tilling over tiles why not

[jay]

That is one of the main reasons there are so many problems in the industry the suppliers are mis informed and are only there to sell

 

[Perry]

That is one of the main reasons there are so many problems in the industry the suppliers are mis informed and are only there to sell

these were the importers selling them direct they should know better

 

[scott mccoll]

would be lying if a said a have never done it before but just repeating what stewart said on previous page,only did it for the contractors i was working for at the time(their instructions) to be honest dont think most contactors give a hoot! any comebacks would be theirs to shoulder the blame.Any other time i have always advised cutomers to remove existing tiles , at the end of the day its YOUR reputation thats on the line.

 

[Spud]

Tile on tile was recommended until very recently by the tile association , if the first layer was well fixed on a rendered sand and cement substrate or cement backer board substrate I would have no problem fixing new tiles on to it and I have tried to remove tiles off of render before and you would absolutely potty to even try it, not all tile installations are even fixed with tile adhesive some were fixed with sand and cement try removing a ceramic tile fitted this way and you will be in for a surprise
Its not best practice to tile over tile and in most circumstances I would recommended removing the old ones first but in certain circumstances it is fine to do so

 

[Rizzle from the Portizzle]

thanks for all your replies enjoyed reading them a few more questions why do all adhesive manufactures ardex bal mapie and so on happly recommend adhesive for tiling on tile wall and floor . why are there no british standards on this .if adhesive is sold for this use . when tiling on to tile does this become stronger like laminating ply .when tiling walls after grouting how much weight then becomes floor loading .its good to think.once we believed the world was flat:yikes:

 

[The Legend; Phil Hobson RIP]

Ray I think you are missing the point mate, no disrespect to you, or any other poster on this thread. Gary and others summed it for me. The question was never will tile bond to tile, as you say many well known adhesive manufacturers have products that will adhere to a tiled surface.

The question is, how well are the tiles bonded that you are tiling to? also who fixed them? what adhesive did they use? what was the original substrate? the questions never end.

Why not strip the old tiles, see what the substrate is, and does it require any prep work? we are no longer fixing 150mmx150mm tiles, more likely 600mm x 300mm or larger. I have been a professional wall and floor tiler man and boy (44yrs) and have seen and heard it all.

Lets try and give good advice on this fine forum, or just not bother posting.:smilewinkgrin:

 

[Gazzer]

The adhesive manufacturers will only guarantee that the adhesive will stick the new tile to the old....They will not and they can not state that the original tiles are sound enough to take the weight of the new tile.
A recent conversation with a well known tile company stated to be that a plaster skimmed wall was fine to be tiled with tiles weighing 70kgs per m2.....what they really were saying was that the adhesive they would supply would stick the tile to the plaster........whether the plaster de bonded due to the weight was of no concern to them and nothing to do with them. That was a matter to take up with the plaster company.

 

[Rizzle from the Portizzle]

for good advice to be heard bad advice has to be talked about:yikes:

 

[Muse2k8]

Even Bal technical services have recommended not to tile onto tile. As above you have no idea how well the tiles are bonded and even if you test a few how are you sure you havnt just tested the only good tiles? You would need to test all of them to be sure.


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