Water does not harm your slab, in fact water is often used to slow the curing process thereby making it stronger. I have poured a ton of concrete and done exposed by way of retardant then washing. I would encourage you guys to try doing your exposed work yourselves, it really is quite simple. For stamped I would get a pro and make sure you check their work, I have seen some really good stamped and some really rough work.Originally posted by theken
you don't think water weakens concrete? especially when the concrete is not dry yet? I have a giant concrete book if your interested in learning some things.