Contractors and Builders
Rise of the Movable Pool Floor: Tieleman Pool Technology
Founded in 1970, Tieleman Pool Technology, began as a family-run business specializing in hydrotherapy. In the early days, the company focused on addressing the needs of patients requiring low-impact movement to enhance their rehabilitation. Marijn Tieleman, who eventually took over the company with his cousin about a decade ago, reflects on the company’s origins: “There was a lot of demand for movable floors and different heights. In the ’70s, we were experimenting a lot with trial and error. The focus was on creating solutions for hydrotherapy, but as we advanced, the technology began to catch on for other applications.”
Tieleman recalls, “We transitioned from a purely medical focus to exploring private residential markets. Our hydrotherapy systems had proven their reliability and efficiency in hospitals, so we wondered if we could adapt this technology for home use.” This shift was not without challenges, but it opened up new possibilities for residential applications, leading to the development of movable pool floors that could transform private backyards.

The Technology Behind Movable Pool Floors
Movable pool floor technology, once a niche innovation, is now making waves in the residential market. Tieleman explains, “The technology involves a frame made of high-grade 316 stainless steel, equipped with a hydraulic system. This system, which uses water hydraulics rather than oil, allows the floor to adjust seamlessly to various depths.” The floor operates as a floating platform, which can be raised or lowered via a touch screen control panel. This flexibility enables homeowners to customize their pool’s depth, creating multi-use spaces that can transition from a swimming pool to a functional area for other activities.

Market Appeal
The appeal of a movable pool floor lies in its versatility. Tieleman describes how this technology can transform a backyard: “If you have limited space, a movable floor allows you to use your pool area for different purposes. For example, you can have a pool that doubles as an entertainment space. When the floor is raised, it becomes a level surface suitable for placing furniture or hosting events.” This adaptability is particularly valuable for those with smaller yards or who wish to maximize the functionality of their outdoor spaces.
The speed at which the floor adjusts is one of its most impressive features. “Typically, it takes about 4 to 5 minutes to raise or lower the pool floor,” Tieleman says. This rapid adjustment allows homeowners to transform the pool area quickly, making it ideal for spontaneous gatherings or activities. For smaller changes in depth, the adjustment can be even faster, offering a high degree of flexibility.
When it comes to depth, the possibilities are virtually limitless. Tieleman notes, “The depths we can build these pools are endless, really. We’ve actually built a couple of diving pits that go all the way down to 50, 60 feet for commercial diver training. We can’t use the same cylinder we normally do, of course; it has a little different pulley system on it. But basically, there’s no limitations.”

When considering a movable pool floor, pricing inevitably becomes a factor that would preclude this as a product you’re bound to see everywhere. Tieleman explains, “Pricing really depends on how many options you wish to do. But if you have some stairs or some odd shapes, or unique features it can cost more. I would guess in between 150K to endless, really. But for entry-level, around $150,000. That’s around where you start off with a movable floor,” said Tieleman.
One of the main advantages of Tieleman’s system is its durability and ease of maintenance. “Our systems are built to withstand heavy use,” Tieleman notes. “We use chlorine and salt-resistant materials, and maintenance is minimal. We typically perform annual checks and repairs if needed, ensuring the system remains in top condition.” This emphasis on longevity and reliability adds to the appeal of movable pool floors, making them a practical investment for homeowners.
The design options for these systems are extensive. Tieleman elaborates, “Customization is a significant part of our offering. We’ve created everything from movable jacuzzis and swim-out benches to pool covers with integrated lighting. The possibilities are endless, limited only by the homeowner’s imagination.”
A Recent Case Study
One standout example of Tieleman Pool Technology’s innovation is an ongoing project in the Bahamas. Tieleman shares, “In this project, we designed a pool with two movable floors, each capable of reaching different depths. It was an ambitious undertaking that required meticulous planning and engineering.” The dual-floor system allowed the homeowners to adjust the pool’s depth for various activities, from swimming to hosting large events.

Tieleman elaborates, “The complexity of the project came from ensuring the two floors operated seamlessly together. Each floor needed to function independently while maintaining precise alignment. Our team worked closely with the clients to tailor the system to their specific needs and ensure it met all safety and operational standards.” The project involved integrating advanced hydraulic systems and custom controls, reflecting the high level of sophistication that Tieleman Pool Technology brings to its designs.

