double waterproofing

[alfwik]

Have previously added insulation to the exterior wall in the bathroom and under the particle board there is now "byggplast". I am now thinking of placing tiles on the new gypsum boards and then a new waterproofing layer is required. Will it work with double waterproofing layers, it feels like I am building in something that won't be good. Is a 13 mm gypsum board sufficient since I have particle board as a base?

 

[hakaner]

1) Replace "byggplasten" with diffusion-resistant, wind-tight fabric
2) Chipboard under the waterproofing layer is not approved
3) Gypsum behind tiles is not approved
4) Read BKR's industry regulations (available at www.bkr.se)

-Right thought regarding double waterproofing layers, it's not good!

 

[Stefan N]

2. The new industry regulations have no objections to placing wood-based boards behind the wet room boards. http://www.byggahus.se/badrum/137900-vatrumsskiva_pa_osb
3. Regular gypsum is allowed in certain areas, other areas require wet room gypsum. 2.3 in BKR

 

[alfwik]

The additional insulation is done on the inside of the bathroom with 10 cm of gullfiber, on top of this is construction plastic and then chipboard. Do I need to remove the chipboard and remove the plastic?

 

[hakaner]

Stefan N: I apparently need to read through the new rules...

alfwik: I should have replaced the plastic, but think this through yourself too...

 

[alfwik]

I tear off the particle boards and remove the plastic and install the drywall that is approved.