Have a question, bought a new house and noticed now when I was in the attic checking things out that there is no vapor barrier in the ceiling above the bathroom. We have a warm attic that is parallel insulated and unventilated.
My question is, is no vapor barrier needed in the bathroom ceiling when you have a warm attic? There's no ventilation to take care of the moisture that goes up to the attic, the only advantage is that it's warm, so I avoid condensation, but the humidity increases anyway.
/Rikard
My question is, is no vapor barrier needed in the bathroom ceiling when you have a warm attic? There's no ventilation to take care of the moisture that goes up to the attic, the only advantage is that it's warm, so I avoid condensation, but the humidity increases anyway.
/Rikard
If I'm not completely off track, you should have tiles and thus a moisture barrier underneath, so you shouldn't have a vapor barrier in exterior walls. When it comes to the ceiling, the question is whether it's painted with a waterproofing system, and even if it is, I think you should have a vapor barrier? I have never encountered a situation where you don't plastic wrap the ceiling towards an attic BUT
you mentioned you have an insulated attic, is there a vapor barrier up there? If that's the case, I would say no vapor barrier is needed in the bathroom ceiling
If this is written in a messy way, it's because I'm thinking while I'm writing
you mentioned you have an insulated attic, is there a vapor barrier up there? If that's the case, I would say no vapor barrier is needed in the bathroom ceiling
If this is written in a messy way, it's because I'm thinking while I'm writing