The size of your hot tub will determine how you prepare for installation. All spas require a sturdy foundation. A large, heavy spa requires a concrete slab base that is at least 4â€ thick. For most Caldera spas, including the 8-person CantabriaÂ®, a concrete slab is a must.
The concrete slab for the hot tub would need to be a minimum of 4 inches or 10cm's thick, ideally 6â€ or 15cm. It's a good idea to reinforce the concrete with some rebar and layer the foundation with some form of hardcore rubble for additional support.
We pour hot tub pads in all different shapes and sizes in the Denver Metro!. A hot tub holds 400+ gallons of water so you are looking at a concrete pad needing
Concrete Pad/Slab; Crushed Gravel Bed; Pavers or Blocks; Prefabricated Hot. Check out the hot tub showroom to see the various shapes and sizes offered to .
If you choose to place your hot tub on a concrete slab, you''ll have to build something more substantial than a normal 4-inch concrete pad, due to the weight