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Top 9June 2025

Best 21 Foot Round Pool Liner Overlap

We made a list of the top 9 21 Foot Round Pool Liner Overlap based on verified reviews, popularity and other factors which we summarized for you in this list.

Best Choice

Smartline 21 ft Round Swimming Pool Liner | Stone Harbor | Unibead Style | 52 Inch Wall Height | 25 Gauge Vinyl | for Steel Sided Above Ground Pools | Gasket Kit Included

Smartline 21 ft Round Swimming Pool Liner | Stone Harbor | Unibead Style | 52 Inch Wall Height | 25 Gauge Vinyl | for Steel Sided Above Ground Pools | Gasket Kit Included

✓PRETTY PLEASING PATTERN – This tiled bottom in various shades of blue, leads to a marble like tiles. These marble geometric shapes create a simple but classic look. The North American cut material is hand-folded to prevent permanent creasing and excess wrinkling. Before installing, lay the liner out in the sun for a minimum of one hour to warm up the vinyl ensuring it is able to stretch when adding water. The best temperatures to install would be between 70-80 degrees.
✓MEASURE TWICE, BUY ONCE – Whether installing for the first time, or replacing an existing liner, the Stone Harbor pattern offers durability while not breaking the bank. Be sure to check the measurements of your swimming pool to assure the correct size is purchased. Pool height is determined by measuring the outside wall from the ground to underneath the top rail. Round pool size is determined by measuring from the center point wall to wall in order to obtain the diameter.
✓INSTALL IN A SNAP OR A HOOK – This 21' round unibead style liner works with pools with flat-bottoms measuring 52". For an overlap style pool, simply open up the j-hook portion and slip this over the pool wall. For beaded style pools, use the standard bead after removing the j-hook portion along the score or groove mark. This will leave only the standard bead which is inserted into the bead receiver opening. ***Will not work with Pop-Up pools***
✓STAY COOL IN THE POOL – Enjoy the warm weather while spending quality time with family and friends. Your backyard pool will surely become the place to be during those hot summer days. Stay cool in more ways than one with the Stone Harbor liner.
✓UNIVERSAL GASKET SET - The included kit is for the pool’s skimmer and return. This skimmer gasket will work with either standard sized skimmers or widemouth versions. These pieces will help prevent corrosion of the pool wall and should be replaced each time a new liner is installed as they become dry over time which could cause leaks.

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Swimline 21 Foot Round Durable 20 Gauge Vinyl Wall Overlap Pool Cover Liner for 48 and 52 Inch Above Ground Swimming Pools, Blue

Swimline 21 Foot Round Durable 20 Gauge Vinyl Wall Overlap Pool Cover Liner for 48 and 52 Inch Above Ground Swimming Pools, Blue

✓Overlap liner is crafted to transform your pool and increase aesthetic appeal; Suitable for 18 foot round above ground swimming pools which fits most 48 and 52 inch pools
✓Made from durable 20 gauge exceptional virgin vinyl to give you a secure pool cover liner, eliminating the risks of damage from frequent usage or extreme weather
✓Protected against chemicals and fading to preserve your pool’s alluring appearance and aesthetic appeal, allowing it to always look inviting and pleasing to the eyes
✓Guarantees effortless customization making it compatible to any kind or shape of pool, saving you time, energy, and money on installation and replacement
✓Overlap liner requires coping strips (sold separately), to keep your swimming pool liners intact and avoid slipping or shifting for a long-lasting usage

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Smartline 21 ft Round Swimming Pool Liner | Boulder Swirl | Overlap Style | 48-52 Inch Wall Height | 25 Gauge Vinyl | for Steel Sided Above Ground Pools | Gasket Kit Included

Smartline 21 ft Round Swimming Pool Liner | Boulder Swirl | Overlap Style | 48-52 Inch Wall Height | 25 Gauge Vinyl | for Steel Sided Above Ground Pools | Gasket Kit Included

✓MEASURE TWICE, BUY ONCE – Whether installing for the first time, or replacing an existing liner, the Boulder Swirl pattern offers durability while not breaking the bank. Be sure to check the measurements of your swimming pool to assure the correct size is purchased. Pool height is determined by measuring the outside wall from the ground to underneath the top rail. Round pool size is determined by measuring from the center point wall to wall in order to obtain the diameter.
✓PRETTY PLEASING PATTERN - Blue rocks top the swirling water backdrop with the Boulder Swirl pattern. The North American cut material is hand-folded to prevent permanent creasing and excess wrinkling. Before installing, lay the liner out in the sun for a minimum of one hour to warm up the vinyl ensuring it is able to stretch when adding water. The best temperatures to install would be between 70-80 degrees.
✓NO TROUBLE TO INSTALL - Overlap liners are draped over the walls of the pool during the installation process. Once the bottom seam is even near the cove, the liner is ready to be secured. This material is held in place through the use of coping strips prior to putting the top rails back onto the pool. Bead receivers are not needed for this type of liner. The liner is made to work with pools which have a flat bottom and wall heights of 48” or 52”. ***Will not work with Pop-Up pools***
✓STAY COOL IN THE POOL – Enjoy the warm weather while spending quality time with family and friends. Your backyard aboveground pool will surely become the place to be during those hot summer days. Stay cool in more ways than one with the Boulder Swirl liner.
✓UNIVERSAL GASKET SET - The included kit is for the pool’s skimmer and return. This skimmer gasket will work with either standard sized skimmers or wide-mouth versions. These pieces will help prevent corrosion of the pool wall and should be replaced each time a new liner is installed as they become dry over time which could cause leaks.

