im starting an 80.00 sq mt slate floor tomorrow.
=I think the best stuff around is from brazil if you want a slate that is calibrated , fairly smooth on top and easy to look after.
Done all the others ,s.african/indian/ chinese/welsh/delabol:
thousands of metres for Fired earth years ago but this brazilian stuff is great.
You can even get a honed version calibrated which is stunning for bathroom walls, splashbacks /feature walls.
And they dont even cost much!!
Mandarin sell it. european heritage sell it cheaper .
Andulasian slate do it as well.
in fact loads of people do it and I have tried at least five different suppliers and quality seems to be very similar.
Maybe the same importer supplies everyone.
Its that good that i would fix with an average 3mm joint and not get lips worth worrying about.
jOhnny