Moisture-resistant drywall?

[Bananaosten]

Hi! I'm going to renovate the bathrooms at home, and I'm not really sure if these boards are "approved" in Sweden.

They are Norgips boards, described as gypsum boards. 12.5 mm* 2600 mm*1200 mm. They are from abroad and I have received a certificate emailed to me regarding these, stating that they are CE certified.

 

[norrbottenstorpet]

Gypsum board is not approved for wet room zone 1 (like the shower area) if you are planning to install tiles.

 

[Bonan]

Isn't gypsum board not approved in wet area zone 1 (like the shower corner) if you're planning to tile?

Doesn't it depend on which industry regulations you follow? According to GVK, it's approved I recall if you use approved waterproof membrane on top.

 

[norrbottenstorpet]

Yes, according to GVK
"Gypsum with cardboard can be used in wet rooms according to GVK's
industry regulations under the following conditions:
– When using a plastic sheet as moisture and surface layer in wet zone 1 and 2.
– When using a plastic sheet under tiles and clinker in wet zone 1 and 2."

And according to BKR, which I consider more common
"Cardboard-clad gypsum boards should not
be used in wet zone 1 as a substrate for moisture barriers
or as a backing board. Applies to both
floors and walls."

 

[byggare henke]

build as you like.
but it is not covered by insurance and you may be liable for hidden defects

 

[tank77]

Although it is approved to use drywall in wet zone 2, TS may have a large bathroom!

 

[byggare henke]

why mix materials?
can be a difference in terms of thickness

 

[isolde]

why mix materials?
there might be a difference in thickness

The OP probably gets the material cheaper from the other side of the Baltic Sea. What exactly does "mix materials" mean when he writes that the boards are 12.5 mm thick?

 

[Eddi Thomason]

build as you wish. but it won't be covered by insurance and you could be liable for hidden defects

On the other hand, if it's well built, the above is not an issue.

 

[lajsiiwan]

Follow what norrbottenstorpet wrote.
At work, we always follow BKR's guidelines and always use moisture-resistant gypsum board in bathrooms.