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Smartline 21 ft Round Swimming Pool Liner | Waves of Poseidon | Overlap Style | 48-52 Inch Wall Height | 25 Gauge Vinyl | for Steel Sided Above Ground Pools | Gasket Kit Included

Smartline 21 ft Round Swimming Pool Liner | Waves of Poseidon | Overlap Style | 48-52 Inch Wall Height | 25 Gauge Vinyl | for Steel Sided Above Ground Pools | Gasket Kit Included

✓MEASURE TWICE, BUY ONCE – Whether installing for the first time, or replacing an existing liner, the Waves of Poseidon pattern offers durability while not breaking the bank. Be sure to check the measurements of your swimming pool to assure the correct size is purchased. Pool height is determined by measuring the outside wall from the ground to underneath the top rail. Round pool size is determined by measuring from the center point wall to wall in order to obtain the diameter.
✓PRETTY PLEASING PATTERN - Tile designs of interchanging navy and sky blues roll like waves at the top of this beautiful Waves of Poseidon pool liner print. The North American cut material is hand-folded to prevent permanent creasing and excess wrinkling. Before installing, lay the liner out in the sun for a minimum of one hour to warm up the vinyl ensuring it is able to stretch when adding water. The best temperatures to install would be between 70-80 degrees.
✓NO TROUBLE TO INSTALL - Overlap liners are draped over the walls of the pool during the installation process. Once the bottom seam is even near the cove, the liner is ready to be secured. This material is held in place through the use of coping strips prior to putting the top rails back onto the pool. Bead receivers are not needed for this type of liner. The liner is made to work with pools which have a flat bottom and wall heights of 48” or 52”. ***Will not work with Pop-Up pools***
✓STAY COOL IN THE POOL – Enjoy the warm weather while spending quality time with family and friends. Your backyard aboveground pool will surely become the place to be during those hot summer days. Stay cool in more ways than one with the Waves of Poseidon liner.
✓UNIVERSAL GASKET SET - The included kit is for the pool’s skimmer and return. This skimmer gasket will work with either standard sized skimmers or wide-mouth versions. These pieces will help prevent corrosion of the pool wall and should be replaced each time a new liner is installed as they become dry over time which could cause leaks

Learn moreon Amazon

Smartline 21 ft Round Swimming Pool Liner | Swirl Bottom | Overlap Style | 48-52 Inch Wall Height | 25 Gauge Vinyl | for Steel Sided Above Ground Pools | Gasket Kit Included

Smartline 21 ft Round Swimming Pool Liner | Swirl Bottom | Overlap Style | 48-52 Inch Wall Height | 25 Gauge Vinyl | for Steel Sided Above Ground Pools | Gasket Kit Included

✓MEASURE TWICE, BUY ONCE – Whether installing for the first time, or replacing an existing liner, the Swirl Bottom pattern offers durability while not breaking the bank. Be sure to check the measurements of your swimming pool to assure the correct size is purchased. Pool height is determined by measuring the outside wall from the ground to underneath the top rail. Round pool size is determined by measuring from the center point wall to wall in order to obtain the diameter.
✓PRETTY PLEASING PATTERN - Your swimming pool will have a nearly bottomless appearance with the rolling water along the floor of this Swirl Bottom pattern liner. The North American cut material is hand-folded to prevent permanent creasing and excess wrinkling. Before installing, lay the liner out in the sun for a minimum of one hour to warm up the vinyl ensuring it is able to stretch when adding water. The best temperatures to install would be between 70-80 degrees.
✓NO TROUBLE TO INSTALL - Overlap liners are draped over the walls of the pool during the installation process. Once the bottom seam is even near the cove, the liner is ready to be secured. This material is held in place through the use of coping strips prior to putting the top rails back onto the pool. Bead receivers are not needed for this type of liner. The liner is made to work with pools which have a flat bottom and wall heights of 48” or 52”. ***Will not work with Pop-Up pools***
✓STAY COOL IN THE POOL – Enjoy the warm weather while spending quality time with family and friends. Your backyard aboveground pool will surely become the place to be during those hot summer days. Stay cool in more ways than one with the Swirl Bottom liner.
✓UNIVERSAL GASKET SET - The included kit is for the pool’s skimmer and return. This skimmer gasket will work with either standard sized skimmers or widemouth versions. These pieces will help prevent corrosion of the pool wall and should be replaced each time a new liner is installed as they become dry over time which could cause leaks.

