Plaster on cellular plastic indoors

[JohanRuben]

Hello

I am in the process of renovating a bathroom that we have made larger by combining it with a neighboring room. However, the level of one of the walls differs quite dramatically, missing about 6 cm. The walls are made of lightweight concrete with plaster on them. My idea was to cover the lower wall with cellplats to avoid applying a 6 cm thick plaster, and then plaster over the cellplats for the final layer.

Is there anything that says I can't do this? Or does anyone have a better idea?

I want a plastered wall all the way through, so I can have the same waterproofing system throughout the room.

Thank you in advance!

Best regards,
Johan

 

[Kroffe]

How wide is it that you're going to polish?

 

[JohanRuben]

Approximately 2 meters