File under "Just wondering if we are crazy": my wife and I have found (at a very good price) a bunch of used slate slabs that are old chalkboards from a demolished High School. They are approximately 3/8" thick, and most are larger than 4 ft. x 4 ft. Some are as much as 6 ft long.
We are thinking about using them for our new kitchen floor, by using mastic atop 1/2" thick plywood subfloor. We're not sure how we'll cut them down for the endges, etc.
Insane or clever? We'd love any feedback you can offer!