A solar pool cover is a floating sheet of mil-thick polyethylene with air bubbles trapped inside that sits on an inground pool to block evaporation, trap heat from the sun, and hold warmth in overnight. It is the cheapest way to keep water warm, cut water loss, and lower chemical demand.
That single sentence answers the question most pool owners search for first, and the rest of this guide goes deeper. We compared twelve solar pool covers built for inground pools, checking thickness, construction, weight, fit and the durability complaints that show up after a season or two of real use. The best solar pool covers for inground pools all do the same three jobs: they slow evaporation, they let sunlight in during the day, and they slow heat loss at night.
The catch is that most covers are never used. Forum threads on r/swimmingpools and r/pools keep circling the same frustration: a cover that is too heavy to wrestle over the coping ends up folded in a garage by July. That is why reel hardware, mil thickness and actual handling weight matter more here than marketing claims about heat gain. If you also need something to keep the water itself clean, our picks for the [best robotic pool cleaners for inground pools](https://www.smashingrobotics.com/best-robotic-pool-cleaners-for-inground-pools/) pair well with any cover on this list.
Table of Contents
Top 3 Solar Pool Covers for Inground Pools in 2026
All 12 Solar Pool Covers for Inground Pools Compared (October 2026)
| Product | Specifications | Action |
|---|---|---|
| BigXwell Heavy-Duty 16 Mil 16×32 |
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| VEVOR 16 Mil 32×16 Blue and Black |
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 Sun2Solar Clear 16×24 16 Mil |
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 Blue Wave 12 Mil 16×32 Blue |
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 VEVOR 12 Mil 40×20 Blue |
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 VINGLI 12 Mil 18×36 Blue |
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| BigXwell 1200 Series 12 Mil 16×32 |
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 VINGLI 16 Mil 16×32 Blue |
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 Real Relax 16 Mil 16×32 |
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| VINGLI 12 Mil 12×24 Blue |
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| VEVOR 16 Mil 24×12 Blue |
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 In The Swim 8 Mil 20×40 Blue |
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1. BigXwell Heavy-Duty 16 Mil 16×32 Solar Cover – Best Overall
- 16 mil is sturdier than bubble-wrap style blankets
- Trims cleanly without fraying
- Holds temperature through cool nights
- Works inground or above ground
- Weight makes a reel near-essential on larger pools
- Some sizes arrive larger than ordered
- Stiff to maneuver in the water
This is the cover I keep coming back to. The BigXwell 16 mil sheet is a single piece of polyethylene with thousands of thermal bubbles, and at 4.5 stars across more than a thousand reviews it has the strongest combination of owner satisfaction and volume of evidence in this group. Reviewers repeatedly describe the material as noticeably thicker and sturdier than cheaper bubble-wrap style blankets, which is exactly the gap that shows up after one winter of use.
Heat performance is the reason people buy it. Owners report water that raises and holds temperature through cool nights, and the listed design claims evaporation reduction of up to 95 percent. That combination matters for an unheated inground pool, where there is no heater to fall back on and every degree has to come from the sun or be lost overnight.
Construction is plain and functional, which is a compliment. The sheet trims easily with heavy-duty scissors without tearing or fraying, so you can cut it to your exact pool dimensions rather than living with a rectangle that overhangs the deck. It is a floating design, so it needs no anchors or straps to hold its position, and it works on both inground and above-ground pools.
The one complaint that comes up repeatedly is weight. This is not a sheet one person pulls over the coping on a whim, and several owners say a roller system is basically required for a pool of this size. Owners also note that some sizes arrive slightly larger than the ordered dimensions and need cutting down before use. Plan ten minutes with heavy-duty scissors and a tape measure before the first swim.
Who this cover suits
This is the pick for a standard 16 by 32 inground rectangular pool owner who wants a single sheet that lasts and holds heat, and who is willing to pair it with a reel so it actually gets used every day. If your pool is unheated and you are chasing a longer season rather than supplementing a heater, the 16 mil build is the right weight of material.
It also suits anyone who likes the trim-to-fit model. Buy a sheet that covers the pool with a little overlap, cut it to the real dimensions on the deck, and it lies flat instead of bunching at the edges.
Where it falls short
The stiffness is real. On a smaller pool with a tight deck path, maneuvering a thick sheet by hand gets old fast, and reviewers mention it specifically. If your pool is under about 12 by 24 and you expect to cover it alone several times a week, a lighter 12 mil option or a small reel will save you a lot of annoyance.
Buyers who want a clear sheet to heat water faster during the day should look at the Sun2Solar clear cover instead. This one prioritizes overnight retention and durability over maximum daytime transmission.
2. VEVOR 16 Mil 32×16 Blue and Black Solar Cover – Top Rated
- Stays put in storms
- About 5 degrees more retained heat
- Single center seam resists tearing
- Cuts easily to the perimeter
- Weight can exceed an entry-level reel
- Bulky off-season storage
- Slit cuts needed for ladders and stairs
This VEVOR sheet is frequently described in reviews as the thickest or best solar cover the buyer has owned, and the numbers back up the feel. At 16 mil and 37.7 pounds for a 32 by 16 rectangle, it is a genuinely heavy piece of material, and owners say it holds heat better than lighter blankets by roughly 5 degrees.
