What to use to tile onto plywood?

[WDavison]

Just stripped out a tiled shower cubicle, the tiles were put onto plywood, and had an ok bond. Ive overboarded with Multipanel now but theres a half foot gap at the top that wants tiling with some porcelain tiles.

I cant really replace it with cement board for various reasons.

I have Primer G and Keraflex s1 already for the plastered walls as only seem to be able to get Mapei stuff around here.

What can I use to securely stick these tiles?

Cheers

 

[WDavison]

Its Keraquick s1 not Keraflex s1 that I have already, my mistake.

 

[One Day]

Tiling to plywood? I would suggest one of these:

Seriously though, it's just not a good idea - ever.
TTA URGES AWARENESS OF CHANGES IN BRITISH STANDARD BS 5385 PART 1: 2018 WALL & FLOOR TILING - Tilezine - http://www.tilezine.co.uk/tta-urges-awareness-changes-british-standard-bs-5385-part-1-2018-wall-floor-tiling/

 

[WDavison]

Yes I know its not ideal but I have no choice. Theres no other way. So need to figure out what people use to do it well.

The cubicle I had just ripped out was tiled by someone onto plywood over 15 years ago, and they wernt that easy to chisel off. Literally had to get the sds out in some places.

 

[One Day]

Your problem will be that 15 years ago, plywood was generally good with a decent thick top layer of hardwood.
Nowadays it is so dodgy that it's just not worth the risk.
Personally, I would never tile direct to plywood in any circumstances.

 

[Just Rizzle]

the only ply that you could possibly tile on to is sp101 flooring grade ply used in the LVT industry

 

[WDavison]

ive replaced what I can with Hardiebacker but theres still a 2m by 15cm strip to tile. This cant be replaced.

Anyone used Mapei Eco Prim Grip or Primer S on plywood?

I really need a way to make them stick with the best chance possible.

 

[WDavison]

Your problem will be that 15 years ago, plywood was generally good with a decent thick top layer of hardwood.
Nowadays it is so dodgy that it's just not worth the risk.
Personally, I would never tile direct to plywood in any circumstances.

its the same 15 yr old ply Im tiling on to. Just a small section of it.

 

[WDavison]

Got the plywood area down to 10 x 200cm.

latex plus + keraquick

plus

Bal sbr if I can find it where I am, if not is there a similar primer to look out for?

 

[Brian the Tile]

If you are tiling onto ply nip into topps tiles and get some fibre plus adhesive they won't come up

 

[Perfect Tiling]

Just a thought.......if your'e tiling in a shower cubicle why dont you tank the whole area first with a waterproof coating such as Ardex. I always tank shower areas with Ardex or Mapie aquadefence. These stick to absolutely anything and surely this will mean that your'e not actually tiling onto the plywood. Its always a good practice to waterproof shower areas anyway......

 

[Waluigi]

Too risky with ply nowadays. Just not worth it.

Think of the cost to replace if it fails vs the cost to do the correct prep initially. Ripping up and replacing after installation is a whole world more money.

 

[Unused Account 1]

Ditra