Industry News
Common Pool Tile Discoloration and Ways of Dealing with Them
Over the years, one of the main problems pool owners deal with is tile discoloration. More often than not, discoloration occurs on glass tiles, especially those which are transparent or translucent. And the back coated glass is not an exception. There are many causes of discoloration. Determining the exact cause of discoloration will help you find the most suitable solution to the problem. Some of the leading causes of pool tile discoloration include microbial growth, back coating erosion, effects of glue or mesh on tiles, and thin-set shading/marks/voids. Knowing how to deal with each of these problems can be mind-consuming.

Dealing with causes of pool tile discoloration
Thin-set shading
Even though you may notice pool tile discoloration on the exterior surface, the problem’s primary cause usually results from underneath the tile. In particular, the problem’s source often originates from the adhesive under the tile or the thin-set. The tiles may appear extraordinarily beautiful, but the aesthetics get ruined once the tile starts developing stain patches. You can choose to either live with this problem or remove the entire tile. Removing tiles can be costly; so, it would be best to look for other ways to deal with this problem. Alternatively, ensure that you install a high-quality, durable thin-set that offers excellent functionality.
Now that you know that the problem often stems from the thin-set, you have to use a color-consistent thin-set. What does this mean? Make sure you purchase the thin-set from the same manufacturer to avoid any disparities. Also, ensure that the thin-set came from the same material/plant and got manufactured on the same day. It also has to have a guarantee that it is color consistent.
Additionally, the thin-set should be uniquely designed to complement glass tiles. During the installation process, you should also leave the thin-set to cure completely. Otherwise, you’d experience issues with your glass tiles.
Degradation of back-coated glass
Typically, a back coated glass is a transparent glass that contains a coating underneath it. Such tiles offer excellent aesthetics due to the back coating. But you’ll barely notice that the coating is on the underside. The back coating also gives the tile an intensified depth level.
Over time, back coated glass tends to wear out after some time. Also, back coatings are vulnerable to degradation when exposed to harsh external conditions like ultraviolet rays and extreme alkalinity. If a back coating is not installed correctly, it becomes more prone to damage.
Therefore, it would be best to ensure that the back coating has a quality and durable material. I mean, you don’t want to spend all your money on tile repairs and replacement. The back coating also has to be resistant to the damaging effects of UV rays and harsh chemicals.
One of the main advantages of back coatings is that they offer high longevity. Even so, you have to purchase this material from a reliable manufacturer. Failure to do so would be setting yourself up for disaster. However, note that different types of back coatings offer different types of functionality. Be careful not to overlook functionality because of aesthetics. Ensure that you understand all the advantages and disadvantages of each back coating. From there, you can select the most suitable option that caters to all your needs.
Microbial growth
Pool tile discoloration can also result from microbial growth. Often, when moisture accumulates in your tiles, it leads to microbial growth, which in turn leads to tile discoloration. Moisture could come from anywhere; spills, humid conditions or frequent contact with water. Therefore, if you have a pool, you cannot afford to install the regular kitchen tiles.
You have to purchase pool tiles that are specifically designed to withstand moisture for long periods. Pool tiles are highly resistant to harsh climatic conditions, rusting, abrasive pool chemicals, acids and they should be waterproof. And when you notice any microbial growth on the tiles, ensure you deal with the issue immediately. Otherwise, discoloration would spread to all the tiles.
Effects of mesh or glue on the back of the tile
When installing the tiles, you have to select the most suitable glue. The mesh or glue you will use depends on the type of tiles. For example, if you have ceramic tiles, you can either use a ready-mixed tile adhesive. If you have porcelain tiles, a powder adhesive would be a good bonding option. Note that if you have large tiles that exceed 20 by 20-centimetre tiles, it is best to apply glue on the wall and underneath the tile.
At present, both the pool and tile industry have made great efforts to deal with pool tile discoloration issues. Their efforts have not been futile; but better solutions are yet to be found. Finding the best solutions to dealing with pool tile discoloration often begins with understanding the cause of the problem. Once you do this, you extend the lifespan of your pool tiles and the entire pool.
