Tiles Curled???

[Ajax123]

Hi All

I have been to see a guy today who is understandably gutted about the fact his tiles have failed over a Gyvlon screed and at the moment is being directed to the Gyvlon being the cause.

I have checked out the screed itself and am confident that it is fine. In terms of post inst treatment he has done everything I would have expected - sanded\vacuumed/Dried/UFH comissioned etc etc. No joints were necessary in this one. Any way to cut a long story short (most unlike me I know) he has done the screed by the book.

He has then used a water dispersible epoxy primer and Ultra rapid set SPF addy with Ultra Flexi grout. Again no issues with these as far as I can tell.

The tiles themselves are white speckled with silver flecks like a reconstituted material (possibly resin tiles?????). They are 12mmx600mmx600mm. They have physically curled some look like square dishes. the addy has split between the screed and the tile so the primer has done its job but has essentially failed.

Question is - has anyone seen this sort of curling before and can anyone say what is likely to cause it. I have not come across this before although I know there are some potential issues with resin backed tiles.

Thanks in anticipation.

Alan

 

[DHTiling]

The heat in the UFH..

IMO these Resin based tiles are not suitable for use over UFH Alan..

 

[The Legend; Phil Hobson RIP]

Alan I Think there tiles are the resin type, I have heard of this curling before. Moisture ingress in tile perhaps

 

[Spud]

what type of adhesive was used ?just re read the post ,ultra rapid set flexi ??? were the tiles sealed with any type of product ?

 

[The Legend; Phil Hobson RIP]

Sorry Dave, my slow typing again😳

 

[DHTiling]

We had a similar thread to this a couple weeks ago and the same there..600x600 tiles and resin quartz..

The tiles have a very low moisture absorption rate , so i don't think it is water related but the heat is deffo my bet..

 

[Ajax123]

what type of adhesive was used ?just re read the post ,ultra rapid set flexi ??? were the tiles sealed with any type of product ?

Not sure if they were sealed or not - think underside won't have been. It's a real *beep* one this cos I know the guy has done everything he should have done from the screed point of view. Looking at the tiles that are still in place it also looks like the tiler has done a real quality job. Blooming tiles are trash though IMO.

 

[DHTiling]

He needs to get the tile supplier involved..

 

[Ajax123]

We had a similar thread to this a couple weeks ago and the same there..600x600 tiles and resin quartz..

The tiles have a very low moisture absorption rate , so i don't think it is water related but the heat is deffo my bet..

I have a sample of the tile Dave. If I can get to see you on Friday perhaps you could have a look t it and let me know if it is the type that would be prone to issues with UFH.

 

[DHTiling]

No probs... if i get my finger out i should be able to pop over to that job and see the tile and the screed poured..

 

[Ajax123]

Alan I Think there tiles are the resin type, I have heard of this curling before. Moisture ingress in tile perhaps

Not convinced by the moisture angle really as I did some spot checks with a moisture meter and could not get a reading. I would expect if it was moisture related I would get a reading.

 

[The Legend; Phil Hobson RIP]

😳I just finished a job in these, 300x300 on electric mat. Hope its OK didn't know about the heat issues:yikes:

 

[Ajax123]

😳I just finished a job in these, 300x300 on electric mat. Hope its OK didn't know about the heat issues:yikes:

oops!

 

[jay]

sounds like a tile failure as Dave said:mad2:

 

[Ajax123]

would these type of tiles be covered in BS 5385 part 5 - i.e. agglomerated stone tiles.

 

[DHTiling]

I would have thought so.. yes.. they are a man made composite.

 

[Saltire69]

😳I just finished a job in these, 300x300 on electric mat. Hope its OK didn't know about the heat issues:yikes:

I did the same about 18mths ago. Not heard anything from customer about it and was there last month tiling a step for them.

 

[Ajax123]

I just looked on the B&Q website (of all places :lol🙂

All of their conglomerated tiles do say they are not suitable for underfloor heating. Don't think these came from B&Q but they look very similar so looks like Dave's the man again and I can point the customer in that direction.....the unsuitability for UFH not to B&Q.......

 

[DHTiling]

It's a shame the tiler was not informed in the first place...

I still think they should involve the tile supplier.

 

[White Room]

Still think the supplier has some responsibilty when supplying their tiles

 

[Ken Bruty]

I agree, they should be fit for purpose, if not, they should be labelled with a warning imo.

 

[Rob Z]

Alan, something in the back of mind (from a training seminar years ago) tells me that these kinds of tile have to be set with epoxy-similar to the green "marbles" (not really a marble).

 

[Rob Z]

Alan I Think there tiles are the resin type, I have heard of this curling before. Moisture ingress in tile perhaps

Phil, whoops, I see you already said what I just said. :mad2:

 

[nybor62]

have just looked at a few sites of suppliers of conglomerate tiles. they all say not recommended to use with ufh, back to the supplier i think

 

[jay]

i have seen this type of tile do similar curling near glass sliding doors in summer only tiles in direct heat with no ufh:ban:

 

[DHTiling]

Just had confirmation from CTD that they already know about this problem with resin conglomerate tiles.
So until i hear any different from CTD or any other tile supplier then i advise members to not use any type of tile like this with any UFH jobs.

 

[Ajax123]

Thanks for the replies and the info guys.

I will be informing the customer that he should take this straight back to the tile supplier. I don't know if the tiler has any culpability but as the client selected the tiles and was apparently told they are fine with underfloor heating then I guess the tiler is covered. I am also running a test on the sample to see what happens to it when I heat it up to the sorts of temperatures you get with UFH - just cos I can. Will let you know.

 

[Diamond Pool Finishers]

yes i found this curling affect out when the mrs fancied them in my wet-room, so steered her away are they Gulf-stone or something like that!!

 

[Diamond Pool Finishers]

and a fella on another forum used some round a fire-place ,and he reported that they gave-off bad smelling fumes :yikes:

 

[Ajax123]

yes i found this curling affect out when the mrs fancied them in my wet-room, so steered her away are they Gulf-stone or something like that!!

have no info on who or what the actual tile is or the manufacturer but they look remarkably similar to B&Q conglomerated white resin quartz thingys but they are a bit thicker.

Is there anywhere independent that anyone knows of that I can pull off something that says that these tiles are not suitable and why?

 

[Ajax123]

and a fella on another forum used some round a fire-place ,and he reported that they gave-off bad smelling fumes :yikes:

they smell orrible when you cut them - burning plastic fumes:yikes: