Badly installed tiles

[MrsSilenceDogood]

Thanks, everyone. I agree with Iwilldoit. Those squares that look like tiles underneath are the imprint from the back of the tile. I think he is also right that the movement in the chipboard is causing the issue along with a failure to use flexible tile adhesive.

 

[MrsSilenceDogood]

Am very keen to put tiles again, so scraping off the adhesive, adding tile backer board and re-tiling. My concern is that this will lead to a difference in level with the floor in the bedroom. Is there a solution to this?

 

[Nige F]

Poster #10,

The small squares are are obviously not impressions from the undersides of the larger tiles.

what are they then , Sherlock ?

 

[Iwilldoit]

Am very keen to put tiles again, so scraping off the adhesive, adding tile backer board and re-tiling. My concern is that this will lead to a difference in level with the floor in the bedroom. Is there a solution to this?

First screw down the original floor better, then screw on the backer board to within an inch of its life not sure if the backer will need a primer coat of something like this then use flexible adheasive - butter the back of the tile as well.
And no there is no other way and yes you will end up with a difference floor height.

Consider this -when you screw down the floor properly you may end up screwing through pipes or cable, then beings that its a bathroom you may need to get under there at some point for maintenance. I really would not put tiles down again. Good old lino - easily put down - easily changed if you get bored of it - warm to the feet. Same goes for plastic waterproof laminate although I am not sure if that can go straight onto your chipboard floor.