How to Repair & Fix a Leak in a Pool


A leaky pool means a watery mess and constant refilling of the pool with cold water. Repairing a leak in your pool will allow the same water to remain in the pool so it can heat up throughout out the summer, making for a more comfortable place to swim. There are a few types of products to choose from when repairing a hole in your pool.

  • Use a flexible rubber-based sealant, such as Nitrile Rubber based sealant, that provides a strong adhesive bond to most swimming pool materials. A light coat of this flexible sealer will skin over a leak within minutes of application; thicker coats may take hours. Rubber-based sealant can be used to seal vinyl pool leaks with or without a patch, seal between pool liners face plates or fittings, or seal small cracks in gunite or plaster. It's available in white or vinyl blue.

  • Use two-part hand-moldable epoxy putty. It cures to a smooth white finish between 40 and 60 minutes from application. Two-part hand-moldable epoxy putty blends well to maintain a presentable look and can be used to fill and repair cracks in plaster, gunite, fiberglass or acrylic. It's available in white, tan, grey or black.

  • Use hand moldable rubber gap filler. It can be applied underwater without a caulk gun. Hand moldable rubber gap filler retains a flexible, tacky consistency so it's well suited for fixing many kinds of pool leaks. You can pack it around the light cable to seal a leaking light conduit, replace rubber gaskets with or without removing the fitting, and fill or seal cracks, voids or gaps.

  • Use a vinyl patch kit. This kit can be used for repairs above or below water. It uses a vinyl adhesive that holds a vinyl patch in place over the leak.

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  • Photo Credit in pool image by Svetlana Kashkina from
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