Industry News
PHTA Opens Public Review of Revised PHTA-6 Spa Standard
The revised PHTA-6 standard addresses requirements for residential portable spas and exercise spas, with public comments being accepted during the review period.
(Alexandria, Va.) — The Pool & Hot Tub Alliance (PHTA), the trade association representing the swimming pool, hot tub, and spa industry, is inviting public review and comment on the proposed revision of the PHTA-6 Standard for Residential Portable Spas and Exercise Spas.
As an American National Standards Institute (ANSI)-accredited standards developer, PHTA follows a consensus-based standards development process that includes public review and comment opportunities for proposed standards revisions.
The draft revision of the PHTA-6 standard focuses on site-specific installation and consumer use of residential portable spas and exercise spas after delivery to the end user. Proposed updates are intended to improve enforceability, support regulatory alignment, address certification gaps, and enhance safety continuity throughout the industry.
The revised draft also includes updated language and new content designed to reflect current industry practices, technologies, and requirements.
The public review period for the draft PHTA-6 standard opens May 22, 2026, and closes July 6, 2026. During this time, industry professionals, regulatory agencies, and other interested parties are encouraged to review the draft and submit comments for consideration.
The public review announcement was published in ANSI Standards Action on May 22, 2026.
The draft standard and instructions for submitting comments are available on the PHTA-6 webpage at phta.org.
For additional information, please contact PHTA’s Standards Department at [email protected] or call (703) 838-0083.
About the Pool & Hot Tub Alliance:
The Pool & Hot Tub Alliance (PHTA), a non-profit organization with 4,000+ members from around the world, was established in 1956 to support, promote, and protect the common interests of the $62B pool, hot tub, and spa industry. PHTA provides education, advocacy, standards development, research, and market growth initiatives to increase our members’ professionalism, knowledge, and profitability. Additionally, PHTA promotes the use of pools by expanding swimming, water safety, and related research and outreach activities aimed at introducing more people to swimming, making swimming environments safer, and keeping pools open to serve communities. For more information, visit www.phta.org.
Industry News
Watson’s Expands into Carolinas with Viridien Acquisition
Watson’s Accelerates Strategic Growth with Acquisition of Viridien Patio + Fireplace, Strengthening Southern U.S. Presence
Cincinnati, OH (May 18th, 2026) – Watson’s, one of the nation’s largest retailers of home recreational products and furnishings, today announced the acquisition of Charlotte, NC based Viridien Patio + Fireplace, the Carolinas premier destination for high-end outdoor furniture, outdoor kitchens, fireplace and hearth products.
The acquisition of Viridien further strengthens Watson’s Southern U.S. presence, building on its 2024 acquisition of Fort Myers, Florida-based Recreational Warehouse, while also expanding its leadership in the outdoor furnishings category overall. The addition of four Carolinas locations—Charlotte, Lake Norman, Raleigh, and Greenville—brings Watson’s total store count to 39. Following the acquisition, Watson’s will operate 23 corporate locations and 16 franchise and affiliate locations.
“Expanding into the Carolinas market has long been a strategic objective for us,” said Erik Mueller, CEO of Watson’s. “The market’s strength and sustained economic growth make it a natural fit for our continued expansion. Combined with Viridien’s strong team, shared values, proven business model, and established presence, this acquisition represents an excellent strategic alignment. We are excited to welcome the entire Viridien team into the Watson’s family and to continue delivering high-quality products and experiences that bring enjoyment and relaxation to families across the region. Looking ahead, we see meaningful
opportunities to expand our product offerings and further grow our presence throughout the state as we invest in and grow alongside the community.”
“Watson’s is a family business with a strong culture, an outstanding reputation, and values that closely align with our own. From the beginning, it was important to me to find a partner that truly understood what Viridien has been built on over the past 45 years — taking care of our employees, customers, and vendor partners while always operating with integrity and a long-term perspective. I genuinely don’t believe we could have found a better home for our business. This partnership creates exciting opportunities for growth while allowing us to preserve the culture, service, and relationships that have defined Viridien for decades,” said Grant W. Henegan, Owner and President of Viridien Patio + Fireplace.
