Hi,
Apologies, this is quite a long question... I am currently renovating my bathroom and soon to embark on tiling the walls with ceramic metro tiles.
When removing the old tiles, some of the plaster / skim underneath came off in patches to reveal a mixture of bare concrete and flaking original paint.
I have removed as much of the loose paint and plaster as possible but am wary of removing the whole lot as I'm 95% sure its lead based with a glaze over the top, so don't want to disturb it too much. The surface of the wall now appears to be relatively stable.
There's approx 2mm height difference between the concrete and the remaining plaster.
I was advised by a tiling shop to apply a thin layer of primer mixed with tiling adhesive 24 hours before tile installation to fill the gaps and create a level surface.
I have also purchased a tilemaster tanking kit for waterproofing purposes...
So my question is...
a) is this a reasonable approach?
b) if so, which order should I do this in? (gap fill with primer/adhesive mixture, then tank? OR tank, then gap fill?
Any advice would be greatly appreciated
Apologies, this is quite a long question... I am currently renovating my bathroom and soon to embark on tiling the walls with ceramic metro tiles.
When removing the old tiles, some of the plaster / skim underneath came off in patches to reveal a mixture of bare concrete and flaking original paint.
I have removed as much of the loose paint and plaster as possible but am wary of removing the whole lot as I'm 95% sure its lead based with a glaze over the top, so don't want to disturb it too much. The surface of the wall now appears to be relatively stable.
There's approx 2mm height difference between the concrete and the remaining plaster.
I was advised by a tiling shop to apply a thin layer of primer mixed with tiling adhesive 24 hours before tile installation to fill the gaps and create a level surface.
I have also purchased a tilemaster tanking kit for waterproofing purposes...
So my question is...
a) is this a reasonable approach?
b) if so, which order should I do this in? (gap fill with primer/adhesive mixture, then tank? OR tank, then gap fill?
Any advice would be greatly appreciated