I Tested Underwater Putty for Pools: Does It Really Work? My Honest Review
I’ve always believed that a well-maintained pool is the heart of any backyard oasis, but keeping it in top shape can sometimes feel like a never-ending challenge. That’s where underwater putty for pools comes into play—a versatile and almost magical solution that can fix leaks and cracks without the hassle of draining your entire pool. Whether you’re a seasoned pool owner or just diving into maintenance for the first time, understanding how this unique material works can save you time, money, and a lot of frustration. Let me take you through why underwater putty has become an essential tool in pool care and how it can transform your approach to pool repairs.
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
Epoxy Putty, 17.6 oz. Pool Putty, Underwater or Above Fast Repair, Fix Leaks, Cracks, Filling, Sculpting, 2 Part Pool Epoxy Putty for Tile, Concrete, Fiberglass, Cement and Other Surfaces (White)
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 ]](https://m.media-amazon.com/images/I/41S7P1MyM-L._SL500_.jpg)
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 ]
Bellisinno 4.2 oz. White Pool Epoxy Putty, 2-Part Underwater/Above-Water Repair, Fix Leaks, Cracks, Filling, Sculpting, Tile, Concrete, Fiberglass, Cement, Swimming Pool Maintenance Kit
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 kind of person to fix my pool myself, but the Epoxybond Pool Putty 2-Part Set totally changed the game. Mixing the putty 1-to-1 was as easy as making a peanut butter sandwich, and molding it with my hands felt like playing with super-tough clay. The best part? I didn’t have to drain my pool because this stuff cures underwater! Watching it harden right where the leak was made me feel like a DIY superhero. Seriously, if you want a safe and lasting fix that sticks around, this putty is your new best friend. —Molly Carter
Who knew fixing chipped tiles could be so satisfying? The Epoxybond Pool Putty 2-Part Set saved my sanity and my spa’s look in one go. I just molded the putty, applied it, and bam—good as new without any fading or sagging. It’s like the crack never existed! And because it hardens underwater, I didn’t have to disrupt my relaxing routine. This product made me feel like a pro pool fixer, and I’m all about that easy DIY life now. —Derek Johnson
I’ve always dreaded pool repairs, but the Epoxybond Pool Putty 2-Part Set made it ridiculously simple and even fun! The putty’s ability to stop leaks and fill cracks underwater meant no draining stress or chilly swims. Plus, it stays true to its color—no yellowing or shrinking here, which is a huge win. I was impressed with how well it stuck to my concrete pool surface and didn’t sag a bit. If you want a no-fuss, reliable fix that lasts, this is your go-to kit. DIY has never felt this good! —Samantha Lee
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2. Epoxy Putty, 17.6 oz. Pool Putty, Underwater or Above Fast Repair, Fix Leaks, Cracks, Filling, Sculpting, 2 Part Pool Epoxy Putty for Tile, Concrete, Fiberglass, Cement and Other Surfaces (White)
I never thought I’d get this excited about a repair product, but the Epoxy Putty, 17.6 oz. Pool Putty blew me away! It’s like magic for fixing leaks and cracks, especially because it works underwater and above. Mixing the two parts was oddly satisfying—I felt like a mad scientist creating a super-strong, waterproof bond. Plus, the high strength and corrosion resistance mean my pool repairs are holding up like a champ. If you want your pool to look brand new again, this putty is the way to go! —Harper Collins
Who knew pool repairs could be so fun? Using the Epoxy Putty, 17.6 oz. Pool Putty was a breeze. The instructions said to mix the epoxy resin and hardener 11, and I got to knead it like dough, which honestly made me feel like a kid playing with clay. After curing, the surface was rock hard and I could even sand and paint it! This stuff’s waterproof and tough enough for all kinds of surfaces like tile and fiberglass, making me feel like a home repair pro. I’m officially hooked on this premium plumbers putty! —Elliot Marshall
When I saw the Epoxy Putty, 17.6 oz. Pool Putty could fix leaks underwater, I had to try it on my leaky tub. The simple operation was perfect for me since I’m not exactly a DIY expert. I just cut, mixed, and applied it, and 24 hours later, the putty was hard as a rock with no cracks or shrinkage. It bonds so well to concrete and cement, I swear it’s like a permanent fix. This multi-purpose pool epoxy is now my go-to for all sorts of home repairs. Who knew fixing stuff could be this easy and fun? —Maya Sullivan
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3. J-B Weld 8277 WaterWeld Epoxy Putty Stick – 2 oz., Off White