Learn moreon Amazon

Swimline LI214820 21 Foot Solid Blue Round Above Ground Swimming Pool Overlap Liner 20 Gauge Vinyl Liner for 48 to 52 Foot Pool Walls

Swimline LI214820 21 Foot Solid Blue Round Above Ground Swimming Pool Overlap Liner 20 Gauge Vinyl Liner for 48 to 52 Foot Pool Walls

✓Elevates The Appeal Of Your Pool: Durable and sleek, this overlap liner provides robust protection, safeguarding your round above-ground pool from potential damage and wear
✓Premium Coating: Constructed from sturdy 20-gauge virgin vinyl, this high-quality liner provides a durable outer coating for hard sided above-ground pools
✓Longevity-Focused Material: Insulated against chemicals and fading, the pool padding ensures long-lasting durability for years of reliable and enjoyable use
✓Hassle-Free Stitching: Robust seams guarantee longevity, offering a dependable shield for your swimming pool against the elements for worry-free, lasting protection
✓Accurate Sizing: Designed to accommodate pool sidewalls of both 48 and 52 inches, please be aware that coping strips, sold separately, are necessary for the overlap liner

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Aqua Coastal Bali Overlap Round Above Ground Pool Liner, 48"-54" (21')

Aqua Coastal Bali Overlap Round Above Ground Pool Liner, 48"-54" (21')

✓Made from 100% virgin vinyl material and a standard 20 GA thickness

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Blue Wave Evening Bay Overlap 21 ft Round Pool Liner for Above-Ground Steel Wall Pools – Weather Resistant Standard Gauge Vinyl with Welded Seams - Dark Blue, Fits 48/54-In Depth Walls

Blue Wave Evening Bay Overlap 21 ft Round Pool Liner for Above-Ground Steel Wall Pools – Weather Resistant Standard Gauge Vinyl with Welded Seams - Dark Blue, Fits 48/54-In Depth Walls

✓ABOVE-GROUND ROUND POOL LINER – Swimming pool liners set the tone for the entire pool. The Evening Bay liner features deep blues, with light blue highlights that create shimmering water-like effects. Ideal for new installations and replacements.
✓PREMIUM VINYL CONSTRUCTION – Crafted from flexible, standard-gauge vinyl that resists punctures and abrasions, this above ground pool liner offers reliable strength and performance for everyday swimming season after season.
✓WEATHER-RESISTANT FOR COLOR RETENTION – Built-in sun inhibitors help protect these above ground pool liners from harmful sunlight and pool chemicals, reducing fading and deterioration over time to maintain their vibrant appearance.
✓FAST, FLEXIBLE INSTALLATION – The overlap design of these pool liners for above ground pools provides a secure, forgiving fit that simplifies setup. Ideal for a range of pool shapes with steel walls and 48 to 54-in depths.
✓LONG-LASTING, WARRANTY INCLUDED – Blue Wave’s welding process ensures the liner has smooth, durable seams for ultimate protection against seam failure for years to come. Backed by a 15-year limited warranty. Available in 8-ft to 30-ft round sizes.

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Blue Wave Emerald Coast Overlap 21 ft Round Pool Liner for Above-Ground Steel Wall Pools – Weather Resistant Standard Gauge Vinyl with Welded Seams - Dark Blue, Fits 48/54-In Depth Walls

Blue Wave Emerald Coast Overlap 21 ft Round Pool Liner for Above-Ground Steel Wall Pools – Weather Resistant Standard Gauge Vinyl with Welded Seams - Dark Blue, Fits 48/54-In Depth Walls

✓ABOVE-GROUND ROUND POOL LINER – Inspired by natural agate stones, the Emerald Coast liner features vivid blues and greens that form a vibrant border around a deep blue pattern. Its look enhances any pool whether for new installation or replacement.
✓PREMIUM VINYL CONSTRUCTION – Crafted from flexible, standard-gauge vinyl that resists punctures and abrasions, this above ground pool liner offers reliable strength and performance for everyday swimming season after season.
✓WEATHER-RESISTANT FOR COLOR RETENTION – Built-in inhibitors help protect these above ground pool liners from harmful sunlight and pool chemicals, reducing fading and deterioration over time to maintain their vibrant appearance.
✓FAST, FLEXIBLE INSTALLATION – The overlap design of these pool liners for above ground pools provides a secure, forgiving fit that simplifies setup. Ideal for a range of pool shapes with steel walls and 48 to 54-in depths.
✓LONG-LASTING, WARRANTY INCLUDED – Blue Wave’s welding process ensures the liner has smooth, durable seams for ultimate protection against seam failure for years to come. Backed by a 15-year limited warranty. Available in 8-ft to 30-ft round sizes.

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