Infinity edge swimming pools, also known as negative edge pools, are renowned for their stunning visuals, where the water appears to merge seamlessly with the horizon. A deck level pool or zero-edge pool, with its waterline blending with the terrace of the house, offers a reflective mirror effect on the pool’s surface. However, there’s more to these pools than just their beauty. The water quality and overall maintenance experience are significantly improved compared to traditional pools.

How does an infinity pool work

Infinity edge pools utilize an overflow system, a reverse hydraulic mechanism that maintains clean water and efficiently mixes maintenance products. This system ensures superior water quality and reduced maintenance effort.

Construction features

Most infinity edge pools are built using reinforced concrete, either poured or shotcrete, in various shapes including free-form and rectangular. Steel or wood forms can be used, and sometimes concrete, or polystyrene shuttering blocks serve as lost formwork. Additionally, kit pools and pre-fabricated shells are available from some manufacturers.

Infinity edge pools are typically in-ground, either fully buried or semi-buried, depending on the land’s profile. 

Various pool surfaces types can be used: reinforced PVC membranes, fiberglass, mosaics, pebble tec, quartz, polished aggregate, etc. Each type of surface offers unique advantages and potential drawbacks, so it’s essential to choose one that aligns with your preferences and requirements.

negative-edge-pool-design-and-site-management-by-morana

Filtration system features

piscine débordement technique

This diagram is provided here to illustrate the difference between a skimmer pool and an overflow pool.

In traditional pools, skimmers in the wall collect water, which is then filtered and returned to the pool through return inlets, maintaining the waterline about 15 cm below the coping stone.

The water line in these vanishing edge pools is close to the coping stone. In a deck level pool, creating a mirror effect, the water line is perfectly aligned with the pool deck.

 

The main distinction here is that the water is not taken directly from the pool itself for filtration. Instead, it first overflows into a separate collection system before being filtered and returned to the pool. This collected water is directed into a surge tank or balancing tank, which temporarily holds the water. This method helps maintain a consistent water line and enhances the aesthetic effect of the infinity edge. After filtration, the water is returned to the pool through inlets on its walls and bottom.

As with traditional pools, it is the same water that circulates in the pool. Therefore, contrary to what is written on the internet, there is no overconsumption of water.

Benefits of an infinity edge pool

Infinity edge swimming pools offer more than just stunning visuals; they provide superior water quality and reduced maintenance due to their advanced overflow systems. 

Technical benefits

The overflow system ensures continuous circulation, resulting in the best water quality. With the flow of water from the bottom to the top, treatment products and heat pump-heated water are better mixed. This means that maintenance of the pool and the treatment of the water are made easier.

Salt chlorinators replace chlorine for swimmers’ pleasure. Previously reserved for public pools, private pools can now use the overflow system.

Once reserved for public pools, the efficiency of overflow is now available for private pools.

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A custom-made infinity swimming pool

Architects and pool builders can design and build this type of pool, but if you want more control and want to save money, you’re probably better off working with a pool designer and construction company.

Affordably build a pool

Despite infinity pools being technically complex, non-specialized companies can install your dream pool at a reasonable price.

Seek professional support for your pool project.

Aesthetic advantages

Seamless Horizon EffectA negative edge pool creates the illusion that the water extends infinitely to the horizon, blending seamlessly with the surrounding landscape. This effect is particularly stunning when the pool is positioned to overlook a scenic view, such as an ocean, lake, or mountain range.

Mirror-Like SurfaceThe water line in a zero-edge pool is kept at the same height as the pool deck, creating a mirror-like surface that reflects the sky, clouds, and surrounding environment. This reflection enhances the visual appeal and creates a calming, serene atmosphere.

Modern and Luxurious AppealThe sleek design and clean lines of an infinity pool exude modern sophistication and luxury. The minimalist aesthetic fits perfectly with contemporary architectural styles and adds a high-end touch to any property.

Enhanced Visual SpaceBy eliminating the visible edge of the pool, an infinity pool makes your backyard appear larger and more open. This visual trick can make a property feel more expansive and grand.

Integration with Nature: Infinity pools are often designed to blend harmoniously with their natural surroundings. Whether it’s a garden, beach, or hillside, the pool’s edge seems to vanish, integrating the man-made structure with the natural environment seamlessly.

