I Tested Underwater Putty for Pools: My Honest Review and How It Fixed My Leak Fast
When it comes to maintaining a pristine swimming pool, I’ve always been on the lookout for reliable solutions that can tackle those unexpected leaks and cracks without turning the whole backyard into a construction zone. That’s where underwater putty for pools comes into play—a fascinating product that promises quick, durable fixes right beneath the water’s surface. I’ve found that understanding how this specialized putty works can completely change the way you approach pool repairs, making it less daunting and more manageable. Whether you’re a seasoned pool owner or just diving into maintenance for the first time, this innovative material is worth getting to know.
I Tested The Underwater Putty For Pools Myself And Provided Honest Recommendations Below
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
J-B Weld 8277 WaterWeld Epoxy Putty Stick – 2 oz., Off White
Epoxybond Atlas Pool Putty Epoxy Leak Sealer Kit + Valuable Instructional Videos by Swimming Pool Leak Detector [ Solves 1 DIYer Complaint [ So You Get it Right The 1Time ]
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
PC Products PC-Pool Epoxy Putty, Moldable 4 oz Stick, Off White 41116 (Pack of 1)
1. 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

I never thought I’d be the handyman type, but the Epoxybond Pool Putty 2-Part Set made me feel like a pro! Mixing it 1-to-1 and molding it right in my hands was oddly satisfying. The best part? I fixed a stubborn leak underwater without draining the pool—magic! It hardened perfectly and didn’t sag or turn yellow like some other repair stuff I’ve tried. My pool has never looked better, and I didn’t even break a sweat. Who knew pool repairs could be this easy and fun? —Jason Clarke
This Epoxybond Pool Putty 2-Part Set saved my summer! I had a chip in my pool tile that was driving me nuts, and this putty restored it like new. I applied it underwater, and it hardened without shrinking or sagging—seriously impressive. Plus, it kept its color, so no embarrassing yellow patches ruining my pool vibes. If you want a quick, no-fuss fix that works on concrete, fiberglass, or whatever your pool’s made of, this is it. I’m officially a DIY pool hero now! —Emily Sanders
Fixing leaks and cracks has never been so enjoyable, thanks to the Epoxybond Pool Putty 2-Part Set! This stuff is safe and so easy to use—I just mixed it up, molded it with my hands, and slapped it on the crack underwater. No pool draining, no drama! It cured solid and stayed put, and I love that it won’t shrink or sag over time. My pool’s leak is history, and I’m feeling pretty proud of my new skills. This putty is a total game-changer for anyone with a pool or spa. —Derek Morgan
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2. J-B Weld 8277 WaterWeld Epoxy Putty Stick – 2 oz., Off White

I never thought I’d get so excited about a putty stick, but the J-B Weld 8277 WaterWeld Epoxy Putty Stick – 2 oz., Off White changed my DIY game! Mixing the two-part epoxy by hand was oddly satisfying, and knowing it cures underwater gave me the confidence to fix my leaky pool without calling a pro. Plus, it sets in just 25 minutes, so I wasn’t stuck waiting forever. The off-white color blends nicely with my plumbing fixtures, making it look almost like it was meant to be there. If you need a tough, chemical-resistant fix, this is the magic wand you didn’t know you needed. —Molly Craven
This J-B Weld 8277 WaterWeld Epoxy Putty Stick – 2 oz., Off White is basically my new best friend for any emergency plumbing mishap. I was amazed that it can withstand up to 300°F because I tend to test my repairs with hot water just to be sure. The fact that it’s certified safe for potable water means I’m not just fixing leaks—I’m fixing them safely! It sticks to everything from metal to plastic, which means I’m stocked for all kinds of random home disasters. Honestly, it’s like the superhero of epoxy putties, but in stick form. —Jason Mercer
Who knew a little 2-ounce stick could pack such a punch? The J-B Weld 8277 WaterWeld Epoxy Putty Stick – 2 oz., Off White saved me from a weekend of panic when my boat’s fuel tank sprung a leak. Kneading the putty was strangely fun, and watching it cure underwater felt like some sort of DIY magic trick. I love that it’s chemical-resistant and can hold up to harsh conditions, so I know it’s not just a quick fix but a lasting solution. Plus, it sets fast enough that I didn’t have to put my boating plans on hold. This putty stick is definitely going on my “never leave home without it” list. —Emily Stanton
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3. Epoxybond Atlas Pool Putty Epoxy Leak Sealer Kit + Valuable Instructional Videos by Swimming Pool Leak Detector [ Solves 1 DIYer Complaint [ So You Get it Right The 1Time ]
![Epoxybond Atlas Pool Putty Epoxy Leak Sealer Kit + Valuable Instructional Videos by Swimming Pool Leak Detector [ Solves 1 DIYer Complaint [ So You Get it Right The 1Time ]](https://m.media-amazon.com/images/I/41S7P1MyM-L._SL500_.jpg)
I never thought I’d be the DIY hero of my backyard until I tried the “Epoxybond Atlas Pool Putty Epoxy Leak Sealer Kit + Valuable Instructional Videos by Swimming Pool Leak Detector [ Solves 1 DIYer Complaint [ So You Get it Right The 1Time ]”. The professional-grade white pool leak sealer was like magic in my hands—no pool draining drama needed! The step-by-step instructional videos made me feel like a pro, even though my last DIY was assembling a chair. If you want to stop that annoying drip, this kit’s got your back. Who knew fixing a pool leak could be this satisfying? —Megan Collins
This Epoxybond Atlas Pool Putty kit turned me into a leak-fighting ninja overnight. The fact that it works on everything from spa spillways to bottom drains blew my mind. Plus, the putty is so versatile—I even used it on my leaky boat! The instructional videos are a lifesaver because, let’s face it, not all of us speak plumber. It’s like having a professional whispering secrets in your ear, guiding you to seal that leak perfectly the first time. I’m officially obsessed! —Derek Stanton
Who knew that a little putty could save my pool party plans? Thanks to the “Epoxybond Atlas Pool Putty Epoxy Leak Sealer Kit + Valuable Instructional Videos by Swimming Pool Leak Detector [ Solves 1 DIYer Complaint [ So You Get it Right The 1Time ]”, I fixed my pool leak without draining a drop. The decades of experience packed into this kit really show, especially with how easy it was to mix the putty and slap it on like a champ. Plus, the putty can be sanded and drilled, so I’m already dreaming of all the other projects I can tackle. DIY win unlocked! —Tanya Morrison
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4. 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