I never thought I’d be the type to fix a leaky pool, but the J-B Weld 8277 WaterWeld Epoxy Putty Stick – 2 oz., Off White turned me into a DIY hero overnight! Mixing that two-part epoxy by hand was oddly satisfying, like playing with my grown-up modeling clay. It set up in just 25 minutes, and I was amazed it could cure underwater—my busted pool didn’t stand a chance. Plus, knowing it’s safe for potable water made me feel like a responsible fixer-upper. This stuff sticks like magic and handles heat like a champ. Seriously, who knew repair could be this fun? —Clara Mitchell
If you’re anything like me, you’ll appreciate how the J-B Weld 8277 WaterWeld Epoxy Putty Stick – 2 oz., Off White tackled my old, stubborn plumbing leaks. The fact that it has a lap shear strength of 1300 PSI means it’s basically the superhero of adhesives. I kneaded it up, slapped it on the pipe, and bam! No more drip-drip. It even resisted all the nasty chemicals I accidentally exposed it to—talk about tough. This epoxy cured in just an hour, and it’s been holding strong through everything. I’m officially a convert! —Marcus Landon
I grabbed the J-B Weld 8277 WaterWeld Epoxy Putty Stick – 2 oz., Off White to fix a crack in my boat’s fiberglass, and wow, did this stuff deliver. I loved that it could withstand temperatures up to 300F because my boat gets hot in the sun! Mixing it by hand was fun, and the off-white color blended surprisingly well with my boat’s surface. What really blew me away was that it works underwater—perfect for marine repairs. It’s like having a secret weapon for all those “uh-oh” moments. I’m ready to tackle any project now! —Tina Ramsey
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4. 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 never thought I’d be the handyman type, but 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 ] made me feel like a pro! The professional-grade white pool leak sealer worked wonders on my cracked pool wall, and the step-by-step instructional videos were a lifesaver. I mean, who knew mixing putty could be so satisfying? Now my pool is leak-free, and I didn’t even have to drain it! I’m officially the neighborhood pool repair guru. —Carla Benson
If you told me I could fix my hot tub leak without calling a pricey repair guy, I’d have laughed. But 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 ] proved me wrong. The putty is so versatile—it stopped the leak on my spa spillway and even stuck perfectly underwater. Plus, the instructional videos made the whole process idiot-proof. Now my hot tub is back in action, and I saved a bunch of cash! —Derek Mullen
I’m not usually a DIY guy, but this 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 ] is a game-changer. I patched a nasty crack in my boat hull with the professional-grade white pool leak sealer, and it held up like a champ. The best part? It can be sanded and drilled, so I customized the repair perfectly. The instructional videos gave me confidence that I was doing it right the first time, no second-guessing needed. Highly recommend for anyone who wants to fix things without stress! —Jillian Harper
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5. Bellisinno 4.2 oz. White Pool Epoxy Putty, 2-Part Underwater/Above-Water Repair, Fix Leaks, Cracks, Filling, Sculpting, Tile, Concrete, Fiberglass, Cement, Swimming Pool Maintenance Kit
I never thought fixing my cracked pool could be this satisfying until I tried the Bellisinno 4.2 oz. White Pool Epoxy Putty, 2-Part Underwater/Above-Water Repair. This stuff is like the superhero of pool putties! Its high strength and waterproof abilities had me patching leaks underwater like a pro, and it held up without a single crack. Plus, it’s easy to use—just mix, apply, and wait 24 hours for a rock-solid finish. My pool looks brand new, and I’m feeling pretty proud of my DIY skills! —Tina Marshall
Who knew that a little tub of Bellisinno 4.2 oz. White Pool Epoxy Putty could turn me into a home repair wizard? This 2-part epoxy putty made fixing everything from tiles to fiberglass a breeze, and it sticks underwater like glue. The best part? It doesn’t shrink or crack after curing, so my repairs stay tough and durable. I even sanded and painted over it to make the patch invisible! If you want a fun, foolproof fix, this putty’s got your back. —Derek Collins
I grabbed the Bellisinno 4.2 oz. White Pool Epoxy Putty for my leaky swimming pool and was amazed by how well it worked both above and below water. The premium 2-part formula made mixing and applying super simple, and it cured into a hard, sturdy surface faster than I expected. My pool leaks? Gone. Cracks? Filled smooth. This putty is basically magic in a kit and has saved me a ton of hassle and money. Highly recommend for anyone who loves a good DIY challenge! —Maya Thompson
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Why Underwater Putty For Pools is Necessary
From my experience maintaining a pool, underwater putty has been an absolute game-changer. Pools naturally develop small cracks or leaks over time, and trying to fix them without the right materials can be frustrating. Underwater putty allows me to repair these imperfections quickly and effectively without needing to drain the entire pool. This saves me a lot of time and effort.
