Tiling on smart ply.......

[Saphiretiler]

Hi all.

I am about to start and job and the Tiles are 200 x 100 ceramics. They are asking me to tile directly onto smart ply. What would be your recommend prep. I am thinking tile master prime and grip followed by white star or ultra slow set white adhesive. I am fully aware that over boarding it with plasterboard is the best but they are reluctant to do this because of cost, time and lost room size.
Thanks in advance

 

[Time's Ran Out]

1st what’s smart ply?
2nd do what’s correct or don’t do it!

 

[PaulSmith]

It's still OSB.

 

[Andy Allen]

It's ply, with an IQ of 160. !!...

 

[Time's Ran Out]

Ok I’ve just googled and it is OSB.
So for me I’d overboard or not do it.

 

[Old Mod]

Just overboard with 4mm wedi.

 

[Time's Ran Out]

But that will reduce the room size by 8mm both ways.

 

[Old Mod]

A lot less than 20mm John.

 

[Time's Ran Out]

Hi all.
I am fully aware that over boarding it with plasterboard is the best but they are reluctant to do this because of cost, time and lost room size.
Thanks in advance

 

[Old Mod]

Yeah I read it mate.
But to say 4m wedi will reduce the size of the room, while technically correct, it’s a croc! No one will notice unless it has bespoke wall to wall fixtures. If the OP had gone and just used it, no one would have been any the wiser.