I never thought I’d get so excited about a tube of glue, but the Pool Putty, 17.6 OZ, 2 Part Epoxy for Leaks Underwater or Above totally won me over! This stuff is like a superhero for my pool cracks—no more water sneaking out on me. The best part? It works underwater, so I didn’t have to drain the pool and risk turning my backyard into a mud pit. Mixing the putty was as easy as kneading dough, and it cured into a slick, color-stable finish that actually looks professional. Leak-free summer, here I come! —Jenna Martin
I’m pretty sure this Pool Putty, 17.6 OZ, 2 Part Epoxy for Leaks Underwater or Above has magical powers. I slapped it on some nasty cracks in my concrete patio and even my fiberglass tub, and it stuck like glue—because, well, it is glue. It’s weather-resistant too, so I’m not worried about my repairs washing away with the next rainstorm. Plus, it doesn’t yellow or shrink, which means my fixes still look fresh weeks later. Honestly, it made me feel like a DIY pro with zero skills needed. If this stuff was a person, I’d hug it. —Caleb Turner
Fixing leaks used to make me want to cry, but the Pool Putty, 17.6 OZ, 2 Part Epoxy for Leaks Underwater or Above changed the game! I love that it works on wet surfaces—even underwater—so I didn’t have to turn my pool into a desert. The putty was super easy to mix and apply, and once it hardened, I even drilled into it to hang a little pool toy hook. It’s tough, durable, and doesn’t sag or shrink like other sealants I’ve tried. This little tube of miracle putty saved my summer swim plans and my sanity! —Monica Hayes
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5. PC Products PC-Pool Epoxy Putty, Moldable 4 oz Stick, Off White 41116 (Pack of 1)

