Top 10 Best pool leak sealer in 2026

Last Updated - 6/8/2026

🏆Best Choice

GORILLA

Gorilla Waterproof Patch & Seal Tape, Clear Tape, 4" x 8' (Pack of 1) - Permanent Weather Resistant Seal for Leaks and Repairs

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•Permanent seal: This Gorilla tape creates a permanent bond that instantly seals out air, water, and moisture
•All-purpose: Patch & Seal waterproof tape works wherever the work is; Indoor and out, rain or shine, or even under water
•All surface: Our specially formulated adhesive tape conforms to the surface to repair holes, cracks, gaps, and tears
•Weather resistant: The backing of this heavy duty tape is designed to withstand moisture and UV rays without yellowing
•Fixes leaks: A waterproof tape for leaks in roofs, rubber, plastic or vinyl pool liners, and so much more

View offer on:

$14.94

Check Price

Flex Tape

Flex Tape, Original Thick Flexible Rubberized Waterproof Tape - Seal and Patch Leaks, Works Underwater, Indoor Outdoor - Home RV Roof Plumbing and Pool Repairs, Gray, 4 in x 5 ft, Pack of 1

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•FLEX TAPE is a super strong, rubberized, waterproof tape that can patch, bond, seal and repair virtually everything!
•FLEX TAPE is specially formulated with a thick, flexible, rubberized backing that conforms to any shape or object!
•FLEX TAPE can be applied hot or cold, wet or dry, even underwater!
•FLEX TAPE instantly seals out water, air and moisture to create a super strong, flexible, watertight barrier!
•FLEX TAPE is UV resistant, environmentally friendly, VOC-free and has a wide temperature range so it can be used in extreme weather conditions!

View offer on:

$14.87

Check Price

J-B Weld

J-B Weld 8277 WaterWeld Epoxy Putty Stick - 2 oz., Off White

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•J-B WELD WATERWELD: A hand mixable two part epoxy putty stick, that can cure under water and is ideal for repairing plumbing, fuel tanks, tubs and showers, drains, pool and spa, boats & potable water tanks and more! J-B Weld WaterWeld is certified by the NSF and is safe for contact with potable water.
•CURE AND SET TIME: After kneading the two part formula together by hand, WaterWeld takes 25 minutes to set and cures in 1 hour. J-B Weld WaterWeld set and cure color is off white.
•PRODUCT FEATURES AND STRENGTH: J-B Weld WaterWeld has lap shear strength of 1300 PSI, can withstand continuous temperatures up to 300F (149C) and intermittent temperatures of 350F (176 degrees Celsius) and is chemical resistant against petroleum, hydraulic fluids and other chemicals when fully cured.
•SURFACE APPLICATIONS: Iron & Stainless Steel, Copper & Brass, Aluminum & Bronze, Fiberglass and Plastic & PVC.
•DO IT YOURSELF: Big or small, you can DIY it with J-B Weld. Our heavy duty epoxy and adhesives repair & restore it right the first time. J-B Weld delivers superior performance, quality, and results for the World’s Strongest Bond.

View offer on:

$6.17

Check Price

Epoxybond Pool Putty

Epoxybond Pool Putty 2-Part Set | Swimming Pool & Spa Repair | Easy DIY | Fix Cracks Leaks Underwater or Above | Concrete, Fiberglass & Variety of Other Surfaces | by Atlas Minerals

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•SAFE AND LASTING HAND-MOLDABLE PUTTY APPLY TO FIX LEAKS UNDERWATER: So easy and safe to use. Simply mix 1-to-1, mold putty in your hands, and apply to the area where leak or crack.
•STOPS LEAKS & FILLS CRACKS: Once the putty is applied to the leak/crack, it will harden underwater where it will cure/harden. It will not shrink or sag.
•SIMPLE TO APPLY EVEN UNDERWATER – NO NEED TO DRAIN POOL: Our team formulated this product to cure underwater, so you won’t have to drain your pool. Can be used above or underwater.
•RESTORE CHIPPED & BROKEN TILE: No need to live with chipped or broken tile. Use Epoxybond Pool Putty to repair and restore broken and chipped tile.
•COLOR WON’T FADE TO YELLOW, SAG, OR SHRINK: Once it has cured, formulated to keep its color and stay hardened without shrinking, turning yellow, or sagging.

View offer on:

$21.95

Check Price

MAV AquaDoc

Hot Tub Leak Sealer to Fix Leaks Easily - Spa Leak Sealer 16oz, Advanced Spa Repair Chemical Made in the USA - AquaDoc

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•Can't Find a Leak in your Spa or Hot tub? AquaDoc's advanced spa fix a leak sealer helps find and stop leaks - even if you can't find the water leak on your own. Seal a leak for hot tub or spas fast with our hot tub leak sealer.
•Stop leaks within 24 Hours - With our Hot Tub Leak sealant, you can fix a leak for hottubs and spas quickly. Our spa leak sealer & hot tub leak seal works fast to seal minor hot tub leaks. Making a spa leak stop has never been faster.
•Hot Tub Crack Repair Kit - Repair spa leaks without having to drain your water. If you own a hot tub stop leak sealing by draining water first. With our hot tub stop leak formula, you can seal water leaks while the tub is full.
•The only Fix a Leak Seal Kit you Need - With AquaDoc's hot tub sealant, there's no need for spa sealant tools or extra hot tub sealing kits. Our hot tub liquid sealant formula works alone to help seal minor cracks and leaks in your spa or hot tub.

