Infinity Edges, Perimeter Overflow & Pools on Structure
The specialty end of custom concrete pool construction — edges that vanish, water that runs over all four sides, and pools built on structure instead of in the ground — designed and built by Into H2O Pools & Spas across Southwest Florida.
Some Pools Are Built. These Are Engineered and Built.
Most custom pools are a design problem: shape, features, finish. These pools are a design problem and an engineering problem at the same time. An edge that has to hold a sheet of water dead level. A pool whose water surface sits flush with the deck and spills over every side. A pool that isn't in the ground at all, but built on structure. Get the engineering wrong and the prettiest pool in Florida is a problem that leaks, lists, or never looks right.
That is the tier of work Into H2O Pools & Spas is built for. The company is family-run: Chris Doyle, the founder, still works on pools himself, with over 45 years of hands-on pool construction experience, and Nancy handles permitting and engineering coordination in-house — so the engineering side of a complex project is coordinated by the builder, not passed off and hoped for. Nancy and Chris personally handle every customer themselves, from the first design conversation through the build and for years after it. We treat our customers like family — honestly, some become family to us — and on a specialty project, where the details are unforgiving, that direct line to the owners is worth as much as the craftsmanship.
For the design story — features, spas, entries, lighting — start with the custom pools hub. For commercial refinishing and renovation at scale, the commercial page carries that side.
Infinity, Negative & Vanishing Edges
One feature, three names — the industry uses infinity edge, negative edge, and vanishing edge for the same family of construction, and we'll be honest about that rather than pretend they're three different products. One or more of the pool's walls is built lower than the waterline. The water flows over that edge in a continuous sheet, drops into a catch basin below, and is pumped back into the pool. The effect is the one in the photographs: the water's surface runs out to the horizon, a view, or the Gulf, and the edge of the pool disappears.
Why it's hard: the effect lives or dies on level. An edge that is off by a fraction of an inch doesn't spill evenly — it runs heavy on one end and dry on the other, and the illusion is gone. The catch basin and the circulation behind it have to be sized for the full sheet of water moving over that edge, in wind, with swimmers in the pool. None of that forgives sloppy work, and none of it can be fixed with a nicer finish afterward — it has to be built right, from the structure out.
Where we've done it: edges are part of our custom work at every scale. At 500 Ocean in Boynton Beach, it's our Commercial Infinity-Edge Pool — the edge held to its line at commercial scale. And on Fifth Avenue in Naples, the edge is on the spa: a raised spa whose water vanishes over its edge into the composition of the whole outdoor space — proof that the detail works as beautifully at spa scale as it does across a full pool wall.
Perimeter-Overflow & Mirror-Edge Pools
Take the vanishing edge and run it around all four sides. In a perimeter-overflow pool, the water sits exactly level with the surrounding deck and spills continuously over every edge into a narrow perimeter channel, where it's collected and recirculated. There is no visible waterline and no raised coping breaking the surface — the pool reads as a flat sheet of water set into the deck. Built at its stillest, that sheet reflects the sky and the house like a mirror — the glass-like effect our Southwest Cape Coral 360° Infinity Pool & Spa is known for.
Why it's the hardest edge work there is: a single infinity edge has to be level along one wall. A perimeter-overflow pool has to be level around its entire perimeter, all at once, while water moves over every side. It is the least forgiving construction in residential pool building, and it is a specialty, not an upgrade option.
Where we've done it: on Marco Island, our Blue 360° Infinity Pool & Spa is a large perimeter-overflow lap pool — a long lap pool whose water runs over all four edges, Gulf-front — with a perimeter-overflow spa built the same way alongside it. And in Southwest Cape Coral, our 360° Infinity Pool & Spa — our original 15x30 perimeter-overflow design — uses 360-degree perimeter overflow on both the pool and its integrated spa to create a surface so flat and calm it reflects like glass. It's the pool in our hero photography — and the pool featured in the NBC2 story on why contractor qualifications matter.
A separate project, our 360° Infinity Pool in Northwest Cape Coral, shows the same construction away from the waterfront: a 15x30 dark-finish infinity pool with 360-degree perimeter overflow, its water overflowing on all sides. There's no spa and no canal view — the overflow edge itself creates the view, along with the soft sound of water moving over every side.
Elevated & On-Structure Pools
A standard pool is a hole in the ground with a structure in it. An on-structure pool skips the ground: the pool is built on a constructed structure — an elevated deck, a podium level, the top of a building's lower floors. It's the construction behind high-rise and condominium pools, rooftop-level amenities, and commercial pools that sit above occupied space. Everything that ground quietly provides for an ordinary pool — support, access, forgiveness — has to be deliberately engineered and coordinated when the pool is on structure instead.
