An infinity pool, also called an overflow pool or vanishing-edge pool, is a swimming pool where the water flows over one or more edges, so that the water surface optically appears to merge into the landscape or the horizon. The “infinite” effect is created because the overflow edge is virtually invisible.
How does it work?
The technique relies on a hidden water circuit:
- The water flows over the overflow edge and down into a catch channel or overflow gutter
- From there it runs into a buffer tank (balance tank) that absorbs the fluctuating volume of water
- A pump continuously drives the water back into the pool, so that the edge keeps overflowing
The overflow edge must be built extremely accurately level; a small difference in height is immediately visible as an uneven waterfall.
Application
- Houses on slopes — the effect is best when there is a lower-lying view behind the edge
- Hotels and resorts — as an eye-catcher with a view of the sea or mountains
- Roof gardens and terraces — where the edge coincides with the facade or terrace edge
Points to note
- Construction and weight — the buffer tank and channel need extra space and a solid, well-calculated foundation
- Accuracy — the overflow edge requires skilled, exact work
- Cost — an infinity pool is considerably more expensive than an ordinary pool because of the extra circuit, the buffer and the detailing
- Energy — the continuously running pump increases energy consumption
Related terms
- Outdoor space
- Water barrier
- Foundation
- Spirit level
- Fall (slope)
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