Plastic or not?

[terese]

In our exterior walls, we have: panel-exterior gypsum-insulation-plastic-insulation, interior gypsum. Now I've heard that you shouldn't have plastic in the wall that is against wet rooms, because on the inside you have a waterproofing layer that causes condensation between the waterproofing and the plastic. How do you do it? We've asked all sorts of people, even house companies, everyone says different things!

Grateful for answers /terese

 

[BoD]

How do you seal the vapor barrier in other spaces with the wet room's waterproofing?

 

[General_Failure]

How do you ensure a tight seal between the vapor barrier in other areas and the waterproofing membrane in the wet room?

Not sure if this solution is kosher, but you can let the plastic from the other areas overlap the moisture barrier by a few centimeters and then paint together the plastic and moisture barrier with moisture barrier.