How to Install a Solar Pool Cover

On this page (10 sections)

1. What do you need before you install a solar pool cover?
2. How do you measure and trim the cover to fit?
3. Does the bubble side go up or down?
4. How do you put the cover on the pool?
5. When should you use a reel to install the cover?
6. How do you keep the cover in place and in good shape?
7. Which cover size and thickness suit your pool?
8. What mistakes should you avoid on installation day?
9. How do you know the cover is working?
10. Final word on how to install a solar pool cover

To install a solar pool cover, cut it to the pool's shape with a small overlap, lay it bubble side down on the water and smooth the edges flat. Most round pools take 15 to 30 minutes, and a reel makes covering the pool easier day to day.

The trick is matching the cover to how you use the pool. A cover that's cut too large catches wind, and one that's too small leaves open water where heat escapes.

Below is the full process, from measuring to trimming to storing it.

What do you need before you install a solar pool cover?

You need the cover, sharp scissors, a tape measure and a helper or a reel for larger pools. Have everything by the pool before you unroll anything.

Lay the cover out on a clean, flat surface first. That lets it relax after being folded in its packaging.

Check for wrinkles or creases and let it sit in the sun for a while so it lies flatter.

Measure the pool at its widest point in both directions. Write the numbers down rather than trusting memory.

For a round pool, measure straight across the center.

Plan a calm day for the install. Wind turns a light cover into a sail, and a cover that's flapping is hard to smooth onto the water.

How do you measure and trim the cover to fit?

Measure the water surface, not the pool deck, then cut with scissors a little at a time. For most pools you want the cover to sit inside the pool walls and float on the water.

Start with the cover a few inches larger than your measurement. Spread it over the pool and let it settle.

Then trim the excess in small passes, checking the fit as you go.

How to cut a round cover to size

Lay the cover over the water so the center sits in the middle of the pool. Pull the edges outward until it's even all around.

Mark the overlap at several points, then cut a smooth curve through the marks.

How to cut a cover for an irregular pool

Free-form pools need more care. Float the cover and press it gently against the pool edge to read the shape.

Cut in short sections and keep the scissors almost flat to the water.

Irregular shapes are the main reason buyers choose a cover with extra material. A 24 ft round cover can be trimmed down for a smaller or oddly shaped pool, so check the size you need against your widest measurement.

Does the bubble side go up or down?

The bubble side goes down, in the water. The air pockets face the pool surface, where they hold heat in and slow evaporation.

The smooth side faces the sky and collects sun.

This orientation matters more than most people expect. A cover flipped the wrong way still floats, but the insulation works against you rather than for you.

Check the cover before it goes in. Feel both sides and find the small bubbles.

On a cold morning the difference is easy to spot.

VINGLI says bubbles can look slightly deflated before the cover has been in the sun, which is normal. Once the cover warms up, the pockets plump out.

How do you put the cover on the pool?

Float the trimmed cover on the water, bubble side down, and pull it into place from the center outward. Let it settle before you straighten the edges.

Start by laying one edge on the water and letting the rest follow. On a round pool, work around the perimeter so the cover sits evenly.

Push air pockets out toward the edge as you go.

Smooth the cover with your hands or a soft brush. A flat cover absorbs more sun and loses less heat.

Ripples and folds create air gaps that cut into performance.

If the cover has straps or grommets, tie or hook them at the pool edge on windy sites. Otherwise, the water surface holds the cover in place on a calm day.

When should you use a reel to install the cover?

Use a reel when the cover is large or you cover the pool daily. Rolling the cover onto a reel keeps it off the ground and away from debris.

The VINGLI 18 ft Solar Cover Reel fits in-ground pools from 9 to 14 feet wide. Its frame is aluminum with stainless end legs, and the wheels are solid so it rolls around the deck.

The reel needs flat deck space beside the pool. Assemble it first, then attach the cover straps at several points.

The straps are long, so they reach across different cover widths.

Keep the reel out of direct sun when it's not in use. The care instructions suggest storing the cover and reel in a dry, shaded spot.

How do you keep the cover in place and in good shape?

