Is it OK to sand slate?

you took a wire brush to slate because you're too stupid to buy a proper cleaning product?

>>1048606

masonry is polished after manufacturing prior to packaging.

you just removed the polished and opened the surface on a porous material. now your disgustion pig hoof sweat are going to stain them. good job.

OP here. I bought a commercial stripper. There's years of some 'wax' thrown on for a sheen and was never removed. Lots of embedded dirt and grime that. The commercial stuff just couldn't touch.

>a commercial stripper.
oh well alright then. there is only one kind of commercial stripper after all

OP again, I used the brush on a single tile where fridge lives. Just to experiment.

>>1048621
I mean, it's supposed to be ano acrylic stripper. The basic grout and tile cleaner didn't do anything at all.

Sure I can buy another brand. But they're pretty expensive to find what works when I can ask around. The guys at the hardware store "haven't worked with slate."

So, slate is generally very non porous, which is why it makes such a good roof. If the finish was already smooth (rather than split) than sanding it will do no harm. If it is split, its going to take a lot of sanding to make it flat:) sanding it wet is most ideal, as it will give the best finish and the dust contains enough silica that you dont want to breathe it, otherwise wear a good dust mask. You can reseal it with wax, but unless it is a very soft slate you dont need to.

Sorry, misread op:) wirebrushing is fine as well, but you might want to reseal, as the scratches will be bigger. The lighter color is just slightly bruised stone.Possibly try a rotary abrasive pad instead, will clean off the crap without bruising the surface as much...

Yah it's safe