Cottage 1830 diffusion open

[Ursidae]

no, you will always have a dew point in the wall, it's pure physics.
then it's our task to construct a wall where moist air never reaches the dew point.
Normally, you use the vapor barrier for this.

The dew point is dependent on humidity and temperature conditions. With a vapor barrier, the idea is to have such low absolute humidity in the wall that the dew point is on the outside of the wall. (Or in the air gap at least)
I think that's what the others want to say.

 

[[old rusty]]

no, reverse moisture migration is something that is considered in every project planning.
many foundations have problems with this.

Yes, of course.
Didn't think about that part of new houses.

 

[Plupp 405730]

Dew point is always discussed when it comes to walls, why wouldn't you?
Just because you install a vapor barrier, the dew point certainly doesn't disappear.
The only thing that happens is that you prevent moisture from reaching the dew point, but saying it would disappear is completely incorrect.

You're the only one talking about the dew point outside the plastic; no one else does, and I don't need to argue about it further because I know how a wall works. The designers we work with don't refer to the dew point outside the plastic but instead call it the zero point, as no dew forms outside the plastic if it's built correctly.

 

[Daniel 109]

Okay, it seems to be mainly Oliven who doesn't understand how it works. And that there are a few different terms for the same thing and meanings for the same word.