Posted: Wed Jan 15, 2014 3:37 pm
I have a slate slab floor in my kitchen, laid by someone else, on a sand base and grouted with a sand and cement mix. After three years the floor has settled and there are quite a few cracks and breakages in the cement mix grout. I plan to lift all the sand/cement mix up and to re grout but I want something that is a) pretty permanent and b) flexible enough to cope with any further movement, is that possible?