Wetroom Leaking - Please Help!

[Meddler]

I also agree with Purdy and GAZ5518 that the shower enclosure frame may be the culprit.

Purdy’s suggestion may identify an obvious leak from the door / frame but also try using the shower without any water getting onto the door / frame. This may allow you to rule out any problems with the tiling / enclosure / drains etc. If the leak doesn’t show run the shower with the jet on the frame.

Frames should generally be sealed on the outside so that water can escape back into the shower enclosure. I cant see how your frame is sealed at the bottom but if you don't get an obvious dribble the water could be seeping from the bottom of the frame through the grout and collecting where the vertical surface meets the floor.

 

[mache]

A suggestion to rule out a leak in the waste would be to run a hose directly into the drain. No leak you know the waste is ok. You might then be able to try running the hose from different points on the floor. If you don't have the flow to high so the water just runs in the direction of the fall and doesn't over run other areas you might then prove if one area is suspect.

 

[mache]

Just to follow on if the floor proves ok then you might have problem through the wall tiles.