Leaking walk-in shower tray

[max2016]

Hi,

Just wondered if anyone had any advice on this. We've had a walk-in shower fitted as part of a bathroom renovation. The showed used a pre-formed tray which was fitted into the floor then tiled over. After about 6 months we noticed some wet patches on the ceiling of the room below. The builder came back, and had a look, along with his tiler. They reckoned that the grout had cracked, water was getting under the tiles, then the tray was filling up (under the tiles) and water was leaking over the edges, where the waterproof tray met the regular floor. They removed the tiles & re-tiled & re-grouted.

However the problem still seems to be occurring, and I'm fairly sure I can see cracks in the grouting again. The builder is coming back to have another look & a chat. Are there any common reasons why the grouting would be cracking again, just so I can be a bit more informed when meeting with the builder? Someone suggested the tray could be flexing, but surely if they used a pre-formed tray, it should be strong enough not to flex?

Thanks!

did you resolve this? having the exact same issue, logic tells me that wetroom trays aren't really 100% waterproof as water will always find its way through the grout.

 

[foxhole]

did you resolve this? having the exact same issue, logic tells me that wetroom trays aren't really 100% waterproof as water will always find its way through the grout.

Start your own post this is six year old.