Hot Tub Buying - Selecting the Shell

Understanding Hot Tub Shell Materials

Acrylic Shells: The Gold Standard

Acrylic is the most popular material used for hot tub shells, prized for its durability and aesthetic appeal. However, not all acrylics are created equal. High-quality acrylic, such as Lucite-Xtra™, offers superior resistance to staining from lotions and body oils, maintains its luster despite chemical and UV exposure, and is robust against chipping, cracking, or denting. Lucite-Xtra™ is also non-porous, making it easy to clean and maintain without the need for additional polishing or waxing.

The Importance of Manufacturing Processes

The construction of a hot tub shell can greatly influence its quality. A top-tier construction process involves multiple layers to enhance strength and insulation. For instance, the patented Dura-Bond™ technology incorporates four layers:

1. A base layer of Lucite-Xtra™ acrylic.
2. A secondary layer of ABS for structural integrity.
3. A reinforcement layer of high-density material combined with fibrous chop to significantly enhance strength.
4. A final thick layer of polyurethane foam for optimal insulation and support.

This multi-layered approach not only ensures a robust shell but also contributes to better heat retention and overall energy efficiency.

Assessing Shell Quality: Practical Tips

Visual Inspection

Look for any signs of poor craftsmanship such as uneven surfaces, discoloration, or visible stretch marks along bends and curves. These can indicate the use of lower-grade acrylic or substandard manufacturing processes.

The Lipstick Test

A simple yet effective method to check the porosity of the shell's surface. Apply a small amount of lipstick to the shell; if it wipes off easily without staining, the material is likely high-grade, non-porous acrylic. This test helps in identifying surfaces like Enderol, which are more porous and prone to bacteria buildup and staining.

Choosing the Right Manufacturer

When selecting a hot tub, opt for reputable manufacturers known for their commitment to quality and innovation. Established American brands often adhere to stringent manufacturing standards and use superior materials. Avoid cheaper imports that may compromise on these aspects to cut costs.

Why American Made Matters

American-made hot tubs are often at the forefront of technological advancements and quality assurance. Manufacturers in the U.S. are subject to rigorous testing and compliance standards, ensuring that they deliver a product that is safe, reliable, and long-lasting.

Conclusion

Investing in a high-quality hot tub shell is crucial for both the longevity of the product and the enjoyment of its users. By understanding the materials and manufacturing processes involved, and conducting thorough assessments, you can ensure that you choose a hot tub that meets your needs and expectations. Always prioritize quality and craftsmanship over cost, and consider reputable sources when making your purchase.

For further reading on hot tub standards and materials, visit the Association of Pool & Spa Professionals and explore resources available at Consumer Affairs.