Failed Floor - Tile Advice

[J Sid]

Turn ufh up to max and leave for a day, measure the floor surface temperature. Have to check, but the max allowed is about 28 Deg over the whole floor with a max of 35 degrees over a max of 1m2 (wetroom floor as an example).
Need to find out what happened before you fix again....
I would use Ditra rather than HB

 

[On one]

Any sign of back skimming of the tiles?

 

[radim]

no sign of back skimming ....

 

[WetSaw]

Was the ply primed? Looks like the adhesive sucked into that before it stuck to the tiles.

 

[kevsalt]

ribbs in the addy are still visible ...looks like minimum contact to the tile is a poss cause

 

[Cris]

If tiles are porcelain there's a possibility that incorrect addy was used. Regular addy with no additive used ie porcelplus, can cause tiles to fail.... come across it in past. Especially if tiles were not back buttered

 

[Flintstone]

ribbs in the addy are still visible ...looks like minimum contact to the tile is a poss cause

I doubt it

 

[kevsalt]

why do you doubt it