The dual air-layer micro bubble design is the part I would call out. Instead of one layer of bubbles, this cover has a second air layer, which is what the reviewers credit for better heat storage. Listed evaporation reduction runs up to 95 percent, so it does the evaporation job as well as anything else here.
Two construction details set it apart. First, it has only a single center seam, and owners cite that as less likely to tear than multi-panel covers where seams run the other way. Second, the weight gives it genuine wind resistance. Reviewers report it stays put and holds together in storms, which is one of the most common complaints about thinner covers on open decks.
Cutting is straightforward, and it trims to the pool perimeter. The listed care instruction is a hand wash only, which fits the low-effort cleaning most owners do before folding it away.
Who this cover suits
This suits owners of open, exposed decks in windy regions who have had covers blow off before, and anyone who wants strong heat retention on a thick sheet. If your pool sits with no fence or windbreak, the weight that makes it a pain to handle is also what keeps it on the water.
It is also a good match for a pool that also runs a heater. A cover this thick slows overnight loss, which means less heater run time, and that stacks with the daytime solar gain.
Where it falls short
Weight is the whole trade-off. Reviewers warn that this weight can exceed the capacity of an entry-level reel, so budget for a heavy-duty roller rather than the cheapest one available. Large sizes are also bulky to store off-season, which matters in a garage with limited floor space.
Two smaller annoyances come up: you need slit cuts around pool ladders and stairs if you use a reel, and pulling the flat bubble design off a reel carelessly can tear it. A little care at the roller keeps the material intact season after season.
3. Sun2Solar Clear 16×24 16 Mil Solar Cover – Best for Clear Daytime Heating
Sun2Solar Clear 16 ft x 24 ft Rectangle Pool Solar Cover | 16 Mil
- Clear film transmits strong sunlight
- Up to 15 degrees of daytime gain
- Extra overlap fits around protrusions
- Blocks leaves and debris
- Hard to see when floating on the water
- Some reports of bubble degradation over time
- Lower rating than blue heavy-duty covers
If your priority is daytime heating rather than overnight retention, clear is the material you want. The Sun2Solar 1600 Series is a clear 16 mil resin sheet with grommets, and its listed claim is a water temperature increase of up to 15 degrees through solar absorption. That is the highest stated daytime gain figure among the twelve covers in this guide.
The clear film also cuts evaporation up to 95 percent and reduces chemical use, so it does not trade one job for another. Reviewers praise the material for transmitting real sunlight into the water, which is the whole mechanism behind daytime heating on an unheated inground pool.
Fit is handled with an extra-overlap design, and the extra material is what lets you trim around pool ladders, walls and other protrusions rather than leaving a gap. The listed size is 16 by 24 feet, or 384 square feet, which suits a mid-size rectangular inground pool or an above-ground frame set of the same footprint.
It also does a decent job as a debris barrier. Reviewers note it blocks leaves well, which cuts down vacuuming time on a pool you are trying to keep warm rather than swimming in every day.
Who this cover suits
This suits owners in warm, sunny climates who put the cover on during the day to gather heat and take it off in the evening to swim. Clear film is the right call when the sun is your only heat source and the daytime hours are when you want the water warming.
It also suits anyone who wants one cover to handle two jobs, since owners report meaningful evaporation and chemical reduction alongside the heating. If you already run a heat pump, the clear sheet lets that heater work less during sunny afternoons.
Where it falls short
Visibility is the first thing to know. Clear material is nearly invisible when it floats, and reviewers specifically warn that owners can forget it is in the water before jumping in. If you have kids or guests who do not check, that is a real safety habit to build.
Durability reports are mixed. A portion of reviews describe bubble degradation over time, and the 4.0 average rating sits below the heavier blue covers here, which suggests thinner long-term material. If you want a sheet that stays intact for many seasons, the blue 16 mil options are a safer bet.
4. Blue Wave 12 Mil 16×32 Blue Solar Pool Cover – Best Value
- Largest review base in this group
- Cuts to kidney and irregular shapes
- Blocks leaves
- insects and wildlife
- 5 year prorated warranty
- Bubbles can shed plastic discs into the filter
- Seamed panels seen as a weak point
- Blows off in thunderstorm winds without straps
With more than 2500 reviews, the Blue Wave 12 mil is the most thoroughly owner-tested cover on this list, and for a lot of inground pool owners that volume of long-term reports is worth more than a thinner spec sheet. At 27 pounds for a 16 by 32 rectangle, it is also lighter than most of the 16 mil sheets here, which makes daily handling far less of a chore.
The build is 12 mil construction with thousands of downward-facing air bubbles, and the blue coloring is credited with aiding overnight heat retention. Reviewers report adding 5 to 15 degrees of water temperature in sunny conditions, and noticeably less need to top up the water week to week. The brand states a 5 year prorated limited manufacturer warranty, the longest stated warranty in this group.
What owners consistently like is the debris and wildlife exclusion. Reviews mention leaves, insects, and even ducks and turtles being kept out, which matters if you are not swimming in the pool every day. It trims easily to kidney-shaped and other irregular pools, so it is not limited to rectangles.
It is also listed as machine washable, which is unusual for this category and makes spring cleanup easier.
