People,
What do you know about expansion and compression joints? I’m pouring a slab and plan on staining it, cutting joints at around 4 feet on center throughout to have a sort of tile effect. with a 4″ slab do I really need to go 1/2″ down to be effective?
second, what insulation for below a radiant floor? I’ve heard somewhere about interlocking rigid insulation, the radiant plans call for r-10.