartitioned basements with cold exterior walls.
I hope this helps a little.
Best regards
when warm air cools down, its relative humidity increases. Once it reaches 100%, condensation occurs, usually on surfaces such as walls inside the house. This often happens in summer because the indoor air is cooler than outside.
When cold air is heated, the relative humidity decreases, which is why indoor air tends to be drier during winter ventilation.
I wouldn’t overcomplicate the ventilation issue, as temperatures inside and outside generally even out over time during summer. The only place where this problem persists more permanently is in unpartitioned basements with cold exterior walls.
I hope this helps a little.
Best regards
Similar topics