Unique Water Features : The overflow edge of an infinity pool can be designed to create waterfalls or cascading water features. These additional elements enhance the pool’s beauty and add soothing sounds of flowing water, contributing to a tranquil ambiance.

Versatile Design Options : Infinity pools can be customized in various shapes, sizes, and styles to match the aesthetic vision of the homeowner or designer. This versatility allows for creative and unique designs that stand out.

Enhanced Property Value :The visual appeal and luxury associated with infinity pools can significantly increase a property’s value. Prospective buyers typically view negative edge pools and zero-edge  pools as a desirable feature that adds to the overall attractiveness and prestige of the property.

The key components of infinity edge pool installation

When building a semi-inground or inground pool that spills over, it is imperative to integrate special equipment. These items are not costly to purchase, but they are crucial to ensuring the longevity of any indoor or outdoor swimming pool. If you do not buy them, using and maintaining the pool can be quite a hassle.

The catch basin system

Without a catch basin or surge tank, the pool cannot spill over. Excess water stored in this small basin is sucked in by the filtration pump, allowing the pool to spill over. Several articles have been written about the calculation of its volume; it is necessary to consider not only the volume of water in the pool, but also the length of the overflow and the number of expected bathers. Water will be lost through the overflow if the tank is too small to handle rainwater or excessive numbers of swimmers. If you build it too large, you waste money.

Water level controllers

It is also essential to have a regulation in the balance tank. Therefore, it simplifies your life and helps you avoid damaging consequences, such as a lack of water. There are several more or less economical solutions available: floats, probes. A non-return valve and an automatic filling solenoid valve are also necessary.

The gutter

The gutter serves to collect water spilled over from the main pool and feed the catch basin. The location of this channel depends on the type of overflow; in the case of an infinity pool, it is located beneath the weir, the side(s) from which the water overflows. In the zero-edge pool, the channel is peripheral to allow water to spill over on all sides.

overflow-gutter
Deck level pool pipes connection

The piping network

The piping network is the backbone of a negative edge pool or a zero-edge pool, crucial for maintaining water quality, ensuring efficient circulation, and creating the signature visual effect. A well-designed and properly installed piping system enhances the pool’s performance, longevity, and energy efficiency, while also simplifying maintenance and troubleshooting.

Tips for successful integration

To seamlessly integrate an infinity pool into its environment, follow these tips:

👉 Location Selection: Choose a sloped area with an unobstructed view, considering orientation, sunlight, and wind conditions.

👉 Shape and Size Choice: Opt for a shape and size that fit the available space, desired style, and intended use of the pool. Avoid overly complex or large configurations that could disrupt the balance with the surroundings.

👉 Materials and Colors Choice: Select materials and colors that blend with the landscape, using contrasts or shades. 

Debunking infinity pool myths

There are numerous common misconceptions about the infinity pool design and its maintenance that regularly lead to confusion. Let’s clarify these myths:

✔️  Balancing Tank Size: It’s a myth that the balancing tank must represent at least 10% of the pool’s volume. The actual requirement is often less.

✔️  Second Pump Necessity: A second pump is not generally required unless compensating for a poorly executed overflow.

✔️  Filtration System Size: There’s no need for an oversized filtration system. Standard sizing suffices.

✔️  Maintenance Requirements: Contrary to popular belief, infinity pools typically require less maintenance due to continuous water flow, preventing dirt and algae buildup.

Costs saving tips

If you’re a proud owner of a regular pool with skimmer, it is possible to convert it into a vanishing edge pool. An in-ground concrete pool can be renovated using the existing framework. There is the possibility of adding some features, such as a tanning ledge, a spa, etc. 

While infinity pools are more complex and typically cost 10-15% more than regular pools, significant savings can be achieved by opting for a DIY approach or hiring a general contractor.

Conclusion

Infinity edge pools are not just a visual delight but also a practical investment in luxury and efficiency. Their design ensures enhanced water quality, reduced maintenance, and a seamless integration into any landscape. By carefully planning and incorporating essential features, homeowners can create a breathtaking and functional infinity pool that elevates their property’s appeal and value.

Partnering with a professional pool designer guarantees that your infinity pool will not only meet your aesthetic and functional requirements but also comply with all safety and regulatory standards. Pool designers offer tailored solutions that fit your specific needs, budget, and landscape, delivering a unique and personalized pool that stands out.