Who this cover suits
This is the pick for someone who wants a long, proven service life at a moderate thickness, on a pool with irregular shape or stairs. The lighter 27 pound sheet is much easier to pull on and off alone than a 16 mil blanket, so it is far more likely to become a daily habit rather than a garage item.
It also suits owners who are away often and want a barrier against debris and animals rather than active temperature control. A vacuum-friendly clean floor and less wildlife intrusion is a quieter but real benefit.
Where it falls short
Two failure modes show up in reviews. Bubbles can degrade and shed small plastic discs into the pool, which can reach and clog your filter, so plan on skimming them. And the seamed panel construction is seen by some owners as a weak point next to single-piece covers.
Wind is the third issue. Reviewers describe it as flimsy enough to blow off the pool in strong thunderstorm winds without straps, so if your deck is exposed, budget for a strap or cable kit. Buyers wanting one thick sheet that stays put in a storm should look at a heavier 16 mil option instead.
5. VEVOR 12 Mil 40×20 Blue Solar Blanket – Best for Large Rectangular Pools
VEVOR Solar Pool Cover 40 x 20 ft, 12 Mil Rectangle Solar Blanket Blue
- One piece covers a full size inground pool
- Good tensile and tear resistance
- Keeps leaves and dust out
- Trims cleanly to any shape
- Thinner than the 16 mil VEVOR covers
- Very heavy at 44.3 pounds
- Large folded size is hard to store
A 20 by 40 pool needs a cover that spans the whole water in one piece, and that is exactly what this VEVOR sheet is built for. The 40 by 20 rectangle in 12 mil polyethylene carries a stated heat gain of 8 to 15 degrees depending on conditions, and prevents up to 95 percent of water evaporation.
Reviewers single out tensile and tear resistance, with reports of minimal fading or warping after extended sun exposure. That matters on a big sheet sitting in direct sun for hours every afternoon, which is the standard working conditions for an inground cover in summer.
It is a closed bubble design and cuts cleanly to any pool shape, including commercial spas, so it is not limited to a perfect rectangle. Reviewers also note it does a good job of keeping leaves and dust out, which lowers cleaning time on a large water surface.
One detail worth knowing before you order: the manufacturer recommends chlorine levels below 2.5 ppm and pH above 7.2. That is a sensible rule for any polyethylene bubble cover, since prolonged high chlorine concentration is what eats the bubbles.
Who this cover suits
This suits owners of full-size 20 by 40 inground pools who want one continuous sheet rather than a patchwork of smaller covers. It is a sensible middle ground on thickness, lighter per square foot than a 16 mil blanket, while still giving you tear resistance and heat gain that reviewers rate above generic pool store blankets.
It also suits anyone whose pool shape is not a clean rectangle, because the sheet trims to fit obstacles and the pool outline once it is on the deck.
Where it falls short
At 44.3 pounds, this is a heavy sheet, and reviewers are clear that it needs a properly rated reel rather than an entry-level roller. Hand-carrying a cover this size across a deck is not realistic for most people, so the reel is not optional.
Storage is the other practical issue. The large folded size is genuinely difficult to keep indoors between seasons, so plan a dry storage spot with real floor or shelf space. Buyers who want a longer service life than 12 mil offers should step up to a 16 mil sheet at this size.
6. VINGLI 12 Mil 18×36 Blue Solar Pool Cover – Best for Wide Decks
- Welded seams improve tear resistance
- Arrives with extra material for trimming
- Easy to cut around stairs
- Reduces chlorine generator run time
- Thinner than premium 16 mil covers
- Extra material must be trimmed or it bunches
- Heavy enough to want two people
The 18 by 36 format is the awkward middle size that many inground pools actually are, and it is one of the few in this guide that arrives with extra material built in for trimming. The VINGLI 12 mil sheet includes 2 inches of extra material, so you can cut it to the true pool dimensions instead of guessing.
Reviewers like the welded seams specifically, describing the build as heavy duty with strong seams for tear resistance. That is a meaningful upgrade over covers that fail along a factory seam after a season of folding. It also blocks leaves and debris and cuts chlorine generator run time, which owners with chlorinator systems appreciate.
Heat performance comes from the translucent blue color, which absorbs daytime heat and releases it into the pool. The cover is designed to pair with a VINGLI pool cover reel, and the construction is straightforward polyethylene with thousands of thermal bubbles laid bubble side down.
Cutting is easy to any shape, including stairs and irregular layouts, which is the single most common request in pool owner threads about sizing. Trimming around a stair well is straightforward with this sheet because the extra material gives you the overlap you need.
Who this cover suits
This suits owners of an 18 by 36 inground pool, or anyone whose deck layout is wide enough that a narrower sheet leaves half the water bare. It is also a strong option if you have stairs or a complex outline, since the cut-to-fit approach handles those without wasting material.
Owners who want to cut down chlorinator run time will like the debris barrier, and the blue tint is a sensible choice for anyone more interested in holding warmth overnight than in maximum daytime transmission.
Where it falls short
At 12 mil, some owners report premature deterioration, so expect a shorter service life than a 16 mil sheet. Treat it as a two-season purchase rather than a permanent one and it will not disappoint you.
