Good evening all.
My wife and I have been thinking about getting a spa for a while, and we have settled on the Hotspring Envoy. My question is, I curretly have a 12x12 cement slab as a back patio that is 3" thick. I do not know if it is reinforced with rebar or not, but it is in good condition with no visible cracks (house is only 4 years old). The Hotspring manual requires a 4" pad for two of their heavier spas, but only recommends it for the Envoy and the rest of their spas. Will a 3" thick cement pad be sufficient?
Thanks
Paul