Why it's hard: the structure and the pool are one problem, not two. The work has to be coordinated with the building's engineering from the start, built in sequence with the structure it sits on, and finished to the same standard as a pool in a backyard — while nothing about the setting is backyard-simple. It is commercial-grade, engineering-led construction, and most residential builders never touch it.
Where we've done it: in Delray Beach, we built a commercial pool on structure. It's the same capability the condominium and elevated work on the commercial side calls for; the commercial page carries the full telling of that work, including refinishing, renovation, and restoration for properties across Southwest Florida. The same engineering-led approach covers pools, spas, and water features built on structural pilings — including work right on the Gulf, where the structure under the water is the project.
Built in Gunite, Shaped by Hand
Every Into H2O Pools shell is gunite — concrete shot through a hose and shaped by hand over the steel. It doesn't limit a pool to a catalog mold, which is why it's the right method for true custom work: free-form shapes, beach entries, infinity edges, and pools built on structure. That hands-on specialty background goes back decades: Chris co-authored a 2006 WaterShapes magazine article on resort pool and water-feature work in Arizona — read more on our About Us page.
The Thread Through All of It: Engineering Coordination
Look at the three specialties above and they share one requirement: engineering that is coordinated, not improvised. Complex construction requiring engineering coordination is listed among this company's documented strengths for a reason — the edge tolerances, the overflow hydraulics, and the structure under an elevated pool all have to be worked out on paper, with the engineering, before they exist in concrete.
That coordination happens in-house here. Nancy handles permitting, engineering coordination, and material takeoffs as part of how the company runs every project — the same discipline that carries an ordinary custom pool carries the specialty work, with the owners answering for both sides of it.
The extreme example: on Fort Myers Beach, after hurricane damage, we restored a condominium pool that had to be rebuilt on helical piles — a commercial pool brought back with its support structure rebuilt under it. It's the clearest proof of what "engineering coordination" means when the ground itself is the problem.
→ Commercial Pool Renovation & Construction
The Specialty Work, Project by Project
Two of these projects are Palm Beach County work — they're here, like on the commercial page, because they show what this company can build; our service area is Southwest Florida, and the other three are home-region projects.
Marco Island — Blue 360° Infinity Pool & Spa. A large perimeter-overflow lap pool on Marco Island — water running over all four edges — with a perimeter-overflow spa built alongside it. The largest expression of the overflow specialty in our work.
Delray Beach — Commercial Pool on Structure. A commercial pool built on structure in Delray Beach — the proof behind the elevated and on-structure work above, and behind the same service on the commercial page.
500 Ocean, Boynton Beach — Commercial Infinity-Edge Pool. A commercial infinity-edge pool at 500 Ocean — the infinity edge executed at commercial scale, holding its line across a full commercial pool.
Southwest Cape Coral — 360° Infinity Pool & Spa. Our signature build, the original 360° perimeter-overflow design: a surface built so flat and still it reflects like glass. The pool in our hero photography, and the pool at the center of the 2017 NBC2 story — a competitor stole its photograph to sell a pool, then failed to build it. We were the wronged party in that story, and the pool itself is the standing answer.
Naples, Fifth Avenue — Infinity-Edge Spa. The infinity edge on a spa, not the pool: a raised spa on Fifth Avenue whose water vanishes over its edge. The edge detail at intimate scale — and a reminder that specialty work is about execution, not size.
Specialty Pool Construction Across Southwest Florida
Based in Cape Coral. Building — including specialty work — across the region:
Cape Coral · Fort Myers · North Fort Myers · Naples · Marco Island · Bonita Springs · Estero · Fort Myers Beach · Sanibel · Captiva · Pine Island (Bokeelia, St. James City)
→ The full design story — features, spas, entries, and process — Custom Pools in Southwest Florida
→ Commercial refinishing, renovation, and construction — Commercial Pool Renovation & Construction
→ Already have a pool? Remodeling and restoration — Pool Remodeling in Southwest Florida
→ How every project runs, step by step — Our Pool Construction Process
Planning a Pool That Isn't Standard? That's Our Work.
An edge that has to vanish, a pool that has to sit on structure, a project another builder called too complicated — tell us about it, and we'll put together a free, no-pressure estimate. Financing is available through Lyon Financial — ask us for details when we talk.
Into H2O Pools & Spas, LLC — CPC1458552 · 861 SE 47th Ter #1, Cape Coral, FL 33904 · 239-413-7890 · info@intoh2opools.com