Unraveling the Causes of Acrylic Spa Fading

In the sun-drenched landscapes like Arizona, acrylic spas are treasured for their ability to offer relaxation and leisure. However, the longevity and aesthetic appeal of these spas can be compromised by fading, a common issue faced by spa owners over time. A 15-year-old in-ground acrylic spa exhibiting extreme color fading presents a case study in the environmental and chemical challenges to spa maintenance.

Chemical Sanitizers vs. Sunlight: A Dual Threat

Acrylic, although robust and resistant to chemical exposure, is not impervious to the effects of certain sanitizing chemicals and prolonged sunlight exposure. In particular, “tri-chlor” tablets, known for their potent oxidizing properties, have been implicated in cases of acrylic spa surface bleaching. When combined with the intense UV radiation typical of sunny climates, these factors can synergistically exacerbate fading and surface damage, including the formation of cracks and crazing.

The Role of Spa Covers in Preventing Damage

Manufacturers consistently advocate for the use of spa covers when the spa is not in active use. This practice significantly mitigates the risk of UV-induced damage by limiting the spa surface’s exposure to direct sunlight. The absence of a cover, as suggested by the presence of cracks around the spa’s top edge, underscores the critical need for protective measures against the sun’s heat and chemical misuse.

Recovering the Original Aesthetics: Is It Possible?

For spas showing early signs of fading, restoration can often be achieved through careful sanding, buffing, and polishing. This process removes the oxidized layer, revealing the undamaged acrylic beneath. However, the success of such interventions depends on the depth of the damage and the diligence in eliminating the sources of chemical and UV exposure.

Advanced Solutions for Severely Faded Spas

In cases where fading is extensive, as shown in the provided example, more comprehensive solutions are required. Multi-Tech Products offers the Fiberglass Reinforced Lining (FRL) system,

designed to refinish and create a durable, attractive surface that can extend the life of a spa for an additional 15 to 20 years. This system is particularly suited for spas that, despite their aesthetic wear, remain structurally sound or are situated in locations where removal and replacement would be prohibitively expensive.

The FRL System: A Permanent Solution

The FRL system, applied directly over the existing acrylic surface, provides a robust solution that outperforms traditional bathtub, marine, or pool refinish coatings, which may offer only a temporary reprieve. Suitable for both DIY enthusiasts with handyman skills and professional surface repair technicians, the FRL system can also accommodate structural reinforcements or modifications during the application process. An explanation of the process can be found here (link to: FRL PROCEDURE Final.pdf in procedures PDF folder)

Conclusion: Navigating Spa Restoration with Expertise

The phenomenon of spa fading underscores the importance of adherence to manufacturer recommendations for chemical use and protective coverings. For spa dealers and owners confronting fading and surface damage, understanding the underlying causes and available solutions is paramount. With the right approach, including potentially the application of the FRL system, it is indeed possible to salvage and rejuvenate an aged acrylic spa, ensuring its continued enjoyment for years to come.