Old plaster came away, render looks solid and flat what do i need to seal it with prior to tiling?

[WetSaw]

It's often easier to overboard, you then have a perfectly flat and plumb surface.

 

[paul cumpo]

Ok ive made the decision to remove all the bonding or first skim (whatever its best know as) and go back to the brickwork. Ive done a fair bit of plasterboarding but never aquaboarding and to me this looks an expensive option and could be tricky to do around the window area so thinking it might be cheaper to plasterboard and then tank the area around bath/shower.

 

[Qwerty]

A good option. This way you can ensure levels and is actually the most cost effective way

 

[paul cumpo]

Ive never tanked an area before.does it consist of taping the plasterboard joints and then painting the area with a waterproof sealer?

 

[Qwerty]

Ive never tanked an area before.does it consist of taping the plasterboard joints and then painting the area with a waterproof sealer?

Pretty much yes. A good kit for DIY use is Mapei Mapegum WPS which is widely available all over the place. Good demo videos on YouTube

 

[Time's Ran Out]

At £50 for a tanking kit it would be cheaper to fix Wedi board .

 

[Dumbo]

At £50 for a tanking kit it would be cheaper to fix Wedi board .

But is it cheaper once you tape the joints and waterproof screws ?But I'm with you in that i would fix tile backer board if I was at that point .

 

[Qwerty]

At £50 for a tanking kit it would be cheaper to fix Wedi board .

Add p&p into the equation if nowhere local, DIYer paying retail prices and it may well not be cheaper

 

[Perry]

You don't need aquaboard.

 

[Flintstone]

Tilefix direct for all the boards and fixings, price it up. Better than a tanking kit.