Must be bathroom season, the missus has decided A; Im enjoying life too much or B; My bank accounts getting too big ,so its a new bathroom.
Question is tiling best to strip off existing tiles with all the mess aggro and replastering that involves or to tile onto the existing sound tiles.
Cheers,
Bob

As long as they're sound and assuming it won't cause space issues round bath etc then tile straight over them

I could never live with the "bodge" of over tiling...Deffinately not proffesional

Get dirty and take the old ones off... do it properly!

I know many professional tilers and not one would take the old ones off, old ones make a much better surface to stick to IMO

Just got back from HR Johnsons with me tiles guys behind the counter said tile on tile as did a tiler waiting for his order. They did say to thoroughly clean with sugar soap and use a high polymer adhesive.
Cheers,
Bob

I'd take everything off myself and strip back to plaster, then start from there.
Not an expert but I do know how it feels when all the tiles fall off the wall while you're having a shower.

I tiled a kitchen for my niece and the tiles had already been stripped off. I had to re-plaster then wait for it to dry and seal it before I could even start the job and it was not a small area.

I'd you go over tiles then just make sure you don't have problems around door frames etc. Depends if it's tiled everywhere or just around bath and sink.

Also depends how many times tile has been put on tile on previous occasions.

If you decide to take them off the best tool for the job is a sharp wood chisel (and I hate tool abuse) just don't use a good one. With care you can get them all off without damaging the plaster beyond a few nicks. Then a steam stripper will take off all the old adhesive. Coat of PVA to re-seal the plaster and you're ready to go.

i do a lot of tiling and would generally say take them off.
a lot of tiles now are porcelain which are quite often close to the maximum weight you can put on plaster so if you then add in the weight of the old tiles and adhesive as well its to much.
if its stud walls remove everything, plasterboard and tile straight on to that. will end up a much better job. in the shower area use a tile backer board of some kind.
regarding PVA, don't use it, use a proper primer instead

get an sds drill with roto stop and a cheap 3"wide chisel from toolstation. get behind them and theyll be off in no time!
i did the kitchen a while back expected it to take 2/3 days took 1 1/2 hrs with the dewalt and chisel
wear goggles and gloves and protect anything you want to keep
Ray

I'd say take them off (in fact I recently did) but then I don't like bodges.

If you want it to look right pretty and for the missus to be happy ASAP then tile over the top but it's a bodge and you'll know it!!!

SWITNNO has decided the laminate is fatigued and wants the floor tiling.... the concrete underneath is far from flat.

Was thinking of a thinish screed with electric underfloor heating... (no idea why as there's a log burner going in)

Any good floor tilers here can tell me how easy it is?

Also, any HETAS peeps on here?

LG,
Steve

You need this stuff coozer http://www.wickes.co.uk/Latex-Floor-Levelling-Compound/invt/224669?tapopen=cm dead easy but you do need a drill mounted paddle to mix it to the consistency of thin cream, chuck it down roughly trowel it out and it self levels.
Cheers,
Bob

or you could use this, would need an admix to go over a heat mat though.
i would go the self leveling route if the floor isn't to far out as the heat mat will need covering completely before you start and the self leveling will do that for you. just make sure you don't mix it to thick