Tiling uneven wall

[JohnTUK]

Hi, looking for some advice for a bathroom wall that needs tiling.

Top half of the wall is wallpaper on flat decent plaster, the bottom half was tiled.

When I’ve taken the tile off there’s a lot of cement like material (possibly old adhesive).

This is around 1/2” tick, more in places and protrudes our further than the flat wall above it.

Any ideas on what I can do?

Pics are attached. Any help or advice would be appreciated!

Thanks

John

 

[bobasd]

chip off all that adhesive back to the backing plaster. use an sds + chisel bit if you have one.
then photo and come back on here.

is this problem is in the wet wall areas ? do you have any kind of enclosure?

 

[JohnTUK]

Hi, I can chip off the adhesive but how would I then fill the bottom half of the wall and make sure it’s flush with the top?
I’m tiling the whole wall so don’t really want to have to re plaster everything.

 

[JohnTUK]

And yes this will be the wet areas, where a shower bath will go.

 

[foxhole]

Yes that’s not adhesive but cement, old school tiling, can be a real slog to remove , can be patched up after with bonding plaster.

 

[bobasd]

that stuff whatever it is shouldnt be to difficult to takeoff with an sds spade bit or even a hammer and brick chisel. its not set on masonry but a backing plaster.
thats not old school tiling where the tiles were buttered with a slurryand set on a semi wet sand and cment render sprinkled with dry cement powder.
that looks more like a thick blob flattened out with tile pressure.but theres no signs that the tiles gripped as it set up.

its a dead neat job that must have taken a long time.

you can use a sand and cemnt render in the wet areas and as above bonding in other areas. or if you dont want to plastermaybe correct thickness backer board will pull the wall out level in the wet areas?