32’x42′ concrete slab, 4″-5″ thick, on foam and stable sand base: Do I need saw cuts?
Just poured the garage and had it sealed with a cure and seal compound. Slab ended up 5″ in places (nominal 4″). I sits on 1 inch of foam and Ampex radiant panels (3 inch foam equivalent total). It’s a floating slab, with 2 inches of foam separating it from the frost walls. The whole thing is on 4′ of compacted sand, that sat for a year before the pour. Slab is 32 Mpa concrete with microfiber, no steel reinforcement.
My question is, do I really need the saw cuts? I would be willing to deal with the odd crack. I figure it would be a lot easier to keep the floor clean without the saw cuts.