Tiling on tiles / help

[Time's Ran Out]

Keith - The trend is for larger tiles and so you must consider fixing with a flexible adhesive - especially if the screed has underfloor heating!
With a tile of 600x600mm you should consider using a notch size of 20mm diameter semi circle with a 10mm notch which will provide a solid finish bed of approx 6mm. With some large tiles/or studded you will need to back butter the tile as well as spreading the adhesive on the substrate.
Remember only you can decide if the original tiles are well fixed enough to tile over, and as explained earlier make sure you have sufficient height under the worktops to remove/replace the appliances.

 

[ricmrc]

i've been called to look at a couple of floors that have been tiled on tiles, as problems have occurred after laying. on a floor id always, always lift whatever is already down to be on safe side.
one job i went to start and began lifting tiles to find that they'd been laid on top of vinyl tiles. the ceramic tiles came up no bother with a paint scraper, the vinyl ones were a different story lol.

 

[paulyoung666]

i was going to tile over wall tiles in my kitchen , i got a bit nervous about doing it , i am glad i did , as i have found that part of the tiles were put over gloss paint !! , needless to say they came away very easily with just a paint scraper :yikes:

 

[Alan.P]

i was going to tile over wall tiles in my kitchen , i got a bit nervous about doing it , i am glad i did , as i have found that part of the tiles were put over gloss paint !! , needless to say they came away very easily with just a paint scraper :yikes:

A valuable lesson learned and a lesson to others, preperation is THE key to a long lasting job, pppppp as they say

 

[muffinman]

You are the tiler never put your head on the line if you say they have to come up then they have to come up if customer wants them to stay down then you can not graurantee the work because you dont know the substrate its ok the customer saying they are ok but if it goes ring he will be after you , I would not take the job on if he did not listen to me dont for get you are the tiler not him sounds like he is after a cheep job Beware

 

[tfs]

Hi mate,

I would use Kerraquick with latex plus!

 

[tfs]

no need to prime fist if you use the keraquick, just make sure the existing tiles are sound and clean.

 

[muffinman]

subdtright is not sound

 

[tfs]

subdtright is not sound

Hi muffinman, how is it not sound?

 

[diamondtiling]

Hi muffinman, how is it not sound?

In defence of muffinman I would have to agree with him, you dont know if the tiles were laid correctly, you cannot know if the original tiler used acrylic bond or pva or any sealer. Tapping the tiles the see if they sound ok is not good enough, your customer wants a first class finish and he wants you to provide it over a surface that you have to guarantee is ok, Why put yourself in that position? If he does not want to pay you to take it up I would walk away, it could be lifted in a day and then you could inspect the floor as that may not be right also. Your the tiler providing free impartial professional advice and he is not listening to you. These jobs are just not worth the hassle.