We recently had a fab new wet room done but we're rapidly regretting having chosen slate tiles for the floor because they have got limescale D very quickly- White marks showing within about 6 weeks of installation and instead of lovely dark grey they are now all chalky.
The texture of the natural slate is lovely underfoot but the problem is that (according to the company that sold them to us -" Mrs Stone" - you can't use anti limescale cleaners like Viakal on them as it will damage them.) We've been using a specialist LTP slate cleaning product but it doesn't shift it at all.
I called Mrs Stone and was advised to use the LTP anti limescale spot cleaner, which is not actually recommended for slate, very sparingly, but that the only real solution is to squeegee away all water after every shower- not going to happen on busy mornings in this house.
We're now looking into getting a water softening system for the whole house. It's all a bit frustrating, so I guess the purpose of this post is firstly to ask if anyone else has found a better solution to this problem and secondly to advise anyone doing a bathroom in a hard water area (we are in N London so not excessively hard, but hard enough) to steer clear of slate and go for "slate-look" that can be cleaned with anti limescale products, or to choose light coloured floor tiles.
The walls, which have the same slate, seem OK thanks goodness.