This unique movable pool is a prime example demonstrating the potential of movable pool floors in creating unique and versatile outdoor environments. “The feedback from the clients has been overwhelmingly positive,” Tieleman says. “They were thrilled with the flexibility the system offered. It allowed them to have a stunning pool that could adapt to their needs, whether they were hosting a party or enjoying a quiet swim.”
European Design Trend Becoming More Popular With U.S. Builders
As the technology gains traction, its adoption in the U.S. market is growing. Tieleman notes, “In Europe, the response has been phenomenal. In the U.S., it’s starting to catch on as builders and homeowners become more familiar with the technology. The key challenge here is educating the market about how it works and its benefits.”
The trend towards movable pool floors reflects a broader shift in outdoor living, where functionality and aesthetics converge. Tieleman highlights, “People are looking for ways to make their outdoor spaces more versatile. A movable pool floor offers a unique solution, allowing for a customizable environment that can adapt to various needs.”
As movable pool floors become more popular, the notion of keeping up with the Joneses is evolving. It’s no longer just about having a pool in your backyard; it’s about having one that remains hidden until you want to reveal it. This innovation represents a new frontier in outdoor living, where the ordinary becomes extraordinary through advanced technology and thoughtful design.
In an era where backyard spaces are increasingly valued for their multifunctionality, a pool that can seamlessly transition between different uses may well become the ultimate status symbol. For homeowners looking to elevate their outdoor living experience, embracing movable pool floor technology might just be the next big leap.
Ready to Take a Deeper Dive?
Listen to our entire conversation with Marijn Tieleman on the Pool Magazine Podcast.
Contractors and Builders
“But It Passed Inspection”: Why That’s No Defense for Code Non-Compliance
Every pool builder or contractor has heard it—or said it—at some point:
“But it passed inspection.”
Those words often come up in courtrooms, after a project has gone sideways and litigation is underway. It’s a phrase meant to shift blame, to suggest that because an inspector signed off, everything must have been done correctly. Unfortunately, that’s not how the law works.
Passing inspection does not equal being code-compliant. And when problems arise, it’s the builder or designer, not the inspector, who carries the legal and financial responsibility for non-compliance. Understanding how building standards are adopted, enforced, and referenced is critical for every professional in the pool and spa industry.
Understanding How Standards Become Law
Most contractors know that building codes exist, but fewer understand how those codes are structured. Many of the technical details that govern your work are not printed in the state building code itself. Instead, they’re part of what’s known as “adopted by reference”—external standards that are legally binding even though they aren’t printed word for word in the codebook.
For example, the International Code Council’s International Swimming Pool and Spa Code (ICC-ISPSC) is one of the most widely adopted pool construction standards in the country. Many states have formally adopted the ISPSC by reference through their residential or building code appendices. That means that even though you won’t find every detail of the ISPSC spelled out in the printed state code, it carries the full weight of law.
How “Adopted by Reference” Works
When you look at your state’s residential building code, you’ll often find an appendix titled “Referenced Standards.” This section lists all of the national and international standards the state has chosen to adopt for that code cycle.
Most of the larger, more populous states are on a three-year code revision cycle, staying current with the ICC and IAPMO (International Association of Plumbing and Mechanical Officials) updates. Smaller states tend to move on longer cycles, sometimes adopting every six or nine years.
Instead of reprinting the full ISPSC document, the state code typically includes a short statement that ties the local law directly to that standard.
For example:
•. In the 2015 Texas Residential Code, section 326.1 states: “The design and construction of pools and spas shall comply with the International Swimming Pool and Spa Code.”
•. The 2018 Tennessee Residential Building Code uses nearly identical language in its own section 326.1.
This simple line means that the entire ISPSC—every clause, every diagram, every standard—becomes part of that state’s enforceable building law.

What’s Inside the ISPSC?
When a standard is adopted by reference, you’re bound to comply with all of it. That includes requirements for:
•. Water circulation rates and line velocities
•. Floor contours, slope transitions, and steps
•. Handholds and ladder spacing
•. Anti-entrapment and anti-drowning features
•. Safety barriers, fencing, and alarms
•. Structural load and shell integrity
•. Equipment placement, bonding, and electrical standards
In short, “adopted by reference” brings the entire ISPSC—and all of its subsections—into play for every new pool or spa construction project in that jurisdiction.
