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AskAsk

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neilmcl

Is there supposed to be a picture?

pramsay13

I would just break off those tiles and put new tiles in their place. 

stuart45

You can use plaster or sand/cement to fill the gap. Small angle grinder with a diamond blade with cut through a tile. 

stuart45

I think you would be lucky to get a clean break like that. There are hand tile saws you might be able to get in there. Or just break them all out and use new tiles.

nofoollikeold

1. Scoring a line across won't help to break the tile where you want, it will probably just crack all over.
2. You need to cut a groove in the tile right through to the adhesive.  Then when you lever the lower piece off the wall there will be room for it to move before cracking the piece above.
3. If you've got the patience, get a half round tile file, and use the edge to create the groove.  
4. Or you could use a 6mm hollow  diamond drill bit (used wet) to stitch a series of hole across but just below the line you want, then you would have less work to do with the file.

nofoollikeold

Before buying a Dremel or a grinder, have a look at "multi tools".  Very useful thing to have for all sorts of jobs - sawing timber close to a good surface, cutting pipes in inaccessible places, sanding small details.  You don't have to spend a fortune - have a look at Screwfix 8100P.  You can get both carbide coated and diamond blades for these, although the diamond ones are quite expensive.  Just the thing for cutting tiles on odd jobs.  

FreeBear

A chisel (I'd suggest s "Scutch chisel") under the right hand edge. A couple of taps with a small hammer, and the tile should just pop off along with the adhesive - It is on gypsum plaster which is usually pretty soft. Build up the surface to the left with either a weak sharp sand & cement mix or bonding plaster, then stick new tiles on. Trying to get neat clean cuts on the tiles in situ is going to be near on impossible.

Norman_Castle

AskAsk said:

if i have to fill that hole in, then i will need to get a handyman round as that is a bit too much for me.  i am thinking that needs to be filled, otherwise the new tiles don't have enough back area to bond to and any knock on them will bring them down.

Buy a few cheap tiles to fill the gap then tile on top of them.

flashg67

AskAsk said:

Norman_Castle said:

AskAsk said:

if i have to fill that hole in, then i will need to get a handyman round as that is a bit too much for me.  i am thinking that needs to be filled, otherwise the new tiles don't have enough back area to bond to and any knock on them will bring them down.

Buy a few cheap tiles to fill the gap then tile on top of them.

i can't see how this would work.   it would be better to fill the gap with cement or plaster.  i have never seen tiles on top of tiles.  seen wall paper on top of wall paper, but i don't think you can tile on top tiles??

You can tile on tile, seen it many times (and done it!) . Personally, I'd go with knocking at the tiles off and filling the gap with bonding plaster. It doesn't need to be perfectly smooth - building the plaster in layers will help stop it slumping/falling off. I'd say nigh on impossible to satisfactorily trim tiles in situ

FreeBear

AskAsk said:  it would be better to fill the gap with cement or plaster.  i have never seen tiles on top of tiles.

Tiling over a glazed ceramic tile is just asking for trouble. The adhesive won't have anything to grip to unless you buy a tub of good quality primer (FeBond Blue Grit ?). Slapping in a bit of cement/sand or bonding plaster is going to be quite a bit cheaper.

Relieved that no one has suggested using expanding foam (yet) - Please don't. It is just bodging.