Advice pls: Floor has already had PVA!!

[natalleyem]

Hi all
sorry it does not have a grey coating nor any visible coating.
It is quite thick and yes I agree probably a chipboard.

Builders suggested just seal it and it would be fine to tile. In fact they were supposed to seal it because I asked for marine ply in the bathroom and as I didn't get it I wanted to be sure it was waterproofed - although it shouldn't actually get wet.

Perhaps you could recommend a good sealer/waterproofer that wont' react with any floor adhesive I might use?

 

[mikethetile]

you were right to ask for ply as thats the correct way to go

chipboards not a suitable substrate to tile too

sorry

 

[natalleyem]

Thanks for all your advice

so what to do about the PVA? Do I rub down the floorboarding/plaster?
Or as it's only a very watered down coating will it not matter and can I go ahead with using suggested adhesives?

and should I seal all surfaces?
I want to be sure water in the shower area will not penetrate tiles to ply/plasterboard underneath nor into floorboarding sheets and cause problems that could not be solved without ripping the tiling.

Sorry guys just want to get it right :mad2:

 

[mikethetile]

you will get away with rubbing down the wall but the floor will need either the floor replacing with ply or over boarding with 18mm wbp ply

 

[natalleyem]

can't replace the floor, as sheets are spilt between bathroom and bedroom area because of ensuite positioning within bedroom. Unfortunately, can't overboard as no tolerence over and above tile height 😳 -

only option I appear to be left with is to seal or not to seal before tiling.

 

[natalleyem]

Alternative to 18mm WBP possible?

Just wondering :idea3: if there is an alternative to 18mm WBP?

If we could get away with an alternative overlay product say max 6mm what would you recommend?