You must trim the extra 2 inches. Owners who skip that step report the cover sitting folded on the surface instead of lying flat, which wastes the overlap you paid for and creates a ridge that catches wind. At 19.87 kg it is also heavy enough that two people are preferable on the larger sizes.
7. BigXwell 1200 Series 12 Mil 16×32 Solar Pool Cover – Best for Easy Trimming
BigXwell Solar Pool Cover, 12Mil 16×32 Foot Rectangle for Above-Ground and In-Ground Pools, 1200Series (16×32 FT)
- Heavier than a typical budget blanket
- Can be molded to the edge by warming in the sun
- Raises and holds water temperature
- Reduces evaporation and debris
- Thinner than the 16 mil BigXwell model
- Large sizes benefit from a reel
This is the more economical sibling of the BigXwell 16 mil cover, and it holds a 4.4 rating across its reviews. At 12 mil it is still noticeably heavier and better made than the bargain bubble-wrap blankets that fill the bottom of the category, which is the main thing that separates it from the cheapest options.
The 1200 Series uses thousands of thermal bubbles to trap solar heat during the day and hold temperature on cloudy days and chilly nights. Listed evaporation reduction is 95 percent, the same figure as the brand’s thicker model, so the heat and water-saving jobs are not compromised.
Handling is the standout. Owners report that the cover trims easily and can even be molded to the pool edge by warming it in the sun, which is a small trick that makes a big difference on a tight deck. It works with both above-ground and in-ground installations, so it is not fussy about your pool type.
Reviewers consistently report raised water temperature that holds through cold nights, plus reduced evaporation, lower chemical use, and less debris entry.
Who this cover suits
This suits a 16 by 32 rectangular pool owner who finds the 16 mil versions too heavy to handle but still wants real material rather than the thinnest sheet available. It is the version to buy if you want to cover the pool several times a week without recruiting help.
It also suits anyone who plans to trim the cover to an unusual shape. The easy-cut behavior and the ability to warm and mold the material make fitting it around stairs or a curved wall much less of a project.
Where it falls short
The main limitation is longevity. It is a step down from the brand’s own 16 mil model in long-term durability, so if you expect five-plus seasons of service, budget for the thicker sheet. The 4.4 rating comes from a smaller pool of reviews than some competitors here, so treat the durability feedback as thinner evidence.
On the largest sizes, owners still recommend a reel rather than dragging the sheet across the deck, because dragging is how wrinkles form and wrinkles are where tears start.
8. VINGLI 16 Mil 16×32 Blue Solar Pool Cover – Best for Windy Locations
- Heavy 16 mil ply holds position in wind
- Loses only a few degrees overnight
- Seams and material described as rugged
- Cuts cleanly and stays flat once trimmed
- Arrives with extra material that must be trimmed
- Untrimmed edges can lift in wind
- Bulky to roll and store by hand
This VINGLI 16 mil sheet is one of the better-reviewed covers in the group, with a 4.5 rating and very consistent owner feedback. The standout trait is wind stability: owners describe the 16 mil ply as noticeably heavy and report that it holds its position in wind rather than skating across the water or riding up an edge.
Heat retention is strong as well. Reviewers report losing only a few degrees overnight after cold temperatures, which is exactly the measurement that matters for an unheated pool in a climate with cool nights. The build is 16 mil polyethylene with thousands of thermal bubbles laid bubble side down and strong welded seams for a long service life.
Fit is the one task you must do properly. The cover arrives with extra material for trimming to the pool shape, and once it is cut accurately it stays flat on the water. Owners describe the seams and material as rugged and well made, and cutting is reported as clean.
The care instructions are unusually specific for this category: wash and dry before storing, keep the cover away from pool chemicals for at least 24 hours, roll it after use, and store it in a dry place. Following that sequence is the simplest way to get the stated seam life out of the material.
Who this cover suits
This suits owners of open decks in breezy or gusty locations who have had lighter covers lift or blow. The weight of the 16 mil ply is the feature here, not a drawback, because it is what keeps the sheet planted on the water during afternoon wind.
It is also a good match for anyone prioritizing overnight retention over daytime transmission, since owners report only a few degrees of overnight loss. That makes it a strong pairing with a heater that runs at night.
Where it falls short
Trimming is not optional. Owners note that if you leave the extra material in place, the excess bunches on the surface and oversized untrimmed edges can lift in windy conditions, which defeats the wind stability you paid for. Measure twice, cut once.
It is also bulky to roll and store by hand on the larger sizes, and the review base is smaller than the top sellers here, so the multi-year durability picture is less well documented. Owners who want the same thickness with a much larger body of owner feedback can look at the VEVOR 16 mil sheet.
9. Real Relax 16 Mil 16×32 Solar Pool Cover – Best for UV and Dust Protection
Real Relax 16 mil Solar Pool Cover, 16 x 32 ft Rectangle Bubble Blanket
- 4.7 star average across its reviews
- 81 percent of reviews are 5 star
- 16 mil PE described as tear resistant
- Easy to trim to standard inground sizes
- Smaller review base than the big sellers
- 39 pounds needs a reel or two people
The Real Relax 16 mil blanket carries the highest average rating of any cover we evaluated, at 4.7 out of 5, with 81 percent of its reviews at five stars. That is a real signal of consistent satisfaction, though it comes from a smaller number of reviews than the category leaders, so read it as strong recent performance rather than a decade of data.
