How exactly does an overflow coping swimming pool work?

The modern overflow swimming pool system is becoming the preferred choice in today’s most cutting-edge projects. Thanks to the technical and design evolution of special ceramic pieces, architects and construction professionals can now opt for this system, whose main feature lies in the water flowing over the edge, creating a seamless aesthetic effect where the pool water is continuously refreshed.

Find out  How exactly does an overflow coping swimming pool work?

The overflow coping system offers complete integration between the interior and exterior of the pool, creating a visually harmonious space. To achieve this striking finish, it is essential to use specially designed ceramic pieces developed specifically for this system. In addition to fulfilling their functional roles in lining and filtration, these elements are becoming increasingly important in terms of aesthetics.

Exagres offers a wide range of collections featuring all the special pieces required for an overflow pool, including ceramic grilles and overflow edges, along with various finish options such as wood, stone, marble, or concrete.

But… how does an overflow pool work?

Operation

In overflow pools, water constantly flows over the edge, creating the optical illusion where the waterline blends seamlessly with the horizon. To achieve this effect, it is essential for the pool water to remain consistently clean and balanced at all times.

Unlike skimmer pools, in which the water bounces of the sides, an overflow system keeps the water in constant motion: the overflowing water passes into the channel that surrounds the pool through a ceramic grid; this water moves on to the balance tank and then the filter to be later returned to the pool after filtration.

The various construction options for overflow pools include the infinity and lake effect varieties, genuine visual spectacles in terms of aesthetics and constructive design

The Infinity Pools and lake-effect pools are the most common types within the overflow system. In the case of infinity pools, they achieve complete integration with the surrounding landscape. The key construction element is the pool edge, which sits just below the water level, allowing the water to spill over in a continuous cascade. For lake-effect pools, the most essential component is the ceramic grating, through which the water flows directly into the channel and filtration system.

Overflow pool diagram

An overflow pool requires precise execution and specific materials to ensure the proper functioning of the overflow system. The following technical diagram illustrates the structural and ceramic layout of Exagres’ overflow edge system:

• Ceramic overflow edge : a key piece in the coping system that enables the water to overflow evenly into the grate.
• Ceramic grating : fitted between the edge and the gutter, it allows water to flow in a controlled way into the drainage system.
• Concealed perimeter gutter: internal structure that collects the overflow water and channels it towards the compensation tank.
• Internal Cove: facilitates cleaning and prevents dirt from accumulating in hard-to-reach corners.
• Overflow Corner: resolves outer corners, ensuring uninterrupted visual continuity.
• Grating Corner: ensures water flow even in inner corners, maintaining a uniform overflow.

Among the various solutions for overflow pools, the infinity and lagoon-effect types stand out as the most striking, both for their aesthetic value and their construction complexity.

Filter system

The  overflow pools are the cleanest type of pool; any leaves or debris that fall into the water are carried away over the edge before they can sink, accumulate, or decompose. Thanks to their distinctive filtration system, the water is fully and continuously renewed in a short period of time. As a result, the pool remains consistently clean, with a crystal-clear appearance.

One of the most visible and important components in this type of installation is the overflow pool edge. These pieces serve not only an aesthetic purpose but also a technical one, as they allow water to flow evenly towards the drainage grate.

Exagres offers  overflow pool edges in various sizes and finishes — wood, cement, stone, or marble — all with a  non-slip C3 · ≥R11 surface finish.

In addition, all pieces are rectified to ensure a precise fit and a professional installation. Interior and exterior angles, along with modular grilles, provide seamless visual continuity—even in pools with corners or curved edges.

Thanks to this wide range of ceramic solutions, it’s possible  to adapt the design to any outdoor setting, be it minimalist, rustic, or contemporary.

IF YOU HAVE ANY QUESTIONS OR WOULD LIKE MORE INFORMATION ABOUT OUR PRODUCT RANGES FOR OVERFLOW POOLS, PLEASE DO NOT HESITATE TO GET IN TOUCH . WE WILL BE GLAD TO HELP