Re: shower, I'd tear everything down, put up new framing or dot and dab adhesive to hold cement board in place, sealed with the correct goop, then tile onto that, with an enamelled steel tray at the base on a decent framing base. Eliminate all movement, and separate anything that can rot from the water with an impermeable layer.
Looks great now.
Re: shower, I'd tear everything down, put up new framing or dot and dab adhesive to hold cement board in place, sealed with the correct goop, then tile onto that, with an enamelled steel tray at the base on a decent framing base. Eliminate all movement, and separate anything that can rot from the water with an impermeable layer.