I messed up and failed to level bathroom wall properly in prep for tiling. I have installed kerdiboard 5mm but still a problem as wall is slightly bowed with some areas having a maximum10mm dip were wall meets adjacent walls at either end. Can I fill in and level with ardex am 100 on top of the kerdiboard?
Ardex am 100 on kerdiboard that is not level?
There are similar tiling threads here
