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Should the Bubble Side of a Solar Cover Go Up Or Down?


Solar pool covers offer more than aesthetic appeal; they can actually help decrease evaporation and chemical loss by protecting against evaporation and the sun’s UV rays.

Solar cover bubbles up or down installations can help combat algae growth while protecting water from bird droppings and leaves. However, it is crucial to understand how to install one properly for maximum effectiveness.


Solar covers are an effective way of maintaining heat in your pool and reducing water evaporation while protecting it from leaves, debris, and UV rays. To get the maximum benefit out of them, however, you must choose the appropriate size solar blanket and know how to place it correctly – including whether the bubble side should point upwards or downwards.

Solar cover bubbles are one of the keys to solar cover’s effectiveness at heating your pool. Like bubble wrap found on packages, these mini insulators trap heat and transfer it directly to your water. Furthermore, they help prevent water evaporation while making your pool more usable even when covered.

At first, glance, placing the bubbles facing up can seem advantageous; however, their absence means that heat transfer between them and your pool water may become insufficient and damage your solar cover if left exposed to direct sunlight for too long. When not being used, solar covers should always be stored out of direct sunlight, with reflective surfaces covering them to maintain optimal performance.

Be mindful that solar covers can only transfer so much heat to your pool; for more extensive or more profound collections, additional heating measures may be needed, such as using a pump to reach desired temperatures. To keep things under control, investing in a swimming pool heater would be wise.

Keep in mind that solar covers are only as effective as they are kept clean and clear, meaning regular rinsing of the body to remove dirt or debris that has accumulated, as well as periodic sweeping to help prevent algae growth.

Please wait at least 2 to 3 weeks prior to scheduling the final trim in order to allow your solar cover enough time for its surface area to fully flatten out in response to sunlight, thus helping it do its job and saving you money on energy bills.


Solar pool covers are powerful tools designed to enhance your swimming experience. Their surface’s bubbles, meant to face downward onto your pool, act like miniature magnifying glasses to capture and direct sun rays into the water for extended warmth. Furthermore, these covers reduce heat loss through evaporation while serving as insulation to retain more heat in your water body.

With the dark smooth side facing up, solar blankets can prevent algae growth while making debris removal from pools easier – including bird droppings, leaves, and twigs – as well as prolong its lifetime.

Though bubble pool blankets provide insulation benefits, the way that they are installed also plays a part in their effectiveness. Placing the bubbles lower can improve their insulating property due to air trapped between their bubbles – although this might seem minor at first, this actually helps lower energy costs by ensuring more heat from the sun actually makes its way into your pool – this is especially useful in cold and icy climates or if your collection doesn’t require heating systems. Furthermore, having bubbles lower helps avoid freezing over solar covers, thus prolonging their lifespan significantly and increasing their longevity significantly!

Pool Use

Some solar pool covers, more commonly referred to as bubble blankets, are designed to capture and store solar energy within your swimming pool, warming its waters and lengthening your swim season. Their magnetic bubbles work like magnets to absorb and transfer this heat directly into the pool’s waters – however, if not installed properly, the cover could lose half its effectiveness.

As long as it remains in place, the cover helps keep leaves, pollen, dust, and other debris out of the water, saving time spent cleaning filters and skimmer baskets and postponing chemical treatments. But without proper care being provided to it over time, it could become distorted or warped over time and become brittle or tear more quickly, causing further problems for chemical treatments and filter replacement.

To preserve the condition of your solar blanket, always store it out of direct sunlight when not in your pool. This helps to avoid chemical build-up as well as dirt accumulation, while regularly cleaning can lower the risk of debris penetrating bubbles and encouraging algae growth.

Use of the solar blanket with bubbles down is optimal, as this maximizes heating efficiency and minimizes evaporation more effectively than using it with the flat side resting on the water. However, bubbles up may provide extra solar heating power to extend swim season – make sure that proper algae prevention measures are being employed and maintain constant water temperatures to avoid too much heat loss.

Another way to reduce evaporation is with a solar reel for your swimming pool. This device sits at the base of your collection and enables you to roll up and tuck away your solar cover when not needed, reducing sunlight exposure while hiding it away when not required. However, these are more costly and difficult to install.

Solar reels can often be seen in your yard, which compromises privacy as much as solid or mesh cover would. Furthermore, these devices require space-consuming storage solutions.

Solar Reel

Transferring and folding up a solar cover manually can be both time-consuming and laborious, especially with larger pools. A solar cover reel makes this process much faster and reduces damage caused by manually folding and handling it on your own.

There is an array of solar reels available online that are capable of fitting various-sized solar covers, making it essential to find one that meets your specific requirements. A few key factors worth keeping in mind include:

Material: The material chosen for your solar reel will determine its durability and ability to withstand harsh weather conditions. Some fabrics are more susceptible to corrosion or rust than others; you should make sure yours is made from high-grade materials for the best results.

Size: The size of your pool will determine which solar reel best meets its needs. A larger pool may need a more extensive solar cover to hold all of its water and, therefore, will need an axle with enough strength and capacity to support that weight. Furthermore, thicker solar covers tend to weigh more than thinner ones, so make sure that your solar reel can bear their additional burden.

Consideration should also be given to how many sections your solar reel has since more teams will make it stronger and better handle the weight of your cover. Some reels also feature grooved reel rod designs, which prevent straps from dislodging, which is another means of improving the durability of solar cover reels.

Solar covers can save money on pool heating costs by helping reduce evaporation. Children and pets mustn’t swim under it; trapping heat could pose dangers that children could not readily identify as harmful to swimming safely. Please take all necessary measures to make sure it’s always entirely removed prior to swimming in order to safeguard children and pets alike.