 
An 8' x
8' spa will weight about 1,000 lbs.
dry. Add 500 gallons of water and
four adults, and you can imagine the
stresses that can be put on the spa.
Cal Spa shells are the strongest and
sturdiest in the industry—strong
enough to be backed with a 10-year
structural warranty.
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1.
Structural Strength: The World's
Strongest Shells |
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From value-minded to
high-end, every Cal Spas hot
tub is built with our
exclusive Fibersteel
Construction Process®,
creating the world's
strongest spa shells. The
finest acrylic sheets are
vacuum molded into a
particular shape, then
reinforced with a skin of
coat of resin and
fiberglass. After curing for
four hours to ensure proper
bonding, the shell receive 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.
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2.
Full-Foam Insulation: Maximum
Thermal Retention & Solid
Support |
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Cal Spas offers our optional
Exclusive High-Density
Thermo-Fill™ Full-Foam
Insulation for maximum heat
retention, structural
support, and lower operating
costs.
EXCLUSIVE
Fibersteel Construction™
produces the world's
strongest shells
 High-Density
Thermo-Fill™ Full-Foam
Insulation ensures:
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Fully supported and
solidified plumbing to
virtually eliminate
leaks
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Maximum heat retention
and noise reduction
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Energy efficiency and
cost savings
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No dead air space for
heat escape
Handcrafted spa cabinets are
made of maintenance-free Cal
Select™, premium Clear
Redwood, or value-minded Cal
Wood™. Panels are recessed
into the top and bottom
rails for superior
structural integrity.
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