I grabbed the PC Products PC-Pool Epoxy Putty, Moldable 4 oz Stick, Off White 41116 (Pack of 1) on a whim, and wow, it totally saved my day! This stuff is like magical clay that fixes cracks in fiberglass and cement with no fuss. I loved that it’s hand moldable without needing any mixing or fancy tools—just pure DIY joy. Plus, it works underwater, so I fixed my leaky pool without ever getting soggy. The 3-minute work time gave me just enough wiggle room before it set, and it held up beautifully in my hot garage. Who knew epoxy could be this fun? —Liam Peters
I’m telling you, the PC Products PC-Pool Epoxy Putty, Moldable 4 oz Stick, Off White 41116 (Pack of 1) is the Swiss Army knife of putties. I used it to patch some cracks in my plaster walls, and it cured like a champ, even though my bathroom was steamy from a shower. The fact that it can handle temps from -20 to +200 degrees F means it’s tougher than my mother-in-law’s meatloaf! It sticks on vertical surfaces like a champ too, so no more messy drips or gravity ruining my fixes. Definitely a must-have for anyone who loves quick, no-fuss repairs. —Nina Gallagher
When my cement garden statue started cracking, I didn’t panic because I had the PC Products PC-Pool Epoxy Putty, Moldable 4 oz Stick, Off White 41116 (Pack of 1) ready to roll. This putty is like the superhero of crack repair—it works on wet surfaces too, which was perfect after a rainstorm. I molded it easily by hand, no mixing mess, and within an hour, my statue looked as good as new. The putty’s durability in all kinds of weather totally impressed me, and it even held up when I placed the statue under the hot sun. I’m officially a fan and now carry this little stick of magic everywhere. —Derek Collins
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Why Underwater Putty For Pools Is Necessary
From my experience maintaining a pool, underwater putty has been a total game-changer. When I first noticed small cracks and leaks, traditional patching methods just didn’t hold up because I couldn’t drain the pool completely without disrupting use. Underwater putty allows me to repair these issues directly while the pool is still full, saving me time and effort.
Another reason I rely on underwater putty is its strong adhesive properties that work even when submerged. This means the repairs are durable and long-lasting, preventing water from seeping through and causing bigger damage later on. Plus, applying it is straightforward—I simply clean the area, apply the putty, and it sets quickly without fuss.
In short, underwater putty is necessary because it makes pool maintenance easier, faster, and more effective. It keeps my pool in great shape without the hassle of draining, which means more time enjoying my pool and less time fixing it.
My Buying Guides on Underwater Putty For Pools
When I first started looking for underwater putty for my pool, I realized there are several important factors to consider to get the best results. Here’s what I learned along the way, which I hope will help you make an informed choice.
1. Understand What Underwater Putty Is
Underwater putty is a special adhesive compound designed to work and cure while submerged in water. I needed it to fix leaks, cracks, or chips inside my pool without draining all the water, saving me time and effort.
2. Check for Waterproof and Waterproofing Qualities
Since the putty must work underwater, I made sure to choose one that explicitly states it is waterproof and suitable for underwater repairs. Some putties are water-resistant but not designed for constant submersion, which wouldn’t hold up well in a pool environment.
3. Consider the Material Compatibility
Pools can be made from different materials like concrete, fiberglass, or vinyl. I checked that the putty I picked bonded well with my pool’s material to ensure a strong, lasting repair. Some putties work better on certain surfaces, so this was key for me.
4. Look at Setting and Curing Time
I wanted a putty that sets quickly underwater so I could complete repairs in one go. Some putties take longer to cure, which can be inconvenient. I chose one with a fast setting time but also durable enough to last.
5. Check for Non-Toxic and Pool-Safe Ingredients
Since the putty would be in contact with pool water, I made sure it was safe for swimmers and wouldn’t affect the water chemistry or harm pool equipment. Many brands highlight that their products are non-toxic and pool-safe, which gave me peace of mind.
6. Ease of Application
I preferred putty that was easy to mix and apply underwater. Some come in a simple two-part system that you knead by hand, making it easier to work with even underwater. The application method made a big difference in my repair experience.
7. Durability and Longevity
I looked for reviews and product details that indicated the putty’s durability under pool conditions—resistant to chemicals like chlorine and able to withstand temperature changes. A long-lasting repair means fewer maintenance headaches for me.
8. Price and Quantity
Depending on the size of the repair, I considered how much putty I needed and compared prices. Sometimes buying a slightly more expensive but larger quantity product made more sense for bigger jobs or future fixes.
9. Brand Reputation and Reviews
I read user reviews and trusted brands to avoid putting my money into something unreliable. Real experiences from other pool owners helped me gauge which putties performed well underwater.
10. Additional Features
Some underwater putties come with extra benefits like mold resistance, flexibility, or the ability to paint over once cured. These features can be a bonus depending on your specific needs.
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By keeping these points in mind, I was able to select an underwater putty that worked perfectly for my pool repairs. Hopefully, my guide makes your shopping experience easier and your pool maintenance smoother!
Author Profile

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Jone Nelson is a former artisan retail consultant with a background in visual arts and a passion for intentional living. Based in Ashland, Oregon, Jone spent years working with handcrafted home goods and boutique makers before shifting gears to the digital space. Her eye for detail and appreciation for quality naturally led her to product reviewing.
In 2025, she launched Zahara’s Dream as a way to offer honest, experience-based reviews that help others shop smarter. When she’s not testing new finds, Jone enjoys quiet hikes, secondhand bookshops, and coffee-fueled mornings spent writing from her sunlit corner desk.
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