Solar Cover Installation-Bubble Side Up or Down?

by admin on June 14, 2013

Do you Install Your Solar Pool Cover with the Bubble Side Up or Down?  

Solar Cover upclose

That is a valid question many pool owners both experienced and novice, need the answer to. In our humble opinion, ‘bubble side down’ is the best way to heat your pool water (by trapping more of the sun’s rays and preserving your chemical content.) In this way, the UV rays from the sun will heat the bubbles and then transfer them to your pool water. Since the bubbles are facing down directly into your pool, it heats them that much faster. Overall, this seems to be the best answer that we can give you.

For those that prefer ‘bubble side up’ the process to heat up your pool water, might take longer and eventually damage the bubbles themselves. This is because the bubbles that retain the heat are not facing the water directly. They are just over heating in the sun with nowhere to go. In other words, the sun’s rays need to flow through another layer of the cover before it can reach the water supply.

If you are looking for a faster solution overall, bubble side down seems to be the way to go. Think of solar pool covers as a thermal blanket for your pool. In order for it to heat up a large area in a short span of time it needs something to reflect directly off the sun’s UV rays. As the sun heats up the cover, it begins to heat up the water lying directly beneath it, and depending on how long you keep the cover in the water, it will last well into the evening when the temperatures start to cool off. Whichever way you bubble, we wish you a fun and relaxing time in the pool!

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{ 3 comments… read them below or add one }

Eddy KILLETTE May 24, 2014 at 12:03 pm

Your guy said the solar blanket would raise the water temperature by 15 degrees? I have a clear solar blanket and there is no way it will raise the temperature that much. 5 degrees maybe but 15, no way. My pool gets sun all day, I live in the south and 15 degrees increase is no happening. Just wanted to throw that out there.


fred July 31, 2015 at 7:44 pm

The more surface area in the water the more it will heat the water . The best idea for a better solar cover is to increase the depth of the bubbles into the water.. Just saying.
Any ideas on how to replace the solar cover reel. I need to get new handles and stand but the 18 foot metal holder for the cover is fine. Dont want to just throw it way.


Darlene Burnell August 15, 2015 at 6:41 pm

i bought a solar blanket with real fm you for my above ground pool it doesn’t wind up good at all when it is time to cover the pool it takes 2 people to do this it rolls off to one side of the pool and we struggle to get it over the pole to the other side the pole goes across the middle of the pool my pool is 21 round the blanket is getting ruined fm grabbing and pulling can u help me I am in my 60s and was told I should have no problem I bought this fm you so you should be able to look it up


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