Tiling Abacus Shower Tray

I recently installed a new ensuite walk in shower using Abacus Single Fall tray former. I had to build a timber raised platform to sit on the concrete floor (in a flat).

I topped with 18mm chipboard and then bedded it down (sorta) using flexible adhesive. The tray former got bedded down ontop (30mm thick former). I added backerboard to the side of the tray.

The tiler fitted tiles and it looked great for a month until I noticed a slight leak to the baseboard in the same wall on the other side.

It looks like the side ledge to the tray has pulled away from the tray and caused a long line where water can and has seeped through when the shower is on (photo attached).

I think where the tile sits on the former ledge it's levering the side away (as the raised platform has 10mm backer board attached to the side) - I can only assume over time stepping on it the tile has acted as a lever and pulled ledge away.

I have ripped the tray tiles up and plan to refit. I will not use the Baker board on the side this time to reduce chance of pulling away. Whilst re doing it is there anything I should change regarding the platform ie chipboard to hardibacker or ply - what thickness?

I'm a total diy beginner and picked up stuff along the way and YouTube but much to learn. Be kind to me on here hahahahah!

You deff have movment there you realy need to beef up the platform and tray
go over the top and make sure the frame is well attaced to the walls. tape and tank it
then make sure you use a good flexable adhesive and grout..

What would u suggest to do that?

Get a good tanking kit, jacko do a good one with the primer, tape
internal corners and the solution to paint on. then a good flex
addy Bal or ardex and a good flexie grout again bal or ardex
but before all that make sure the base is realy stable

bsc ceramics said:

Get a good tanking kit, jacko do a good one with the primer, tape
internal corners and the solution to paint on. then a good flex
addy Bal or ardex and a good flexie grout again bal or ardex
but before all that make sure the base is realy stable

Click to expand...

bsc ceramics said:

Get a good tanking kit, jacko do a good one with the primer, tape
internal corners and the solution to paint on. then a good flex
addy Bal or ardex and a good flexie grout again bal or ardex
but before all that make sure the base is realy stable

Click to expand...

Would you suggest i remove the chipboard and replace with 18mm ply or hardie? before tanking

Yes defo hardie or similer

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