I'm doing a shower area next week and it is being tanked or I won't be doing it !! I don't believe in over kill but it's only a small area and tanking it will only cost about 50 quid job done
I've never tanked a shower and never had a comeback ,but have re done some which have failed.
On another note,I went to one last year where the tanking system had failed,or was not stuck right(floor)
If they fail it's usually not been done right in the 1st place,fixer error
For what tanking kits cost use one.
Most cement based powdered adhesives manufactures recommend using a tanking kit in showers.
and the ready mixed stuff in tubs I never use in shower areas and never will, so can't comment
Re tiled a shower cubicle last week due to a leak. Granted this is quite extreme due to poor tiling and no seal around the shower control behind the face plate but this could of been prevented by tanking and sealing in the 1st place. I show similar pictures to customers if they're unsure tanking is needed.
if and when water does penetrate through the grouting or wherever its getting through as I can see in the photos if the walls are tanked where does the water go then just quering for the future as a plasterer I have done some tiling in the past eg kitchens and floors etc but never wet rooms etc as I may get back into it as the weather is preventing any work going on outside so just looking for any info I can get thanks