Round wall in shower

[fn76]

Wondering if anyone has experience with curved walls in a bathroom and worked with fiber cement boards. I have installed Knaufdanogips Aquapanel indoor throughout the bathroom, but I still have the semi-circular wall left. I recall that this board should be able to bend at a radius, but the test pieces I've tried haven't worked so well; the boards break. The diameter in the shower is 1040 mm.
If this Aquapanel won't work, there's Ivarssons ivarit UniCo flex. Is it possible to combine these two boards in the same space?

 

[stOra_m]

An alternative might be LUX Element. I have only worked with their regular flat panels for walls, but they were very light and easy to work with.

You can find a link for retailers in Sweden here.

// stOra_M

 

[fn76]

Thank you for the link. However, I see that the thinnest LUX panel is 30 mm, so the transition doesn't work well. The Aquapanel is 13 mm thick.

 

[bigsnucke]

There is a luxskiva from 4mm and up. Full-size building panel is available in e.g. 12 mm.

 

[estwing]

I have a round wall in the bathroom..
use 6 mm plasterboard and water it well.
apply 4 layers
frame at 20cm c/c and it works great.

Best regards
snickar estwing

 

[fn76]

So I thought I'd do it on the outside but not inside the bathroom. After installing fiber cement boards throughout the bathroom, it feels silly to put paper-faced gypsum in the spot where it will be the wettest.
Can it work to wet the fiber cement board and then bend it?
I have c/c 150.

 

[estwing]

That's what I thought to do on the outside but not inside the bathroom. After mounting fiber cement boards throughout the bathroom, it feels silly to put paper-faced gypsum in the place that will be the wettest.
Could it work to wet the fiber cement board and then bend it?
I have c/c 150.

but you prime and use rubber, right?
what gets wet?

best regards
snickar estwing

 

[Apprentice]

Agree with estwing. Use 2x renovation gypsum alternatively masonite+renovation gypsum and moisture barrier. A prerequisite is that the wall is freestanding.

 

[jeppeknaster]

The problem is that plasterboard is no longer approved in wet rooms.

 

[spocks_beard]

If you use the LUX board, which is some form of styrofoam core, you can make cuts a bit into the boards, MathiasS on the forum has done it for a window reveal I believe.

 

[ppalm]

The problem is that cardboard drywall is no longer approved for wet rooms.

Yes, if you use a mat under the adhesive instead of goop.

 

[jeppeknaster]

excerpted from the new industry regulations www.bkr.se

"5.7 Panel Constructions
Panel constructions are common as substrates
for ceramic tiles.
Panels/panel constructions intended for walls
and floors must, according to the manufacturer, be
documented suitable/intended as a substrate
for waterproofing systems and ceramic tiles in
wet rooms and must be installed according to the manufacturer's
instructions.
Gypsum boards with a cardboard covering must not
be used in wet rooms. Applies to both floors and
walls."

This applies regardless of the type of waterproofing as I understand it.

 

[fn76]

Cardboard-clad gypsum board in the bathroom is out of the question. This is a new construction, and the KA will hardly approve gypsum.
I will get back with the results of the test of soaking and bending the aquapanel. This is for a summer house, so it's not being built daily. I might test it over the weekend.

 

[Mikael_L]

Could it work to wet the fiber cement board and then bend it?
I have c/c 150.

I wonder if it really makes any difference to wet a fiber cement board.
The material isn't affected by the water, is it?
When wetting gypsum to bend it, I've understood that it's the paper you want softer, not the gypsum itself...

Well, I don't know ... but I think ...

 

[Apprentice]

If the wall is within the waterproof layer, it can hardly matter if it is paper-covered, see it as a piece of furniture, within your four walls.