Construction is 16 mil high-quality polyethylene with the bubble side down for heat transfer, and it is listed as dustproof, tear resistant and UV resistant alongside thermal insulation. The UV rating is the differentiator here, since the fastest way a solar cover fails is sunlight-driven embrittlement over consecutive summers.
Evaporation reduction is listed at up to 95 percent, and the sheet is designed to absorb solar heat during the day while reducing nighttime heat loss, which lowers pool heating costs by using free solar energy. It also blocks debris and leaves from entering the water, so it does a little of the debris work too.
At 39 pounds for a 16 by 32 rectangle, this is one of the heavier sheets in the group. It trims to any pool shape with scissors, and owners report that it fits common inground rectangular pool sizes without fuss.
Who this cover suits
This suits owners in high-UV regions, or anyone whose previous covers turned brittle and cracked after a couple of seasons. If you have replaced a cover that crumbled when you folded it, the listed UV resistance is the feature to buy on.
It also suits a standard 16 by 32 rectangular inground pool, one of the most common residential sizes. The 16 mil build gives you good overnight retention and the tear resistance to survive folding and unfolding across seasons.
Where it falls short
The honest limitation is the review base. At 129 reviews, there is simply less long-term durability evidence than the covers with thousands of reviews, and a 4.7 average can drift as more owners report in. If multi-year data matters most to you, the BigXwell 16 mil sheet carries a much larger evidence base at a similar thickness.
At 39 pounds, it needs a reel or a second person to handle comfortably. Do not plan to pull this one over the coping by yourself several times a week.
10. VINGLI 12 Mil 12×24 Blue Solar Pool Cover – Budget Pick
- Noticeably thicker than bargain bubble-wrap covers
- Dark blue color heats water faster
- Edges cut square for accurate trimming
- Blocks leaves and debris
- 12 mil can deteriorate within a few seasons
- One owner reports breakdown within months
- Remove periodically so chemicals do not eat the bubbles
The 12 by 24 VINGLI is the sensible entry point for a smaller inground pool, an above-ground set, or a spa, and reviewers consistently rate it as better quality and better value than pool store equivalents at the same class. At 12 mil it is still noticeably thicker than the bargain bubble-wrap blankets, which is where most of the low-end category lives.
Heat performance is good for the thickness. The dark blue thermal bubbles absorb daytime heat and release it into the pool, and owners report faster water heating along with sharply reduced chemical usage. It also minimizes evaporation, conserves water, and keeps leaves and debris out of the pool.
The detail that earns its keep is the straight-cut edges. With the bubbles as a guide, trimming to size is accurate and easy, which sounds minor until you have tried to cut a cover with a ragged edge and ended up with a flap that catches wind. The build also uses heavy-duty material with strong welded seams.
It is designed to work with a VINGLI pool cover reel, so if you already have that hardware, this sheet drops right into the setup.
Who this cover suits
This suits owners of a smaller pool, an above-ground frame set, or a hot tub who want a real solar cover rather than a throwaway sheet. It is also a good fit for a second cover, since a compact sheet is easy to deploy on hot afternoons when the big blanket is a chore.
Buyers who want predictable sizing will like the square edges. Accurate trimming matters most on smaller pools where a few inches of overhang is a larger share of the water surface.
Where it falls short
Durability is the honest limit. Reviewers warn that 12 mil material can deteriorate within a few seasons in intense sun, and one owner reports material falling apart within months despite careful storage. Buyers planning to keep a cover for many summers should move up a thickness tier.
There is also a chemical exposure rule. Take the cover off periodically so pool chemicals do not dissolve the bubbles, and never leave it on while the water is being shocked. That habit matters more on a thin sheet with less material to absorb the damage.
11. VEVOR 16 Mil 24×12 Blue Solar Pool Cover – Best for Spas and Small Pools
VEVOR Solar Pool Cover, 24 x 12 ft Rectangle Solar Cover 16 mil for Pools, Inground Above Ground Swimming Pool Solar Blanket with Bubble, Heat Retaining Solar Covers Blue
- 16 mil thickness at a lower entry point
- Keeps leaves and dust out
- Good wind resistance from its weight
- Can increase water temperature by 8-15 degrees
- 24x12 suits compact pools and spas
- Can tear if dragged over coping
- Slit cuts needed to fit ladder rails
Getting 16 mil material in a compact size is the whole point of this VEVOR sheet, and reviewers repeatedly describe it as thicker and sturdier than cheaper blankets at a comparable entry point. For a spa, hot tub, or a small rectangular pool, 16 mil would normally be out of reach at this size.
The listed performance is an 8 to 15 degree water temperature increase depending on conditions, plus up to 95 percent evaporation prevention. Owners note better heat retention and noticeably cleaner water, since the sheet keeps leaves and dust out.
Durability details are solid for the class: high tensile and tear resistance, with resistance to fading and warping in the sun. The film is 16 mil polyethylene with thousands of micro bubbles, and it cuts easily to fit within the pool edge or a commercial spa shape.
At 21.3 pounds, it is one of the lighter 16 mil options in this guide, which matters for a small pool with tight deck access. The weight also gives it better wind resistance than thinner sheets, according to owners.
