Bathroom in house built -68 plastic or vapor barrier against outer wall?

[Zorgen]

hi, renovating a bathroom in a house built in 1968. there was some kind of sheeting on the wall with plastic in the middle which was removed to replace insulation. the question is whether I should install new diffusion-tight plastic or vapor barrier or nothing? it will be mounted with plywood + gypsum then sealing sheet/wallpaper?

best regards

 

[tergo]

no double waterproofing
mounted plywood + gypsum then waterproof fabric/wallpaper? yes

 

[HEM2121]

not double waterproof layers
installed plywood + gypsum then waterproof membrane/wallpaper? yes

Do you mean wet room gypsum?

 

[Zorgen]

Do you mean moisture-resistant drywall?

It is recommended to use moisture-resistant drywall in wet zone 1 + 1m, then "regular drywall".

 

[Jonatan79]

no longer.

 

[Zorgen]

not double waterproof layers
installed plywood + drywall then waterproof membrane/wallpaper? yes

Exactly, 2 waterproof layers seem unnecessary, the question is whether a vapor barrier installed on the studs is unnecessary?

 

[Zorgen]

not anymore.

What is the latest from the gentlemen at GVK? Regarding plaster in wet rooms 🙂

 

[Jonatan79]

Exactly, 2 airtight layers seem silly, the question is whether a vapor barrier installed on the studs is unnecessary?

Vapor barrier is common.

 

[Jonatan79]

What is the latest from the gentlemen at GVK? Regarding gypsum in wet rooms 🙂

A few years ago the recommendation was wet room gypsum, not anymore.

 

[Zorgen]

A few years ago, the recommendation was wet room gypsum, not anymore.

So now they are satisfied with gypsum with cardboard paper "regular gypsum"

 

[Jonatan79]

So now they are satisfied with drywall with cardboard "regular drywall"

You bet

 

[HEM2121]

So now they are satisfied with gypsum with cardboard "regular gypsum"

Go to BKR.se and read or call them tomorrow and ask. Do according to the industry regulations so it is done correctly; if you sell, you have much to gain. I see all too often in house sales, bathroom renovation is done, then it turns out that what has been done is only replacing tiles and nothing more. Even sometimes they have neglected to change the floor drain. Those houses are not interesting.