Following the acquisition, Viridien will operate as a wholly owned subsidiary of Watson’s and will be branded as Viridien by Watson’s. Customers should continue to expect a seamless and premium experience, with the same high standards of product selection and exceptional customer service delivered by both Watson’s and Viridien.
Building on this most recent expansion, Watson’s continues to evaluate and pursue multiple avenues for growth across the U.S. “We see significant opportunity to continue scaling Watson’s through new store development and strategic acquisitions in both our existing and new markets,” said Mueller.
Founded in 1968, Watson’s is one of the nation’s largest retailers of home recreation products, offering outdoor furniture, spas, pools, saunas, billiards, indoor furnishings, and more.
Assisting in the acquisition were Cincinnati-based partners Katz Teller, Clark Schaefer Hackett and Charlotte-based partner Stump & Company.
Terms of the deal were not disclosed.
About Watson’s
Since 1968, Watson’s has grown from a pool store in Cincinnati to one of the nation’s largest retailers of home recreation products and home furnishings. Their stores feature outdoor furnishings, indoor furnishings, game tables, pools, spas, and more, all under one roof. Watson’s mission is to bring families together for fun, relaxation, and a break from the stress of daily life. Their vision is to bring creativity to the home furnishings and leisure industries, by providing leadership with cutting-edge products, innovation, and world-class customer service. For more information visit www.watsons.com.
About Viridien Patio + Fireplace
Viridien Patio + Fireplace is a Carolinas based specialty retailer founded in 1981 that has evolved from a single fireplace store into a regional leader in premium outdoor furniture, outdoor kitchens, and fireplace products. Formerly known as The Fire House Casual Living Store, the company rebranded as Viridien in 2022 to reflect its focus on elevated outdoor living, design expertise, and customer-centric service. www.viridien.com
Industry News
POOLCORP Welcomes John Watwood as President and Chief Executive Officer
Seasoned distribution leader to drive POOLCORP’s next chapter of growth, deepening commitment to customers and supply partners
COVINGTON, LA., May 14, 2026 — POOLCORP, the world’s largest wholesale distributor of swimming pool and outdoor living products, recently announced the appointment of John Watwood as President and Chief Executive Officer.
Watwood joined the company in January 2026 as Executive Vice President and has quickly made an impact after spending much of his time in POOLCORP sales centers, meeting with customers, engaging with suppliers, and aligning closely with teams across the business. With extensive leadership experience in industrial and specialty distribution, Watwood brings a deep understanding of how to build high-performing teams, strengthen customer connections, and create long-term value in the industry.
Prior to joining POOLCORP, Watwood served as Senior Vice President of Sales and Operations at Motion Industries, a leading distributor of industrial parts and value-added solutions and a subsidiary of Genuine Parts Company. During his career, he has led large-scale sales and operations organizations focused on customer growth, supply chain excellence, and market expansion.

“John has gained the trust of our employees, customers, and suppliers in a very short period of time,” said Kenny St. Romain, Senior Vice President at POOLCORP. “He understands distribution at its core, but more importantly, he understands the value of relationships and the local support that our customers need. Our field teams have seen firsthand his commitment to listening, supporting our customers, and helping us continue to evolve our already successful service model. There’s real excitement across the organization about where we’re headed under John’s leadership.”
Watwood’s appointment marks the next chapter for POOLCORP as the company continues to invest in customer-focused solutions, sales and service excellence, operational capabilities, and technology-enabled experiences designed to help industry professionals grow and operate more efficiently.

About Pool Corporation
POOLCORP is the world’s largest wholesale distributor of swimming pool and related outdoor living products. The Company operates approximately 455 sales centers in North America, Europe, and Australia, through which it distributes more than 200,000 products to roughly 125,000 wholesale customers, including pool builders, retail stores, and service professionals. For more information, please visit www.poolcorp.com.
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