Just been to look at this hoping remedial work would sort it but unfortunately requires ripping out and re-doing properly.
From what I can see looking up from the garage is a sheet of ditra laid on the floorboards (no sign of it being stuck down with spf) then 12mm thick MDF on top of that - all this on a floating floor.
Can put my hand up and feel the backs of the brown skirting tiles that are dot and dabbed at the very tops where the PB ends, below that there is nothing.
Other areas of the bathroom have tiles holding on with grout.
From what I can see looking up from the garage is a sheet of ditra laid on the floorboards (no sign of it being stuck down with spf) then 12mm thick MDF on top of that - all this on a floating floor.
Can put my hand up and feel the backs of the brown skirting tiles that are dot and dabbed at the very tops where the PB ends, below that there is nothing.
Other areas of the bathroom have tiles holding on with grout.