For homeowners with an above ground pool, the question of how to manage the water surface is a constant concern. A kidney shaped pool cover presents an effective solution, acting as a barrier against debris while significantly reducing water loss. Unlike simple netting, these covers are custom-fitted enclosures that provide a complete seal, protecting the investment within the pool.
The Core Benefits of a Custom Fit
The primary advantage of a kidney shaped pool cover is its precision engineering for your specific pool dimensions. Because the kidney shape is not a standard rectangle, off-the-shelf products are ineffective. A custom cover ensures that the vinyl or mesh fabric aligns perfectly with the coping, eliminating gaps where leaves and insects can enter. This tailored fit also distributes stress evenly across the surface, making the cover more resistant to wear and tear during seasonal use.
Debris and Weather Defense
During the fall, trees surrounding the pool area become a significant liability. A quality kidney shaped pool cover acts as a roof, preventing leaves, twigs, and pine needles from sinking to the bottom of the water. By keeping the bulk of the debris on top, the cover drastically reduces the cleanup time required in the spring. Furthermore, it shields the pool from heavy rain, which can introduce contaminants and dilute the chemical balance, saving both time and money on water treatment.

Water Conservation and Heating Efficiency
Evaporation is a silent enemy of pool owners, responsible for thousands of gallons of water loss annually. A properly sealed kidney shaped pool cover creates a humid environment above the water, drastically slowing the evaporation process. This conservation directly translates to lower municipal water bills and less frequent refilling. Additionally, the cover traps solar heat during the day and acts as an insulator at night, extending the swimming season without relying solely on gas or electric heaters.
- Reduces evaporation by up to 95%.
- Keeps out bugs and small animals.
- Minimizes chemical dilution from rain.
- Retains heat for warmer water.
- Decreases the need for harsh cleaning chemicals.
Material and Safety Considerations
When selecting a kidney shaped pool cover, the material composition is crucial for durability. Heavy-duty vinyl with reinforced UV protection will resist cracking under direct sunlight, while mesh options allow rainwater to pass through, reducing the weight on the pumping system. Safety is also a priority; modern covers are designed to withstand significant weight, preventing accidental falls into the water. Look for covers that meet safety standards to ensure the cover serves as a protective barrier, not just a maintenance tool.
Installation and Long-Term Care
Proper installation is the difference between a secure cover and a frustrating tarp. Most systems utilize a cable and winch mechanism, allowing the cover to be tightened across the unique contours of the kidney shape. It is essential to tension the cover correctly to prevent water accumulation in the center, which can lead to stretching or tearing during the winter. When the swimming season begins, the process is reversed, allowing the stored solar heat to warm the water quickly.

Maintenance of the cover itself is relatively straightforward. Debris that accumulates on top can be swept off with a soft-bristle broom or washed down with a garden hose. Avoid using harsh detergents that might degrade the vinyl. Regularly check the stitching and anchor points for signs of wear, especially after severe weather. By treating the cover with care, homeowners can expect a functional lifespan of many years, making it one of the most cost-effective accessories for an above ground pool.























