Cracked porcelain

[Ajax123]

Pound to a penny if you lift the tiles the screed will be cracked following the same line. This means the screed has become unsound and should be repaired. Unfortunately it is not as simple as that if the screed has no joints across door thresholds and the like repairing it will probably just lead to the cracks moving and rebreaking. I think your best bet is to repair them as best you can using a flexible epoxy resin to help reduce any vertical movement then replace the tiles with an uncoupling membrane. I don't think this will give you much choice.

 

[rj1884]

Thanks for your reply. Putting a membrane down would cause problems with height I assume when fixing the new tiles down.

 

[Qwerty]

Thanks for your reply. Putting a membrane down would cause problems with height I assume when fixing the new tiles down.

Very little extra height...... roughly 4mm higher

 

[rj1884]

Hi. Just spoke to the guy again and he said that the first crack appeared soon after the house was built and have kept appearing upto about a year ago.
Also what would be from your experiences the best way to remove porcelain tiles in this situation.
Many thanks

 

[AliGage]

What area is there in total? I think i would be approaching the subject of a complete rip out, repair, decoup and fix.
If the cracks have been appearing ever since built there is no guarantee that after repairing the ones evident at the moment that more won't appear.

 

[rj1884]

Hi. The area is about 12 square metres. Rip out is not an option. I've explained that more cracks may appear in different places, so he's aware. Only option is to repair cracked tiles.

 

[jonnyc]

if you dont have enough height to play with , ditra may well be not an option.
try using pecilastic or similar from trimline that is only 1mm thick. cut a piece of mat under tile that bridges crack and then bed tile in s2 or even better rubber crumb adhesive .
this is not a guarantee and you must stress that but i have done this dozens of times with good results.

 

[mz30]

Door ways and porcelain ,I always put an expansion between them on new builds have seen it time and time again.

 

[White Room]

Topps do a homelux decoupling, it's less than 3mm I believe.

 

[rj1884]

Thanks for the replies. Where can I get some of that pci pecilastic from. Sounds ideal. Cheers Whitebeam I'll pop in there tomorrow and have a look.