When Local Jurisdictions Modify the Code
Local municipalities do have some authority to modify state codes, but they can’t do it informally. To avoid enforcing specific portions of the state building code, a local government must pass a formal resolution listing every section of the state code that they are choosing not to adopt.
This is rare, but it happens. For example, California and Florida both have their own pool-specific codes that go beyond the ISPSC. These state-level codes are considered more stringent than the ICC’s model code, so they don’t need to reference it directly.
However, for the vast majority of states, the ISPSC—or another comparable standard—is part of the law by reference.
Inspectors Are Not the Final Authority
Here’s where many builders get tripped up: local inspectors do not routinely read or study the building codes in full detail.
Most inspectors rely on experience and precedent. It’s not until they review a set of plans that cites a specific code section or standard that they realize a particular provision applies. That’s why a project can “pass inspection” even though it’s not fully compliant with the adopted standards.
In these situations, ignorance of the code is not a defense—for the inspector or the builder. But while inspectors are largely protected by sovereign immunity, meaning they can’t be sued for missing violations, builders and designers are not.
If a defect later leads to injury or property damage, the responsibility lands squarely on the contractor or design professional. Courts have consistently ruled that “passing inspection” does not exempt a builder from liability if the work fails to meet applicable codes and standards.

The Legal and Financial Reality
In personal injury or construction defect litigation, one of the first questions attorneys ask is: “Was the work code-compliant?”
If the answer is no, it doesn’t matter that the project was approved by a local inspector. The standard of care in these cases is what the law requires, not what the inspector accepted.
Builders and designers are legally responsible for:
•. Knowing which codes apply in their jurisdiction
•. Keeping current with code updates and revisions
•. Ensuring that all referenced standards are followed
•. Documenting compliance throughout the project
Failing to do so can expose contractors to claims of negligence, breach of contract, or professional misconduct, even years after the project is complete.
“It Passed Inspection” Is Not a Defense
The concept of sovereign immunity exists to protect public officials, including building inspectors, from lawsuits when they make honest mistakes. That protection does not extend to private builders.
In the eyes of the law, you’re the expert. You’re expected to know the applicable codes and standards. When a violation exists, you can’t rely on an inspector’s oversight as a shield.
Saying, “But it passed inspection,” is equivalent to admitting you didn’t understand your own obligations under the law.
Staying Ahead of the Curve
So, where should builders go to stay informed? The most accessible resource is UpCodes, an online library that provides searchable access to state-specific building codes and referenced standards.
UpCodes makes it easy to:
•. Search your state’s adopted code cycles
•. Review appendices for referenced standards
•. Track amendments or local modifications
•. Stay up to date on pending revisions
It’s also a good practice to maintain a copy of the current ICC-ISPSC or your state’s equivalent pool code in your office or jobsite trailer. Regularly reviewing it with your design and field teams helps prevent costly oversights.
A Builder’s Responsibility
Complying with building codes and referenced standards isn’t about passing inspections—it’s about protecting lives, property, and your professional reputation.
Builders who study their codes, document compliance, and communicate clearly with inspectors and clients show the kind of professionalism that defines true craftsmanship.
Codes aren’t arbitrary red tape; they’re the accumulation of decades of engineering, safety research, and field experience. When you follow them—not just the parts you know, but the full scope of what’s adopted by reference—you’re doing more than meeting legal requirements. You’re building with integrity.
Final Thoughts on the Subject
The next time you hear someone say, “But it passed inspection,” remember this: inspections are a checkpoint, not a certification of compliance. The responsibility—and the liability—always comes back to the builder.
Do your homework, know your state’s adopted standards, and make compliance a cornerstone of every project. It’s not just good business—it’s the law.
Contractors and Builders
LATICRETE Expands HYDRO BAN® System to Speed Up Shower Installation
New Peel & Stick Sheet Membrane Accessories and Modular Shower Pans Deliver Economical Options for Installation Flexibility
Bethany, CT – LATICRETE, a manufacturer of globally proven construction solutions for the building industry, announces expansions to its HYDRO BAN® Shower System. New peel-and-stick sheet membrane accessories, modular shower pans, and preformed curbs make their debut. The new products are specifically designed to deliver streamlined waterproofing installation options for tile professionals and contractors.
