How to Repair a Pool Leak with Flex Tape

“How To Repair a Pool Leak with Flex Tape” was written by a member of the Flex Seal Editorial Team. All photos taken by Flex Seal Studios.

If you need to fix a pool leak fast, Flex Tape is a quick and reliable solution. This super-strong, rubberized, waterproof tape is designed to seal out water, air, and moisture – even underwater. Whether you're patching a tear in a vinyl pool liner or sealing a crack in a fiberglass shell, Flex Tape is ready to get the job done right.  

1. Prepare the Surface  

Wipe away dirt, grease, algae, or debris with a rag and pool-safe cleaning solution. A clean surface helps Flex Tape adhere better.  

2. Cut the Tape  

Before removing the clear protective backing, use a razor blade to cut two pieces of Flex Tape slightly larger than the damaged area. This helps create a stronger seal by covering beyond the edges of the tear or crack.  

3. Peel & Stick  

Peel off the backing and press the first piece of Flex Tape on the inside of the pool, directly over the leak. Smooth out any air bubbles and press firmly. Then, apply the second piece to the outside of the pool for added reinforcement and durability.  

Flexpert Tip: For a secure seal, use a plastic squeegee to flatten the tape. 

What Type of Pools Can Flex Tape Repair?  

Flex Tape is a powerful pool liner repair tool that works on a variety of pool materials, including:  

Vinyl Pools: Patch punctures or tears in above-ground pool liners and inflatable pools.  

Fiberglass Pools: Seal cracks or fractures in fiberglass shells. Clean the area thoroughly for best adhesion.  

Concrete & Plaster Pools: Fix small surface cracks. Press firmly to ensure Flex Tape conforms to the rough texture.  

Tile Pools: Works well on smooth, clean tile surfaces commonly found in spas and decorative pools.  

Flexpert Tip: Flex Tape also works on PVC, acrylic, metal, steel, wood, cement, some plastics, and more. However, always test before use, as Flex Tape may not bond with all materials.  

Benefits of Using Flex Tape for Pool Leaks  

• Instantly seals out water and air  
• Adheres to vinyl, fiberglass, concrete, tile, and more  
• Waterproof for long-lasting hold  
• Strong, flexible backing conforms to virtually any surface  
• No glue or heat needed – just peel and stick  
• Works on wet or dry surfaces  
• Can be used for semi-permanent and emergency swimming pool repairs  

Flexpert Tip: Once applied, Flex Tape cannot be repositioned.  

Don’t let a pool leak put your summer plans on pause. Flex Tape is a fast and easy way to patch, seal, and protect your above-ground pool, so you can get back to relaxing in the sun.