In our future bathroom, we have an exterior wall where tiles previously covered half and plaster covered the other half. This has long been torn down, and the wall needs to be leveled before it can be tiled. How is this best done? I estimate the unevenness to be about 2 cm at most, plus a few larger holes. I am attaching a small picture of the wall.

- Can it be plastered? If so, how is it done, what should be used for mortar, procedures, etc., and what might it cost if a contractor does it? (4 sqm wall area)
- Install masterboard like the other bathroom walls, how do I attach this in the best way, tile adhesive?
- Any other suggestions?

Grateful for any help you can provide!
 
  • Uneven bathroom wall showing bare masonry with patches and a window, part of a renovation project to prepare the surface for tiling.
The easiest to work with is probably a gypsum plaster or a cement-bound filler. These have a more plastic consistency than a render mortar. If there is lightweight concrete underneath, it should be a low-alkaline product if you choose cement-based.
 
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Brorsson
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okay, how do you go about it when you need to polish? do you need a mesh in between or something similar?
 
Are you talking about plaster now? No, no mesh is needed. It's similar to plastering. Don't forget to prime with the primer prescribed by the supplier first.
 
Okay, I've probably got a pretty good handle on it all. Fun to try new things :-) I'll have to go to Optimera and shop a bit tomorrow then :-)
 
K
You don't need a primer in this case.
 
The first layer is on, I have to apply several layers since I am a beginner, otherwise quite okay to work with actually.
- How long does it need to dry before you can tile on it?
- How even does it need to be for the tiling to be good?
 
ktm250 said:
You don't need a primer in this case.
Does this apply to all gypsum plaster/gypsum-based filler?
 
tpsoft said:
Then the first layer is on, have to do it in several layers since I'm a beginner, quite okay otherwise to work with actually.
- How long does it need to dry before you can tile on it?
- How even does it have to be for the tiling to be good?
Drying time depends on the product and thickness, read the product sheet. And evenness is hard to describe, it also depends a bit on which tiles you're going to use.
 
Use maxit's gypsum plaster. The tiles to be put up are 10x30cm.

Approximately 2 weeks should be enough anyway; it's not a matter of months?

According to maxit's instructions, no primer was needed anyway, only if it was to be applied on smooth surfaces if I understood it correctly.
 
It is stated in the product sheet, right? 2-6 mm per day under normal circumstances, that is, 20 degrees and 65% RH.
 
K
jon_h said:
Does that apply to all gypsum plaster/gypsum-based fillers?
Well... I don't know about all manufacturers. I was a bit hasty there, but the product that was used was the one I was thinking of.
 
Plaster is not recommended against the outer wall (if it is below ground) as it will eventually mold.

If it is below ground, you can do the following:
I was recommended to first apply a layer of primer, plaster with the fixet, then primer again, and finally the tiles.
(Have asked a tiler).

If it is above ground, it is still convenient to plaster with the fixet.

Best regards,
/Magnus
 
if I may borrow the thread a little :D... if you have a basement wall now, what is most suitable to plaster with? c-putsbruk or?
I have some deeper cracks that need to be "chiseled" out and filled with something... and then the entire walls will be plastered.
/
M
 
as for me, it's on the second floor so it's no problem. what in the gipsputset can mold?
 
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