Upstairs wet room leaking due to tray sinking...

[Colin O'Donnell]

Hi there, we fitted a large Fiora shower tray into our upstairs bathroom a few years ago when we got the house refurbished. (pics attached) Problem is the weight of the tray has caused it sink into the wooden floor beneath, creating a 1mm gap between grout and tray and leaking a lot of water into the room below...

We had our tiler out to take a look and he is recommending a Silicon fix with a plastic trim added to protect the area...

He has done excellent tiling work for us, but we are just a bit worried as we need a fix that stops the leak completely - for good!

These are the products he has recommended...

Johnsons PRG1 Ceramic Bath seal Trim White Gloss - quadrant | eBay - https://www.ebay.co.uk/i/152603269758?chn=ps

MH Ivory Finishing Strip Tile | Topps Tiles - https://www.toppstiles.co.uk/tprod45850/mh-ivory-finishing-strip-tile.html?utm_source=google-shopping&gclid=CjwKCAiA5qTfBRAoEiwAwQy-6eRZuepPky1mRfyME2hUaKJLM710yfe_-NGqRQKqgz_HX9bDGB5pwxoCGAMQAvD_BwE&gclsrc=aw.ds#BVRRWidgetID

Any advice gratefully received!

Col

 

[WetSaw]

You can try bodging it but deep down you already know that you've got to find out why the tray has dropped and repair it properly.

 

[Colin O'Donnell]

Ha! Yes, face your fears etc! We think the tray was fitted on a wooden floor. Any ideas on what it should be set on to?

 

[One Day]

I had 10 mm of movement on a wet tray I installed (thanks to building settlement the entire floor dropped) and no leaks.
That was with proper taping and waterproofing though.
1mm of movement should not create a leak.
That job has to be done again, properly.
Anything else is a temporary bodge.

 

[macten]

You sometimes have to brace a floor before a tray goes in. Easy to identify and sort at first fix stage - nightmare now, unfortunately.

 

[WetSaw]

Looking at the pictures again and it looks like it's dropped more than 1mm, it's been leaking a long time and has been "repaired" before by the look of the Silicon.
Do you have any pictures of the room stripped out?

 

[Waluigi]

Looking at the pictures, you have a cracked tile, a cracked grout joint and a tray that has dropped.

If the wall wasn’t tanked then at this stage it’s probabky ruined. Unfortunately when it comes to showers, the term ‘fix’ can’t really be used. It’s a complete rip out and start again.

Shower tray manufacturers usually suggest bedding the trays on to ply wood. Cement board or tile backer board would also be suitable. Maybe this wasn’t done? Maybe it was laid onto chipbord, the chipboard got wet and the tray has then sunk. The wall should be tanked before re tiling.

 

[Colin O'Donnell]

Pretty sure the walls were tanked. We get a lot of vibration through the house from double decker buses passing outside. It's caused cracks in that bathroom (other side) and other parts of the house. Could that be part of the problem?

 

[Waluigi]

It’s difficult to say, potentially yes. It won’t be apparent until it’s all come out.

I would thing about a sheet membrane for tanking when it’s re-done.