
Hi,Apologies for a banal question, google doesn't immediately reveal any obvious advice here.Essentially, I'm replacing an ancient patio and path with ~50 600 x 600 black granite slabs. As you can imagine, black granite isn't the cheapest, but I've found a source that's about two thirds of the usual price.However, the difference is rather than the usual 25mm thickness, these are only 20mm thick. My question here is will there be a big difference in the fragility of these slabs, obviously thicker is generally better, but are these significantly more likely to crack, etc. than the 25mm ones, or should the difference be fairly negligible as long as I'm careful to lay with even support?(I should mention in terms of load these would be expected to bear that these should only even see foot traffic or at most a plant pot sitting on one or two). via /r/DIY https://ift.tt/2HhUJlR