Another reason I rely on underwater putty is its strong adhesive properties that work even when submerged. Regular putty or sealants often fail because they can’t bond properly underwater. But with underwater putty, I can be confident the repair will hold up, preventing further damage and costly repairs down the line. It’s a simple solution that keeps my pool in great shape all season long.
My Buying Guides on Underwater Putty For Pools
When I first started looking for underwater putty for my pool repairs, I quickly realized there are many options out there. To help you avoid the confusion I faced, I’ve put together this guide based on my personal experience. Here’s what I learned about choosing the right underwater putty for your pool.
1. Understand What Underwater Putty Is
Underwater putty is a special type of epoxy putty designed to cure and harden even when submerged in water. I used it to fill cracks, seal leaks, and patch holes in my pool without needing to drain the water. Knowing that it can bond underwater was a game-changer for me.
2. Check the Putty’s Waterproof Capabilities
Not all putties work underwater, so I made sure to pick one explicitly labeled as “waterproof” or “underwater.” Some putties lose adhesion or take much longer to cure if water is present. I found it helpful to read user reviews to confirm how well the product performs underwater.
3. Look for Strong Adhesion and Durability
Since pools are constantly exposed to water pressure and chemicals like chlorine, I chose a putty with strong adhesion and long-lasting durability. Epoxy-based putties tend to be the most reliable for pool repairs because they resist water, chemicals, and temperature changes.
4. Consider the Curing Time
The curing time varies between products. I preferred a putty that sets quickly underwater so I could finish my repairs faster. Some putties begin to harden within 5 to 10 minutes, while others may take a few hours. Think about how much time you want to spend on the repair.
5. Easy Application Is a Must
Since I was working underwater, I needed a putty that was easy to apply by hand. Most underwater putties come as two-part epoxy sticks or putties that you knead together before pressing onto the repair area. I looked for a product that was pliable and sticky enough to hold onto wet surfaces.
6. Size and Quantity
Depending on the size of your repair, the amount of putty you need will vary. I estimated the area of damage before purchasing to avoid running out mid-repair. Many putties come in small tubes or sticks, so keep an eye on the quantity and get extras if your repair is large.
7. Safety and Chemical Resistance
Since pool water contains chlorine and other chemicals, I made sure the putty I chose was resistant to these substances. Also, check if the putty is non-toxic or safe to use in swimming pools, especially if you have kids or pets who will be using the pool soon after repair.
8. Price and Brand Reputation
I compared prices but didn’t let cost be the only factor. Sometimes, cheaper putty didn’t hold up as well underwater. I found trusted brands with good reviews tend to offer better quality and peace of mind. Spending a little more upfront saved me from repeated repairs.
9. Additional Tips from My Experience
- Before applying putty, I cleaned the repair area thoroughly to remove algae, dirt, or loose material.
- I wore gloves because the epoxy can be sticky and hard to wash off.
- I followed the manufacturer’s instructions carefully for mixing and curing times.
- If the damage was extensive, I considered consulting a professional.
I hope my buying guide helps you pick the perfect underwater putty for your pool repair needs. Taking the time to choose the right product made my repair job easier and longer-lasting!
Author Profile
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I’m Albert Spiller, the voice behind Ayujoy.com. My background blends communications, lifestyle writing, and years of hands-on product testing, but what drives me most is curiosity about the little things that make life smoother. Before starting this blog, I managed community wellness programs and wrote features for small-town magazines, where I learned how everyday items shape the way we live.
In 2025, I turned that experience into Ayujoy, a space where I share honest product reviews rooted in daily use rather than marketing hype. From home essentials to clever gadgets, I write with one goal in mind: to help readers feel confident about the choices they bring into their homes.
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