Quartz tiles problem

[Shazzapat]

Hi - new house with underfloor heating layed on top of anhydrite screed. Quartz tiles bought from online retailer. Floor primed with p51 - ardex x77w adhesive used and ardex fl stormy mist grout used. After a few weeks tiles started to lift at ends now 4 months since laying most have lifted. We checked with retailer who are insisting they are suitable with Ufh and saying it must be something we have done. Identical house next door with Ufh but normal porcelain floor tiles and no problems. Does anyone have any ideas. Thanks

 

[Mr T]

did you slowly introduce the heat on ufh or did you wack it straight up?

 

[Gazzer]

did you slowly introduce the heat on ufh or did you wack it straight up?

Oooooh he is back !

 

[Mr T]

lol

 

[Jeff the tiler]

Look at some recent threads on quartz tile problems there is some great info that has been given recently on Quartz and its suitability for UFH.

 

[Peter]

Was the floor properly sanded and vacuumed before being primed? Quartz usually specifies a two part adhesive as well.

 

[Concrete guy]

How thick are the tiles?

 

[Protilers]

the chemical make up of quartz is predominantly resin...not great with UFH of any kind IMO....

 

[gamma38]

the chemical make up of quartz is predominantly resin...not great with UFH of any kind IMO....

I don't put the two together, quartz or UFH but not on the same job. Too much of a risk I reckon.

 

[Ajax123]

Was the online retailer from the north east by any chance.

Quartz tiles are often not suitable for use with underfloor heating

 

[Lee@emctiles]

What was the size of the Quartz and what size grout joints?

 

[Shazzapat]

Hi - new house with underfloor heating layed on top of anhydrite screed. Quartz tiles bought from online retailer. Floor primed with p51 - ardex x77w adhesive used and ardex fl stormy mist grout used. After a few weeks tiles started to lift at ends now 4 months since laying most have lifted. We checked with retailer who are insisting they are suitable with Ufh and saying it must be something we have done. Identical house next door with Ufh but normal porcelain floor tiles and no problems. Does anyone have any ideas. Thanks

screed floor was sanded and vacuumed
company Is based in Leeds I believe
we did slowly introduce Ufh

Where do we go when supplier won't help or return calls?

 

[DHTiling]

screed floor was sanded and vacuumed
company Is based in Leeds I believe
we did slowly introduce Ufh

Where do we go when supplier won't help or return calls?

You can go to Trade and Standards ...>>>>> Trading Standards Institute - Home page ... or if an inspection is required then you can go to the TTA ... >>> For tiles, tilers, tiling and the tiles industry: The Tile Association

 

[jlktiling]

As others have said, the majority of Quartz tiles are cheap imports and have too much resin in the make up to be suitable for any type of ufh.
And you have to use low water adhesives, as they suck up masses of water.
Hence i would use bal supercover flex & add ad1. high latex content!

 

[Concrete guy]

As others have said, the majority of Quartz tiles are cheap imports and have too much resin in the make up to be suitable for any type of ufh.
And you have to use low water adhesives, as they suck up masses of water.

This resin thing is a misconception, most manufacturers are doing their best to reduce resin content as it's the single most expensive component when producing engineered stone tops. So cheap tops are likely to have too little resin not too much.

The water one is new to me though - who told you quartz sucks up masses water? The single biggest selling point of Quartz is is almost complete lack of absorption, it's why it passes to many bacteria and hygiene standards.

The main problem with quartz tiles in the UK is anything less than 15mm thick is not really suitable for flooring, it's not structurally stable enough - add UFH to that and it's a recipe for failure.