View offer on:

$24.99

Check Price

Marlig Industries

Marlig Fix-A-Leak Pool and Spa Leak Sealer - 32 oz

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•This item will be delivered curbside. To have the item delivered to a location of choice on your property, kindly make additional arrangements with a third party provider ahead of delivery

View offer on:

$26.38

$39.99

-34%

Check Price

Vereclue

Pool Putty, 17.6 OZ, 2 Part Epoxy for Leaks Underwater or Above, Multipurpose Sealer for Crack Repair, Tile, Fiberglass, Concrete, Cement and Other Surfaces

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•Powerful Pool Putty: Pool putty epoxy is ideal for repairing cracks, holes, and leaks on your pool surface for superior, long-lasting repairs. Outperforming traditional pool leak repair sealants in durability and reliability, our high-quality formula prevents yellowing, sagging or shrinkage and provides a color-stable finish. Enjoy a leak-free summer with confidence
•Available Underwater: No need to drain the pool. Pool putty for leaks underwater cures on dry, wet and underwater surfaces, making it easy to apply and adhere perfectly even under water. And when underwater epoxy is fully hardened, it is strong enough to be processed, sanded, and drilled
•Easy to Use: Designed for DIY repairs, this 2 part epoxy putty is user-friendly and requires no professional tools or skills. Simply knead pool repair putty in a 1 to 1 ratio and apply it to any cracks or leaks and it will cure into a color-stable finish for a flawless, professional repair with ease
•Works on Various Surfaces: Our pool crack repair putty works on a variety of surfaces including pools, concrete, fiberglass and tile, bathtubs, toilets, pipes and more, adhering seamlessly to wet and dry substrates. Weather-resistant waterproof pool putty provides all-weather repair and sealing, ensuring your pool/tub remains leak-free
•Intimate After-Sales service: If you are not satisfied with the pool putty underwater you received, or the pool putty white spilled due to transportation, you can contact us at any time and we will be happy to provide you with a new product or refund

View offer on:

$13.59

$16.99

-20%

Check Price

Lo-Chlor

Lo-Chlor Leak Sealer - No Need to Drain Pool Water, Easily Fix a Leak Pool Leak Sealer - Hot Tub Leak Sealer Works in 24 Hours to Fix a Leak Spa and Hot Tub, Fast Acting Pool Leak Repair (32oz)

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•Fast-Acting Leak Repair Solution: With Leak Sealer, leaks are sealed within 24 hours. Fix a leak in your pool or spa with this quick fix pipe leak sealant that provides fast results.
•Seal Minor Pool and Spa Leaks Quickly: Lo-Chlor Leak Sealer works fast to stop leaks in pools and spas losing up to 1" of water per day, saving you time and costly repairs. Ideal for minor leak fix
•No Need to Drain Water: This pool leak sealer saves water by fixing leaks without draining your pool or hot tub, making it a simple and eco-friendly leak repair solution.
•Cost-Effective Leak Detection & Repair: Stop leak costs by sealing pool and spa leaks for a fraction of typical repair service expenses. Just pour into your pool or spa to fix leaks and save money.
•Versatile Leak Sealer for Pools and Spas: Perfect for above ground pool leak sealer, hot tub leak sealer, and spa leak. Highly concentrated, one quart is sufficient to treat a 15,000 gallon pool.

View offer on:

$23.99

Check Price

Marlig Industries

Marlig Industries Seal 32oz Marlig Fix Pool and Spa Leak Sealer 32 oz-2 Pack, Blue

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•Country of Origin: Canada
•Brand: Marlig Industries
•Dimensions: 12" x 12" x 39,370.1"
•No assembly required

View offer on:

$52.12

Check Price

Marlig Industries

Fix-A-Leak by Marlig for Swimming Pool Spa Hot Tub Leaks 32 oz,White

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•With pump running add FIX-A-LEAK slowly through skimmer or in front of any other suction intake.
•After adding FIX-A-LEAK adjust suction to main drain. If this is not possible, the vacuum cleaner could be used alternatively, simply by placing the vacuum in deepest part of pool and connect to normal vacuum connection. Set filter valve to normal vacuum position.
•FIX-A-Leak is very heavy and will sink to the lowest point rather quickly. It must be stirred back into suspension, either manually using a pool broom or mechanically with an automated pool cleaner every 4-6 hrs. during circulation of water.
•After the leak has stopped and given the proper time to cure, (24-48 hrs.) you may return to normal filtration. Sand filters: Set filter valve to filter and resume normal operation. Backwash out unused FIX A-Leak as required. Other Filters: Reinstall filter into tank and Resume operation. Rinse out unused FIX-A-Leak from filter as required.*NOTE* Never let cartridges or DE elements be left to dry before they are cleaned.
•Suction Leaks are usually known by air mixed with the water at the return fittings. In most cases suction lines only leak water when the filter pump is shut off. Normal Circulation will simply draw FIX-A-LEAK away from the leak and if the pump is shut off the material will simply not get to the leak.

View offer on:

$26.99

$39.99

-33%

Check Price

📊

📈 How we rank

With our cutting-edge technology, we examine thousands of products and retailers, assessing reviews, ratings, trends, and sales rankings to identify what matters most to users like you.

Our team evaluates this data alongside genuine user feedback, merging AI analysis with human insights to provide you with real-time, highly-rated recommendations that empower your decision-making with clarity and confidence.