Who this cover suits
This suits spa and hot tub owners, and anyone with a compact pool or an above-ground set that cannot use a full-size sheet. Spas lose heat quickly because of their high surface-area-to-volume ratio, so a cover that reduces evaporation by up to 95 percent makes a larger difference there than on a deep rectangular pool.
It is also the pick if you want 16 mil durability but do not want a reel. At 21.3 pounds, one person can still manage it on and off in a way that is not true of the 37 to 44 pound sheets.
Where it falls short
Size is the obvious limit. A 24 by 12 sheet suits compact pools and spas more than a full-size inground pool, so if you have a standard 16 by 32, this will not do the job and you need to move up a size.
Handling still needs care. Owners report it can tear if dragged over the pool coping when getting it on and off, so lift rather than pull, and plan slit cuts if you need to fit around ladder rails.
12. In The Swim 8 Mil 20×40 Standard Blue Solar Pool Cover – Best for 20 by 40 Pools on a Budget
In The Swim 20′ x 40′ Standard Blue Rectangle Solar Pool Cover 8 Mil
- 20x40 matches the most common inground size
- Lightest build for easy daily folding
- Trim to fit fits steps and ladders
- Blocks debris and cuts evaporation
- Thinnest option here and least UV durable
- Thin material blows off in wind without straps
- Above-average share of 1 star reviews
The 8 mil Standard series from In The Swim is the lightest construction in this group, and that is the entire appeal. At 8 mil, the sheet folds and handles easily enough that a single owner can put it on after a swim and pull it off the next morning without a reel. For large pools where a 12 or 16 mil sheet is genuinely unmanageable alone, that changes whether the cover gets used at all.
The size is the other draw. Reviewers describe the 20 by 40 rectangle as matching the most common inground pool dimensions, and the cut-to-fit design accommodates steps, ladders, and irregular contours. It blocks debris and reduces evaporation and chemical consumption while solar warming works to extend the season.
The stated warranty is 3 years, and the brand also sells Premium and Ultra grades in the same family of sizes. That matters if you are unsure about 8 mil, because you can move up the thickness ladder without changing the size.
The manufacturer care instructions are the most thorough we saw in this category, and they matter for a thin sheet: put the blanket away when shocking, only place it on when chlorine is below 2.5 ppm and pH is above 7.2, remove sticks and leaves gently, and store it rolled or folded out of the sun to prevent damage.
Who this cover suits
This suits a 20 by 40 inground pool owner who wants full-pool coverage but will not use a reel and does not want a 44 pound sheet. It is also a sensible first cover for someone who has never owned one, because there is no learning curve and no risk of damage from dragging a heavy sheet over the coping.
Owners who want seasonal function rather than a multi-year investment fit this too. If you cover the pool on weekends and in shoulder season, a light sheet used gently can outlast a thick one that sits folded and bakes in the sun all summer.
Where it falls short
8 mil is the thinnest option here, which makes it the least durable and most prone to UV breakdown. The 4.0 rating with an above-average share of one star reviews points to faster-than-expected wear for some owners. Thin material can also be blown off the pool in wind without straps.
At 41 pounds the sheet is not light in absolute terms, so the handling advantage comes from the thinner material flexing rather than from low weight. If your pool sees heavy leaf drop or you want the cover to last several summers, step up to 12 or 16 mil instead.
How We Evaluated These Solar Pool Covers
We looked at every cover in this group on the same five criteria, using the manufacturer specifications alongside what owners actually report after using them. Consistency matters more than volume here, because the differences between an 8 mil and a 16 mil sheet only show up after real weather and real folding.
Thickness and material: we recorded the stated mil rating, the material type, and the bubble construction, because those three numbers set the ceiling on both heat retention and service life. Handling weight and size: we noted the listed weight and dimensions, since a cover nobody can get on and off is worthless. Fit: we checked whether the sheet is trim-to-fit, whether it arrives with extra material, and how it behaves around stairs, ladders, and irregular shapes. Owner-reported performance: we read the recurring themes in reviews, including heat retention, evaporation, wind behavior, and durability after a season or more. Failure reporting: we specifically tracked the complaints that show up later, such as shedding bubbles, seam breakdown, UV embrittlement, and blown-off covers.
We did not measure water temperature ourselves. Every temperature figure in this guide comes from the manufacturer or from owner reports, and we have labeled which is which so you can weigh them accordingly. Pricing changes constantly, so we have left it out of the comparisons entirely and left the checking to the buttons.
How to Choose the Right Solar Cover for Your Inground Pool
Start with the size of the job, not the size of the sheet. A 16 mil cover is the better material, but if you cannot get it on and off by yourself, a 12 mil cover you use daily beats a 16 mil cover that lives folded on a shelf. Most abandoned covers in owner threads failed on handling, not on durability.
Next, decide between daytime heating and overnight retention, because the materials are optimized differently. Clear film transmits the most sunlight and gives the biggest daytime gain. Blue and tinted covers absorb more, hold warmth better overnight, and tend to last longer in strong sun. If your pool has no heater, blue is the safer default. If you cover during the day and swim in the evening, clear earns its place.
