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Pool Solar Cover: Bubbles Up or Down? (And Other Easy Installation Tips)



How to Properly Fit Your Solar Cover on Your Pool

If you've ever unboxed a new solar cover and found yourself squinting at the bubbles, wondering which side goes where—you’re not alone. One of the most common questions we hear is: Do the bubbles go up or down on a solar cover? Let's settle it once and for all (and help you get the most out of your pool cover while we're at it).

Should Pool Solar Cover Bubbles Face Up or Down?

Short answer? Down. Always down.
The bubble side of your pool solar cover should face the water, not the sky. That’s because the bubbles trap heat from the sun and transfer it into the pool. If the bubbles are facing up, that heat never makes it into the water.

So, if you're searching "pool solar cover bubbles up or down" or "which side of a solar cover goes up" — now you know: bubbles down is the way to go.


How to Install a Solar Pool Cover

Installing a solar pool cover is a straightforward process that can significantly enhance your pool's efficiency. Whether you're wondering how to put a solar cover on a pool or how to install a solar pool cover, follow these steps to ensure a proper fit and maximum benefits.

1. Unpack and Unroll the Cover

Begin by removing the solar cover from its packaging. Unroll it carefully and spread it over the pool's surface. Ensure that the bubble side faces down toward the water, as this orientation allows the cover to absorb and transfer solar heat effectively.

2. Allow the Cover to Settle

Let the cover sit on the pool for a few hours under the sun. This relaxation period helps the material soften and conform to the pool's shape, making it easier to trim accurately later on.

3. Trim the Cover to Fit

Once the cover has settled, it's time to trim it to match your pool's dimensions. Here's how to cut a solar pool cover:

  • Use sharp scissors to cut the cover, leaving about 2–3 inches of extra material around the edges. This overlap ensures complete coverage and accommodates any minor adjustments.

  • For pools with unique shapes or features, consider cutting the cover into sections that fit each area. This approach can make handling and storage more manageable.

4. Final Adjustments

After trimming, smooth out the cover to eliminate any wrinkles or air pockets. Ensure that it lies flat on the water's surface and that the edges are properly aligned with the pool's perimeter.

5. Optional: Use a Reel for Convenience

For larger pools or frequent cover removal, a solar cover reel can be a valuable addition. It simplifies the process of rolling and unrolling the cover, reducing wear and tear and extending the cover's lifespan.


By following these steps, you'll have a well-fitted solar cover that enhances your pool's energy efficiency and maintains a comfortable water temperature. If you need assistance selecting the right cover or reel for your pool, feel free to contact our pool specialists.


Common Questions About Using a Solar Pool Cover

Can I use a solar cover on an above ground pool?

Absolutely. Just measure the widest points of your pool and trim the cover to size. Same rules apply: bubbles down.

Can I run my pool pump with the solar cover on?

Yes! Solar covers are lightweight and designed to float. They won’t interfere with filtration or water circulation.

Will a solar cover help with debris?

It can. While it’s not a full pool cover, a solar cover that overlaps slightly can help block out leaves and bugs.


Why Bubble Side Down Matters

The bubble side isn't just for show — it's the entire point. When solar cover bubbles face the water, the trapped heat gets transferred efficiently into your pool. This helps raise water temperature, reduce evaporation, and cut back on chemical use.

Searches like:

  • "bubbles up or down on solar cover"

  • "solar cover for pool bubbles up or down"

  • "do the bubbles go up or down on a solar cover"

All point to the same answer: bubbles go down.


Final Thoughts on How to Use a Solar Pool Cover

Using a solar cover doesn’t require fancy tools or expert-level skills. If you’re wondering how to use a solar pool cover, just remember these basics:

  • Unroll it bubble-side down

  • Let it sit in the sun before trimming

  • Trim it carefully to fit your pool

  • Use a reel for easier handling if needed

And you’re good to go!


Want One That Fits Just Right?

Check out our full line of solar pool covers — including round, oval, and rectangular options — and keep your water warmer, longer.



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