A liquid solar cover is a chemical product designed to reduce heat loss and water evaporation in swimming pools. Unlike a traditional, physical solar blanket that you manually place on and remove from the pool’s surface, a liquid solar cover forms a very thin, invisible, and harmless layer on the water’s surface.
This microscopic layer, typically made from an alcohol-based or other biodegradable formula, acts as a barrier that slows down the rate of evaporation. Since evaporation is the main cause of heat loss in a pool, this barrier helps to retain the heat generated by the sun or a pool heater. By reducing heat loss, it helps keep the water warmer and can extend your swimming season.
The liquid layer is so thin that it’s completely unnoticeable to swimmers and doesn’t affect the feel or look of the water. When people are swimming, the layer temporarily breaks apart but reforms on its own once the water becomes still. It’s safe for use with all types of sanitizing systems and is a convenient, low-maintenance alternative to a bulky physical cover. You simply pour the product into the pool water, often weekly or monthly, to maintain the barrier’s effectiveness.
