cimstone quartz tiles lifting and bowing

[thedav]

hi guys has anyone got any knowledge on these tiles we laid 55 mts 10 of which are in a porch area all with Dunlop standard set adhesive , the area is south facing and has glass windows down one side floor to ceiling , after a year these tiles are popping up and are warped only in this porch area the 0ther 40 mts in rest of house is fine and also has 150 w underfloor heating but not in the porch, some one from an adhesive supplier has said its the incorrect adhesive , but were not sure , if its the heat from sun that's done it these were laid in 2012 and the problem occurred after the summer 2014, there wasn't any data sheets with these at the time or any advice on laying your thoughts on this are more than welcome cheers

 

[White Room]

The heat from the sun coming thru the glass can be a cause, to be honest you are have lucky the remaining tiles remain fixed within your property if a spf was used.

 

[Dave]

The heat fom the sun will be a lot greater than from the ufh .. I would say a combination of the heat and incorrect adhesive to hold the tiles , as imo it needs to be min S1 to S2 for Quartz. And some state S2 , 2 part combo.

 

[thedav]

the client reckons bal said rapid set would be ok it was a really hot summer aug 2013 happened after the they were laid march 2012 cheers

 

[swanman]

sounds like the wrong adhesive.
i would always use part 1 flex by granfix