Can you help identify stone tiles?
We bought a new build house in December 2015.
The kitchen walls are tiled in what the building specification describes as "slate river 10x10". To my untutored eye they appear to be porous and so absolutely not suitable for use around the kitchen hob when fat, oil, sauces are frequently splattered.
I am using normal kitchen cleaning sprays but am afraid that the tiles will at some time become discoloured.
Opinions/views/advice gratefully received.
Thank you.