Then match the sheet to the pool shape and its stairs, because trim-to-fit is the normal method of installation. Inground pools with stairs, ladders, walls, or a raised sun shelf need enough overlap to cut around those obstacles. Pool owners in forum threads consistently report that nominal pool dimensions do not match real deck measurements, so measure the water rather than the label.
Finally, plan the hardware before you order. Anything in the 16 mil range and anything over 30 pounds per sheet wants a properly rated cover reel, matched to the pool length. Our picks for the [best robotic pool cleaners](https://www.smashingrobotics.com/best-robotic-pool-cleaners/) handle debris, but a cover that lets more debris in raises the cleaning load rather than lowering it. If your pool is above ground instead, our [above-ground robotic pool cleaner roundup](https://www.smashingrobotics.com/best-robotic-pool-cleaners-for-above-ground-pools/) covers that setup.
How to Size a Solar Cover for an Inground Pool With Stairs
Measure the water, not the pool brand’s nominal size. Most nominal inground dimensions are approximate, and stairs and ledges eat into the open water area in ways the label never mentions. This is the step that most sizing complaints in owner threads trace back to.
Measure the length and width of the water at the longest and widest points, following the curve of a freeform or kidney shape rather than taking a straight line across. Then add overlap at the edges. A cover that ends exactly at the coping leaves a gap that leaks water and lets wind catch an edge, so aim for enough extra material to sit over the coping on every side.
Account for the stairs deliberately. The cover should extend over the stair well, because a large part of a heated inground pool’s heat loss happens at the steps where the water is shallow and the surface area per volume is highest. Reviewers and pool professionals both treat covering the stairs as worthwhile rather than optional, so cut a shape that follows the stair outline instead of leaving the steps bare.
Allow extra material for ladders and rails. If your cover runs under a ladder, make two straight slit cuts so the rails pass through, and the sheet lies flat rather than tenting upward. Several covers in this guide are sold with 2 inches of extra material built in specifically for this trimming.
Cut on a clean flat surface with heavy-duty scissors, not a knife, and warm the sheet in the sun first if it is stiff. Leave the trimmed edge flat rather than folded on the water, since a ridge catches wind and lifts the cover. Finally, confirm your reel capacity matches the finished size and thickness, which is the step most people skip and most regret.
Clear vs Blue Solar Covers: Which One Heats Your Pool
Clear covers heat water faster during the day because the film transmits sunlight straight through to the surface. The Sun2Solar clear 16 mil sheet in this group carries the largest stated daytime gain, up to 15 degrees, because that transmission is the entire mechanism. The trade-off is visibility and long-term UV durability, since a clear film shows every pinhole and cracks under sustained sun sooner.
Blue and tinted covers absorb rather than transmit. Reviewers report clearer overnight retention with blue, which is why most people choose it for an unheated pool that has to hold warmth through cool nights. The color also hides debris and algae staining, and the pigment acts as a UV blocker, which is why blue tends to outlast clear in full-sun climates.
The forum consensus that thicker covers let less solar heat in but hold an already-warm pool better is the useful framing. Think of clear as a daytime heater and blue as an overnight blanket. Many owners run one during the day and the other at night, and if your budget only stretches to one sheet, blue is the more forgiving choice for year-round use.
Silver and reflective covers sit in a different category, aimed at cooling water in hot climates rather than heating it. They are not a substitute for a bubble blanket in a cold region, and none of the twelve covers here are silver, because the inground heating use case dominates.
What Mil Thickness Do You Need?
Mil is simply a thickness measurement, one thousandth of an inch, and higher mil means thicker and more durable material. For most inground pools, 12 mil is the practical default and 16 mil is the durable choice. 8 mil covers are for owners who want light daily handling over long service life.
8 mil is the lightest and easiest to fold, and it suits small pools, above-ground sets, and anyone covering without a reel. It is the least UV durable option and the one most likely to be replaced after a couple of seasons.
12 mil is the balance point. It is noticeably heavier and more tear resistant than bargain bubble wrap, still light enough for one person to handle, and it is the thickness most of the value picks in this guide use. For a standard 16 by 32 inground pool, this is the number we would default to.
16 mil is the durability tier. It holds heat better, resists tearing and wind, and sheds fewer bubble fragments into the water, at the cost of real weight that makes a reel worth buying. Choose 16 mil for large pools, exposed decks, and long service life.
Above 16 mil, the weight becomes the limiting factor rather than the benefit. Once a cover is heavy enough that you need a properly rated reel and a second person, the handling burden starts to outweigh the extra insulation, which is why most of the covers in this guide stop at 16 mil.
Solar Cover Reels and Hardware That Fit Thick Covers
A reel is the accessory that turns a cover from a chore into a habit. Forum owners describe it as the single thing that makes a cover usable daily, and it is the most common accessory question we saw after sizing. If you are buying 12 mil or thicker, budget for the reel at the same time rather than later.
Match capacity to both size and thickness. Entry-level rollers are fine for a 12 mil sheet on a small pool, but reviewers warn that the weight of a 16 mil sheet can exceed what an entry-level reel handles. Heavier covers, including the 44.3 pound VEVOR 40 by 20, need a properly rated heavy-duty roller.
