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    21 ft Round Pool Overlap Liners

      21 ft Round Pool Overlap Liners is rated 4.8 out of 5 by 5.
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    21 Ft Round Pool Overlap Liner is the Perfect Upgrade for Your Pool

    Whether you need to replace your pool’s liner or you just bought a brand new pool, this 21 ft round pool liner provides outstanding durability with a great look. Constructed of heavy, super-strong virgin vinyl, the liner is easy to install as it drapes over the pool wall and is secured by clips. Use this overlap pool liner in any above ground pool with 48 inch or 52 inch sidewalls and a flat bottom.

    • 21 Ft round pool overlap liner features double welded seams for rugged construction and superior resistance to wear, tear and weather
    • Won’t fade from sun’s UV rays and pool chemicals
    • Super strong virgin vinyl is used for exceptional durability
    • Our 20 gauge liners are backed by a 15 year warranty
    • Our 25 gauge liners are backed by a 25 year warranty
    • Our 30 gauge liners are backed by a 25 year warranty
    • Easy to install; affordably priced
      • Item: # L1020A Solid Blue - 20-Gauge Overlap $143.99
      • Item: # L1220A Solid Blue - 25 Gauge Overlap $204.99
      • Item: # L1408A Solid Blue - 30 Gauge Overlap $229.99
      • Item: # L1020B Swirl Floor - 20-Gauge Overlap $193.99
      • Item: # L1220B Swirl Floor - 25 Gauge Overlap $351.99
      • Item: # L1020C Boulder Swirl - 20-Gauge Overlap $224.99
      • Item: # L1220C Boulder Swirl - 25 Gauge Overlap $302.99
      • Item: # L1020E Rolling Wave - 20 Gauge Overlap $259.99
      • Item: # L1020D Blue Stone - 20-Gauge Overlap $285.99
      • Item: # L1020F Caribbean - 20-Gauge Overlap $280.99
      • Customer Review
      • MORE INFO
      Rated 5 out of 5 by from Good quality pool at a great price Needed a new liner and they had what I needed on sale
      Date published: 2016-09-24
      Rated 5 out of 5 by from Great liner Bought this liner three years ago. It is holding up very well and still looks beautiful. Handles the winters very well.
      Date published: 2016-06-23
      Rated 5 out of 5 by from Great pool liner I ordered the Boulder swirl pool liner. It is very good quality and also not to mention very pretty.
      Date published: 2016-05-18
      Rated 5 out of 5 by from Great color! Bought bolder swirl liner three weeks ago. It came to my home in one day love the fast delivery! The two shades of blue in this liner are beautiful.
      Date published: 2015-07-01
      Rated 4 out of 5 by from Pretty pleased I installed this liner this past weekend. All in all- as far as liners go- it was not too difficult. As with all liners you must assure that the seam between the floor and the wall is evenly positioned around the entire circumfrence on the pool, not only to maintain the intergrity of the liner- but to make sure your pattern on the wall is symmetrical all the way around the pool top. Follow instructions carefully and you will be very pleased with the finished product. I recommend once you get the liner opened in the pool bottom- to fold the walls inward so that you can see the floor seam- then with a few people in the pool- guide the seam evenly around the floor / wall junction until it is as centered as possible. The begin working the walls of the liner up and set them into place temporarly - you will need to continue to adjust as the water level increases. Do not begin filling the pool until you have removed as many creases from the floor as possible- then once you begin to fill- stay in the pool so that you can continue to work out little creases here and there- i used a broom for this part- once you get to 1 inch or so of water - you are pretty much stuck- it is worth it to take your time on this step especially. Start in the center of the pool and work your way out and around. As the water level works its way up the pool- continue to work the walls to elimiate bubble and creases. Good Luck!
      Date published: 2013-05-06
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      Installation Instructions
      • 2” gray duct tape with non-asphalted adhesive
      • screwdriver
      • garden hose
      • sharp nail or ice pick
      • industrial vacuum or household vacuum (filter bag removed)
      • tamping tool
      • masking tape
      • utility knife

        WARNING: Liner should be stored at room temperature for at least 72 hours prior to installation.


      1. Spread a 2” layer of brick sand over the entire pool foundation area inside the base rails. Use a rake to make the brick sand flat and smooth. Tamp sand to help reduce footprints. In place of brick sand, you can use “Soft Step” Floor Padding. Cut the sheets to fit and join them with duct tape along the whole length of each seam.

      2. With the brick sand, make a curved cove about 4” high and 4” wide all around the bottom of the pool wall on the inside. Pack firmly into shape. Pool Cove can also be used.


      1. Place the closed liner carton in the center of the pool.

      2. Open the carton. Do NOT use anything sharp to open the carton.

      3. Unfold the liner and spread it out in the sun to warm up.

      4. Inspect all seams and surfaces for holes.

      5. Spread out liner. The curved seam should be centered on the cove at the base of the wall. The other seams will form straight lines across the bottom of the pool. If seams appear to have flaps, check to see if correct side is up.

      6. Smooth out all wrinkles in the bottom.

      7. If you have a beaded liner, fasten the liner in place by lifting the sides of the liner and inserting the beaded edge into the liner retainer on the top edge. If you do not have a beaded liner, lift the sides of the liner and drape them over the top of the pool wall. Fasten liner to the top of the wall with plastic coping. Let the liner hang slack for now. Do NOT pull liner tight.

      8. Start filling the pool with water. As the pool fills, work out the wrinkles and smooth the liner to the wall. Remove the plastic coping around the top edge of the wall one piece at a time and adjust the liner. Keep smoothing out the wrinkles.

      9. Do not install faceplates, inlets, light fixtures, etc. until water reaches 3” below each opening. Premature installation might result in the liner tearing away from the opening due to stretching as the water level increases.

      10. Proceed filling pool until water reaches desired level.


      1. To remove air from behind the liner, which prevents wrinkles, insert a vacuum cleaner hose through the skimmer hole in the pool wall behind the liner. To minimize vacuum loss, seal the opening around the hose and the water inlet using cardboard and masking tape.

      2. Turn vacuum cleaner on. While vacuum is running, you should be adjusting the liner with short tugs to eliminate wrinkles. If you have trouble shifting the liner into position, shut vacuum off for a few minutes. You should then be able to adjust the troubled area before continuing with the vacuum.

      3. Start filling the pool with water. The vacuum cleaner should continue to run until water level nears the top. Make sure to keep vacuum cleaner hose above the water level at all times.
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