The finest acrylic sheets are vacuum molded into a particular shape, then reinforced with a skin coat of resin and fiberglass. After curing for four hours to ensure proper bonding, the shell receives a dense filler coat of resin, fiberglass, and fire-retardant aluminum hydrate. Stiffener reinforcement supports and 1-1/4" angled iron are added to principal stress areas to ensure maximum strength.

A final filler coat is applied to seal, bond, and reinforce the overall structure. The end result of our Fibersteel Construction Process is the spa industry's strongest and sturdiest shell.