Porcelain Porcelain Tiles Unbonded

[MW Smith Ceramics]

The tiles were not back buttered - should they have been?

It's a solid concrete floor which has been in for four years - the underfloor heating went in at this time and was turned on Dec 2015, it was only turned off to tile.

We turned it on at the lowest setting after two weeks.

The tiles are porcelain.

They are very powdery on the back - could it be this?

What adhesive would you recommend?

 

[Qwerty]

That's a rapid set cement. As well as no back buttering, possible dust on backs of tiles and PVA used as a primer, my guess is that you have probably mixed the adhesive too stiff but maybe also left it too long between trowelling the adhesive and laying the tiles. Most rapids only have a pot life of around 30 minutes and an open time of around 15-20 minutes

 

[MW Smith Ceramics]

I think tiling directly onto 6mm ribs of adhesive with with 600x 600mm tiles is asking for trouble.......I would be working with a 12mm adhesive trowel on the floor and on the the back of the tile off the high spot in the floor then working with an edge off that......you need 100% adhesive coverage on your tiles, I your fixing method and and possibly the wrong adhesive have caused you the installation failure here......how did you manage to fix large format tiles onto a 6mm bed of adhesive ??....surely there was a few lips showing

 

[Lee@emctiles]

Im guessing that these tiles have been purchased online? Now i dont see anything wrong with that (as we too sell online) but seems that the wrong tile fixing products have been purchased.

youve mentioned the UFH and its been commissioned, sorry if ive missed it but what type of screen is it?

 

[Tile Shop]

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*To clarify....this is not the post deleted by moderating staff, but by the poster themselves*

 

[One Day]

dusty backsides? Thermal shock? Very cold tiles can affect the bond?

 

[Old Mod]

The above post has been deleted.

This is not appropriate @Paul C.

Do not use the forum as a mouthpiece for the organisation that employs you.

tilersforums.com has no affiliation with Walls And Floors whatsoever!

 

[Chalker]

The above post has been deleted.

This is not appropriate @Paul C.

Do not use the forum as a mouthpiece for the organisation that employs you.

tilersforums.com has no affiliation with Walls And Floors whatsoever!

Nobody has said anything against the supplier. I've had quite a bit from this supplier, with no problems. I think the problem is with wrong fixing and thermal shock!
If I buy a boiler or a bathroom from a merchant, they don't tell me how to fit it.
That's what professional tradesmen are for

 

[Bill]

Nobody has said anything against the supplier. I've had quite a bit from this supplier, with no problems. I think the problem is with wrong fixing and thermal shock!
If I buy a boiler or a bathroom from a merchant, they don't tell me how to fit it.
That's what professional tradesmen are for

We don't know if a pro was used yet - but anyway, even if they did it themselves, I would still expect a certain amount of help from the shop.

 

[Old Mod]

Nobody has said anything against the supplier. I've had quite a bit from this supplier, with no problems. I think the problem is with wrong fixing and thermal shock!
If I buy a boiler or a bathroom from a merchant, they don't tell me how to fit it.
That's what professional tradesmen are for

Not saying anything has been said against the supplier Chalker.
If you did not see what was posted, then please do not make assumptions, that's how things get misinterpreted.
The post was not malicious in any way.