Tanking onto waterproof paint . ?

[Davesax]

I'm using the ardex system on a shower area which at the moment is untiled and with waterproof paint . I plan to remove the paint for other areas but can the tanking go straight on around the shower, or is it best not?

Also as the tanking is non porous , is it best to use cement based addy ? They are ceramic tiles?

Thanks for any help

 

[mikethetile]

when you say the shower is painted with a waterproof paint do you mean it has already been tanked in the past

 

[mikethetile]

and yes I would use a cement based addy

 

[Davesax]

when you say the shower is painted with a waterproof paint do you mean it has already been tanked in the past

No just paint on top of plaster .

 

[Colour Republic]

No just paint on top of plaster .

Do you mean vinyl silk paint? not waterproof?

 

[Davesax]

Well it's been their shower backsplash , he said it was ' waterproof paint ' . I'm removing most of it anyway.