I have started building the bathroom walls. I am using tongue-and-groove leka blocks, 600x300x86mm, which are hollow for water or electrical pipes. Against the outer wall, the material sequence is as follows:
Tile - waterproof layer - leka - 30mm air gap - building plastic - studs and insulation - exterior panel.

Problems arise at the window; I don't know how to proceed. The wall must somehow connect with the window if I am to tile the reveals. Should I buy some other type of leka or brick and build around the window, or how should it be done? Does anyone know?
 
  • Cross-section diagram of bathroom wall structure showing layers: tile, waterproof layer, Leca block, air gap, plastic, studs with insulation, siding, window placement.
No one knows?
I'm thinking about buying some cheap tiles to glue between the cinder block wall and the window, then I'll lay down the moisture barrier and tile as usual.

Does anyone have any thoughts on this?

:)
 
Why not use a board, like gypsum or fibercement?
 
Fiber cement might be something :) Gypsum doesn't feel relevant since it would be between double moisture barriers in that case. (Even if it's ventilated) THANK YOU for the tip :)

How do I attach that board? I'm using Maxit sanerings fix to mortar, is it suitable for fiber cement as well? And maybe some sealant against the window frame?
 
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