Professional-Grade Peel & Stick Waterproofing Accessories
Seven new HYDRO BAN Peel & Stick Sheet Membrane Accessories are now available, delivering industry-first innovation for mess-free wet area installations. Each features a non-organic adhesive to circumvent the mold and mildew concerns that can arise with organic chemistries in wet areas. The expansion includes sealing tape in three sizes, preformed inside and outside corners, a pipe collar, and nail circle patches. Whether sealing around pipes, corners, or wall seams, the new accessories eliminate the need for additional adhesives or mortars for membrane installation.
“These accessories are designed to make waterproofing as intuitive as possible,” said Dustin Prevete, senior group product manager at LATICRETE. “Both experienced tile setters and those new to waterproofing will find a fast and reliable application delivered through a simple installation method: just peel, stick, and seal.”
The peel-and-stick format ensures consistent adhesion and flexibility that minimizes user error. When used in conjunction with other vapor resistant waterproofing solutions, they are an ideal choice for steam rooms, steam showers, bathrooms, and other high-humidity environments.
Modular, Pre-Waterproofed Pans for Efficient Shower Installations
The new HYDRO BAN Modular Pre-Sloped Shower Pan and HYDRO BAN Preformed Curbare compatible products engineered to significantly reduce shower installation time and complexity. The pans, available in seven common sizes with both center and off-center train options, feature a pre-applied waterproof coating and ship in a flat-packed, multi-piece format for flexible jobsite handling and field customization. They offer a more economical solution than the one-piece pan, allowing for additional design possibilities and less shipping and storage hassle. The new flat-edge curb is available in 24″, 48″, and 72″ lengths for enhanced compatibility and installation versatility.
“These are the only pre-waterproofed, modular, multi-piece shower pans available on the market today,” added Prevete. “They meet the growing demand for prefabricated shower pans that are easier to install, store, and ship, all while providing compatibility and warranty.”
The new modular pans and compatible flat-edge curbs offer a simplified alternative to custom pre-sloped units, offering an easier dry fit, and allowing contractors to adjust sizing on-site using built-in grid lines. These new products are fully compatible with the HYDRO BAN Shower System, allowing for cohesive, code-compliant installations.
System-Driven Simplicity, Proven Performance
The launch of both products represents the latest innovations from LATICRETE, the most trusted name in the industry. They echo the brand’s ongoing commitment to purpose-driven innovation, offering trusted waterproofing solutions that adapt to the needs of today’s jobsite. The HYDRO BAN line expansion in particular lets users select the premier solutions for a complete shower installation that align with their specific installation preferences.
All components comply with ANSI A118.10 standards and are fully compatible with the HYDRO BAN Shower System. When used together, these high-performance products also maintain the industry-leading LATICRETE system warranty, all while saving time and reducing labor.
For more information on the HYDRO BAN Shower System and its latest additions, visit www.laticrete.com/newproducts.
Contractors and Builders
Marcus Sheridan: The Pool Marketing Playbook That Changed Everything
When the financial crisis of 2008 threatened to strain River Pools, Marcus Sheridan made a decision that not only saved his business but also reshaped how an entire industry thinks about marketing. Today, Sheridan is recognized as one of the foremost voices in digital sales and marketing strategy, a sought-after keynote speaker, and the author of They Ask, You Answer—a book that has become required reading for business owners looking to thrive in the digital age.
Sheridan co-founded River Pools in 2001 with two partners, starting with modest ambitions and a broad focus that included above-ground pools, hot tubs, and a retail store. Things were steady, but when the recession hit, the future of the company looked bleak.
“It looked like we needed to file bankruptcy,” he recalled. “It was during this time though, that I really started to just learn more about the way the digital buyer was evolving.”
The Strategy That Changed Everything
Instead of retreating, Sheridan dove into inbound marketing, drawing from resources like HubSpot, and quickly realized the path forward was through answering every single question potential buyers had ever asked.
“We said, ‘We’re gonna become like the Wikipedia of fiberglass pools. If anybody has a question, good, bad, or ugly, we’re gonna address it. We’re gonna own it with text and with video. We’re just gonna go full send on this.’”