Plan the mounting position before the cover arrives. A solar roller is usually fitted to the poolside deck or mounted on the coping so the cover winds up onto a roller at the shallow end. Measure the distance from the roller to the deep end and add slack, because a roller mounted too close will not pull the far edge fully onto the drum.
Anchoring matters more than people expect. Straps, cables, and springs around the deck are what stop a cover lifting in wind, and several covers in this group are specifically described as needing straps to stay on in thunderstorms. Pool store professionals report that Odyssey-brand reel kits hold up well, which is worth knowing if you want a known hardware pairing.
Add a storage bag or a fitted cover sock for winter. A rolled solar cover left in the sun degrades, and several manufacturer care instructions in this guide say the same thing: roll it up, keep it dry, and store it shaded or indoors. Our reviews of [robotic pool cleaners for inground pools](https://www.smashingrobotics.com/best-robotic-pool-cleaners-for-inground-pools/) cover the other half of seasonal equipment storage if you are organizing the whole garage at once.
Care, Maintenance, and Storage for Solar Pool Covers
Take the cover off before you shock, and leave it off for 8 to 12 hours afterward. Chlorine concentration is the fastest way to destroy polyethylene bubbles, and the manufacturer instructions in this group all follow the same rule: keep the cover off the water when chlorine is above 2.5 ppm and pH is below 7.2, and do not put it back until the water is back in range.
Rinse and dry before every storage. Leaf debris and residual chlorine trapped in a folded sheet attack the material from the inside. A quick hose-down and a full dry in the sun takes minutes and is the difference between a sheet that lasts several seasons and one that turns to flakes.
Never store a cover in direct sun. Folded or rolled and left out, the trapped heat and UV attack the bubbles faster than pool use does. Store it rolled around a core if you can, in a dry shaded spot, ideally indoors between seasons.
Keep it off sharp coping when pulling it on. Several reviews across this group mention tears caused by dragging a cover over the pool edge, and that is entirely avoidable by lifting rather than dragging, especially with a reel where the tension multiplies the load.
Skim the pool surface often. The same cover that keeps leaves out will slowly collect a fine layer of pollen and shed bubble fragments, so a quick skimmer pass every few days keeps your filter working and your water clear.
Frequently Asked Questions
Do solar pool covers actually work?
Yes. A floating bubble cover blocks wind-driven evaporation, which is the main way pools lose heat and water, and it lets sunlight through during the day to warm the surface. Most covers in this group are listed at up to 95 percent evaporation reduction, and owner reports commonly cite daytime gains of 5 to 15 degrees. Overnight heat loss drops sharply once the cover is on.
What thickness pool solar cover is best?
For most inground pools, 12 mil is the practical default because it is durable enough to last while still light enough for one person to handle daily. Step up to 16 mil for large pools, exposed decks, or longer service life, and expect to add a cover reel at that weight. Choose 8 mil only if easy folding matters more than longevity.
Should a solar cover cover the stairs of an inground pool?
Yes, cover the stairs. Shallow water at the steps has far more surface area per volume than the deep end, so it loses heat faster. Trim the cover to follow the stair outline so the sheet lies flat across the steps, and keep the overlap at the coping wide enough that no open water is left uncovered along the edges.
Will a pool warm up faster with a solar cover on or off?
A pool warms faster on a sunny day with the cover on, because clear film transmits sunlight straight into the water and blue film absorbs it. The trade-off is that the cover slows daytime heating slightly if the water is already warm and the air is hotter, so many owners cover during the day to gather heat and remove it in the evening to swim.
How long do solar pool covers last?
Expect roughly two to three seasons from a 12 mil sheet, and three or more from 16 mil material when it is stored out of the sun and rinsed after use. The fastest causes of failure are UV embrittlement, prolonged chlorine contact, and folding while wet. Several covers in this group are rated at 4.0 stars or higher with review counts above 1000, so there is real long-term owner data behind these thicknesses.
Can you leave a solar cover on overnight?
Yes, leaving the cover on overnight is the main reason it works, because the trapped air layer slows heat loss after sunset. The one exception is right after shocking: remove the cover, keep chlorine below 2.5 ppm and pH above 7.2, and wait before putting it back, because concentrated chlorine destroys the bubbles.
Bottom Line: Where to Start With Solar Pool Covers in 2026
Start with the BigXwell Heavy-Duty 16 Mil 16×32 cover if you have a standard 16 by 32 inground pool and want the strongest combination of owner satisfaction and evidence. It rates 4.5 stars across more than a thousand reviews, cuts cleanly to your dimensions, and holds temperature through cool nights. Add a properly rated reel and the weight problem disappears.
If you want a thick sheet that holds onto heat on an exposed deck, the VEVOR 16 Mil 32×16 cover is the pick, with a dual air layer and a single center seam that owners credit for wind resistance and tear resistance. If handling alone is the problem, the Blue Wave 12 Mil cover is the better buy, since it folds easily enough to become a daily habit and still carries over 2500 reviews of long-term owner data.
Whatever you pick, measure your water before you order, trim the sheet flat on the deck, take it off whenever you shock, and store it out of the sun. A cover that gets used every day at 12 mil will beat a 16 mil sheet that sits folded, and that is the single biggest factor in how well any of the best solar pool covers for inground pools actually works for you.