Waterproof shower wall before tiling

12 Mar 2013
Reaction score
United Kingdom
Hi Guys,

Can you please give me some advice about shower waterproofing.

I will be installing a shower enclosure in my upstairs bathroom , one wall is a solid wall (concrete bricks) another wall is currently a plywood box with all the pipework inside.

- How do I waterproof the solid wall before tiling? I will remove the old plaster off that wall first, then do I just apply a few coats of waterproof material and tile, or do I need some covering boards?

- the plywood box, I planning to rebuild it using hardybacker, do I need to waterproof hardybacker in some way before tiling?

Thanks for your help!
Sponsored Links
I would say its certainly worth tanking under tiling as the grout can become porus over time.
I have a bit of this left over from another job, so im thinking of using it.


Not sure if its suitable though, but it does say you can put it on with a brush, not sure how it would work on plaster board. I might have a test with an old bit of plasdterboard first.
It is always a good idea to tank the walls within a shower enclosure. This video shows you how to use the tanking system.
I would install fir strips to the wall then install aqua board. You could also install a stud wall, insulate and apply aqua boards or backer boards. Tank as normal and tile.

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.

Are you a trade or supplier? You can create your listing free at DIYnot Local

Sponsored Links