Keep the cover flat on the water, rinse it now and then and store it shaded when it's off the pool. A cover left crumpled in the sun on the deck cracks and fades fast, so roll it or fold it loosely between uses.

The VEVOR cover is made from PE material that resists stretching and tearing, but the brand warns against highly acidic or heavily chlorinated water for long life.

Check the edges after windy days. A corner that's flipped over lets heat out and can tear on the coping.

Pull it back flat before the sun gets high.

Rinse off leaves and grit before you roll the cover up. Debris trapped in the folds scratches the surface and holds moisture against the plastic.

Which cover size and thickness suit your pool?

Match the cover to the pool's shape first, then pick the thickness for how you use the pool. A thicker cover holds heat longer but weighs more, so a reel matters more.

The VEVOR 18 ft Round 16 Mil Solar Cover fits 18-foot round pools. The 16 mil build is the heavier of the two round covers here, and VEVOR says it cuts evaporation by up to 95%.

The VINGLI 24 ft Round 12 Mil Solar Cover is the lighter option for a 24-foot round pool. The 12 mil material is easier to handle by hand and still floats bubble side down.

Both round covers can be trimmed for irregular shapes. If your pool is rectangular, start with the widest and longest measurements and cut the corners to match.

For more sizing help, see the best solar pool covers for inground pools.

Above-ground pools need the same bubble-side-down setup. The edge of the cover can tuck slightly over the top rail if the pool has a flat coping.

Compare options in the best solar covers for above ground pools.

What mistakes should you avoid on installation day?

Avoid cutting the cover too small, laying it bubbles up and leaving it bunched on the deck. Each one costs you heat or shortens the cover's life.

Don't trim against the pool wall while the cover is dry. The material shifts, and you end up with an uneven edge.

Float it first and cut to the water line.

Don't drag the cover over rough concrete or a sharp pool edge. Pull it by the edge or carry it in a roll.

Don't leave the cover on when the pool is being shocked or dosed heavily. The brand warns that strong chemicals shorten the life of the plastic.

Take it off, let the water settle, then put it back.

How do you know the cover is working?

A cover that's flat, bubble side down and correctly sized will show results in the first warm days. The water stays warmer overnight and the level drops more slowly.

Check it after a full day of sun. The top few inches of water should feel warmer than an uncovered pool at the same time.

Evaporation drops sharply, so you refill less often. Our guide to whether solar pool covers really work covers what to expect in more detail.

If the cover keeps drifting to one side, it's usually wind or an uneven fit. Trim the overlap and smooth the edges again.

A solar pool cover reel fixes the drift problem on larger pools by holding the cover straight on its roller.

Final word on how to install a solar pool cover

The install comes down to three things: measure the water surface, cut a little at a time and keep the bubbles facing the water. A flat, well-fitted cover is the whole job.

Pick the VEVOR 18 ft Round 16 Mil cover for a smaller round pool and the heavier feel. Pick the VINGLI 24 ft Round 12 Mil cover when a lighter cover is easier for you to handle.

Add the VINGLI 18 ft Solar Cover Reel if you cover the pool every day and want to skip the lifting.

Recheck the fit after the first week. A cover that settles into place may need one more small trim at the edges.

After that, the routine is simple: roll it back, rinse it off and keep it shaded when the pool is open.

Frequently asked questions

Should I cut a solar pool cover to fit?

Yes, trim it to the pool's shape. Leave a small overlap at the edges so the cover sits on the water and not against the walls.

Sharp scissors and a steady line are all you need, and the cover is easier to cut while it's spread out flat on the pool.

How much should a solar cover overlap the pool edge?

Aim for an inch or two beyond the water line on a free-form pool. On a rectangular pool, cut to the water edge so the cover floats flat.

Too much overhang can catch wind, and too little leaves gaps where heat escapes.

Can one person install a solar pool cover?

Yes, on a small round pool a single person can unroll a cover and pull it into place. Larger covers get heavy when wet, so a reel or a second pair of hands makes the job safer and faster.

How long does it take to install a solar pool cover?

Most installations take 15 to 30 minutes for a round pool. Measuring, trimming and smoothing the edges are the main steps.

A reel adds assembly time, but it saves minutes every time you cover or uncover the pool afterward.