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Home / Why Strong Spas? / Our Production Facility
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OUR PRODUCTION FACILITY

OUR SPAS.
YOUR MEMORIES.

For decades, Strong Spas has been built on the belief that customer experience and satisfaction are of the utmost importance. Our success stems from our quality control and nine separate phases at our state-of-the-art production facilities and headquarters in beautiful Northumberland, Pennsylvania.

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TRIPLE-BOND ACRYLIC SHELL

THE STRENGTH
TO LAST A LIFETIME

The quality of your hot tub’s shell has a lot to do with how long it will last. The shell is the shaped form inside the hot tub that you sit in every time you use your hot tub, so it has to be durable and easy to maintain. Strong’s acrylic hot tub shell is a triple-bond design and provides effortless, long-lasting luxury. The acrylic hot tubs are manufactured with a three-layer construction process that produces the industry’s strongest shell.

PREMIUM QUALITY
CRAFTED SHELLS

Hot tub shell production begins with a genuine Lucite™ Xtra acrylic sheet, a non-porous material that won’t harbor bacteria. This layer is laminated with a vinylester bonding layer that acts as a vapor barrier. The third hot tub layer is our revolutionary StrongBond® polyurethane component, which has superior strength compared to traditional fiberglass materials.

Our Production Facility-Triple Bond Shell Diagram
Strong Spas Faded Water Slider

The Rotational Molding Process

Rotational molding, also known as rotomolding, is a hot tub molding process used to create our Durasport Hot Tubs and Spas. A heated hollow mold is filled with a powdered high impact polyethylene polymer. The mold is mounted on a single arm machine (Strong Spas houses two of the largest and most technologically advanced Rotomold Machines in the industry). These machines rotate the mold biaxially while heating it externally. The high impact polymer softens, therefore, uniformly coating the inside of the mold. Once cooled, the two part mold is opened exposing a single piece spa.

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Rotational Molding – Image 1

True Portability

Strong Spas are truly portable, require no maintenance, and are designed to be able to withstand even the harshest climates.

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Rotational Molding – Image 2

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Rotational Molding – Image 3

Backed By a Lifetime Warranty

Strong Spas' rotational mold cabinets benefit from consistent wall thickness and density creating spas so structurally strong we back them with a Lifetime Warranty. Your rotational cabinet will look as beautiful in years to come as it did on the first day.

Strong Spas Rotational Molding Zoomed

Rotational Molding – Image 4

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A HISTORY OF
PREMIUM QUALITY

At Strong Spas, each hot tub is custom built – our products are not mass produced, go through our stringent quality control checks before being shipped to 40+ countries worldwide. This allows us to maintain our commitment to quality. No detail is overlooked. Our pledge to our customers: nothing but the best.

Ready to Climb Into a Strong Spa?

make a lifetime of memorable moments with Strong Spas.