How to Fix a Leak in a Pool Liner


A leak in your pool liner can spoil your summer fun, but you can fix it with a few simple tools. Identifying the leak in your pool is easy if you can see and feel a tear in the liner. If you cannot find the leak, check around items that could pierce the liner, such as the filter drain, ladder or lights. The leak could be at the bottom caused by any rocks or debris that have entered the pool.

Locating the Leak

  • Check around any drains, filters, lighting, slides, ladders or anything else that touches the liner on a daily basis. The tear will usually represent a small smile shape or a crescent moon shape.

  • Check any maintenance equipment and entrance locations to the pool. Tools that enter the pool such as skimmers, vacuums or toys could tear the liner.

  • Check any screws that are in contact with the liner. If a screw is rusty, there is a good chance the leak is not far from it.

  • Check the outside perimeter of the pool. Is there a spot of grass that is more wet than the surrounding lawn, sand or dirt? This could signal an area of the leak in the liner.

  • Visually inspect the liner. This will most likely mean you will have to be in the pool with goggles to see the liner. Feel down the walls and then across the floor. Chances are, the tear is on one of the walls, but rocks could cut the bottom also. Use a bright colored food coloring if you have a suspected area for the leak. When you squirt out a little of the food coloring it should be drawn to the leak.

Fix a Leak in Your Pool Liner

  • Locate the leak. Is it underwater or above water?

  • Purchase a wet or dry patch kit from your local pool supply store. If the leak is underwater, you will want the wet kit. If your leak is in an area you can protect from water, use the dry kit.

  • Follow the instructions in the kit to patch your hole. You will most likely either be applying a thick liquid patch solution to the leak or a vinyl patch.

Tips & Warnings

  • If you have to add more than one inch of water to your pool a week, discounting what has splashed out or waste water, you probably have a leak. If the liner needs to be reset, you will need a vacuum device to suck the air out between the liner, walls and floor.
  • Do not allow the water level to drop below the level of the walls. Do not allow the water level to drop past the leak. If the leak has caused you to lose an amount of water over 12 inches a week, your liner will most likely need to be replaced.

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