That approach transformed River Pools into the most visited swimming pool website in the world. One of the most impactful moments came when he addressed the question most pool companies avoided: pricing.
“This is literally the first question everybody wants to know,” he said. “We were the first pool company in the world to address how much an in-ground pool costs on our website.”
That one article, written in 45 minutes at his kitchen table, has generated over $35 million in revenue.
Why the Industry Still Resists
Even with proof in hand, many contractors still avoid talking about pricing. Sheridan says it comes down to three myths: every job is different, competitors will use it against them, and customers will be scared off by the cost.
“Just doing that [explaining cost variables] induces a ton of trust,” he said. “And if your competitors don’t already know your pricing, they’re asleep at the wheel.” But perhaps the most critical insight is this: “What we know scares people away is when they can’t find any information on pricing.”
Creating Tools for the Modern Buyer
Today’s buyer doesn’t want to speak to a salesperson until they’re ready. Sheridan calls them the “self-service buyer,” and he built PriceGuide.ai to address their expectations.
He shared a case study from AE Pools & Landscape, which added a pricing estimator to its website in early 2024. “Last year they got 400 leads for the entire year. This year, they’ve gotten 1,200 leads so far. They closed 300 sales and have $5 million in the pipeline.”
That $200 tool, he said, took the company from $3 million to a projected $10 million in one year.

Where AI Is Taking Us Next
Sheridan believes AI will soon be a standard part of how consumers shop for contractors. “Homeowners are going to tell their AI assistant, ‘We want a swimming pool. Research the local companies, give us estimates, and tell us who you’d choose and why.’”
And the contractors who don’t have price estimators? “You don’t get the recommendation.”
He’s confident in his prediction: “Within five years, 90% of all swimming pool companies will have a pricing estimator on their website. Mark my words.”
Missed Opportunities in Video
Asked about the most common marketing mistake contractors make, Sheridan didn’t hesitate: “Video, lack of. It’s not close.”
He believes YouTube may soon be more important than a company website. One-to-one video, project documentation, and consistent short-form content all help create trust.
“The first time the homeowner sees the salesperson’s face shouldn’t be when they walk up the driveway. Shame on you if that’s the case.”
He emphasized the need to document every job. “We’re one of the most visual products in the world. If you’re not taking video of every job—before and afters, showing the process—you’re missing the boat.”
Why You Should Talk About the Competition
Sheridan doesn’t shy away from comparison content, even if it means steering a prospect toward a different product or competitor.
“If somebody asks, ‘Are there other pool builders you’d recommend?’—am I gonna ignore it? No, because they’re not ignoring it.”
River Pools even built a quiz tool that sometimes recommends vinyl or concrete—though they only sell fiberglass. “Why would we do that? Because that’s what buyers want. And I generate way more leads because of it.”
Becoming a Trusted Brand
In Sheridan’s view, being known and trusted isn’t optional—it’s survival. “The most important thing you can do for long-term success is build a known and trusted brand in your market. If you’re not known, and if you’re not trusted, you will fail.”
He urges contractors to stop outsourcing everything and start participating directly in brand-building.
“Stop waiting for somebody else to build your brand. You gotta have a dog in the fight. You gotta be the one to hit record often.”
Looking back, Sheridan says the tactics he used in 2009 wouldn’t be enough today. Text-based blog posts and a few YouTube videos were groundbreaking then, but social media, short-form video, and AI tools are now essential.
“You can’t just answer your customer questions on your website and think that will be enough. It’s not. You’re gonna have to do more than that. If you wanna scale to big numbers, you’ve gotta think more like a media company.”
But even as the tools evolve, the philosophy stays the same: meet buyers where they are.
“Everything your buyer wants—those are the same things you want. You wanna watch video when you’re researching? Meet the consumer where they are. It doesn’t matter if you think you have a face for video or not. You’re still gonna ask them for money, so you better hope they trust you.”
For Sheridan, the future belongs to pool companies that embrace that mindset. “You’re not just a construction company. You’re a sales and marketing company. If you’re not known and trusted, you won’t last. But if you lean into what your buyers really want, you’ll be amazed at how much your business can grow.”
Ready to take a deeper dive?
Listen to our entire conversation with Marcus Sheridan on the Pool Magazine Podcast.
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