These insulating thermal blankets are made of plastic and contain thousands of air bubbles. Sunlight is able to pass through the sheet to heat the water, but the thickness of the plastic and the air pockets act as an insulating barrier to retain the heat in the water. By trapping the heat from leaving, you will not need to run your pool heater as much. You can easily trim the covers to fit and they can be rolled up used with a solar reel or folded and put away.
Evaporation is a main cause of heat loss. These "bubble covers" as they are also called, act as a barrier to stop your water and chemicals from entering the air.
We offer two styles of solar covers. The blue covers for above ground pools are the standard 8mil blankets. The clear covers are 14 gauge and since they are clear and not as opaque, they allow more sunlight to penetrate to the pool surface.
Covers should be used when the pool is not in use. If there is a lot of sunlight or the ambient temperature is high, you may not need to cover your pool during the day, but it's a good idea to cover your swimming pool at night to prevent heat and chemical evaporation. On cloudy as well as windy days, it's recommended to keep the pool covered.
One side has bubbles and the other is smooth. Place the bubble side on the water and the smooth side on top.