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5 Best Epoxy For Toilet Tank Repair | Reviews & Buyer’s Guide

Toilet tank parts replacement. A man in orange gloves repairs the toilet tank drain

Disclaimer | This article may contain affiliate links, this means that at no cost to you, we may receive a small commission for qualifying purchases.

Do you have a broken toilet tank, and you’re unsure what to do about it?

A toilet has two components, a tank, and a bowl. The tank is quite susceptible to damage and corrosion, irrespective of the brand. This is usually because it has many sub-parts and is a little weaker structurally.

In addition to that, toilet tanks have a handle for flushing and two valves, which also tend to break down and crack fairly easily. However, you can seal the cracks yourself without much difficulty.

So, now, if you’re wondering how to fix this problem, you could get some epoxy glue that will effectively do the job. But are you unable to figure out which one to get? Don’t worry, because we’ve got you covered with this guide on the best epoxy for toilet repair, so read on to know more!

Best Epoxy For Toilet Tank Repair

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IMAGE PRODUCT DETAILS
Our Top PickOur Top Pickhstcstbl-table__imageJ-B Weld
  • Takes 25 minutes to set and one hour to cure
  • Tensile strength of 1300 PSI
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hstcstbl-table__imageLoctite
  • Marine epoxy
  • 25 ml volume
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hstcstbl-table__imageXUDOAI
  • Changes to a greenish-gray upon kneading
  • Cures in 24 hours
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hstcstbl-table__imagePC Products PC-11
  • Volume of 60 ml
  • Off-white color
  • Tensile strength of 1710 PSI
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hstcstbl-table__imagePratley
  • Two-part epoxy
  • Comes in a tube
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Professional plumber in uniform is repairing toilet bowl in the domestic bathroom with the help of tools

1. J-B Weld

First up on our list is the J-B Weld 8277, which is a super-efficient glue that can fix porcelain surfaces, ceramic, plastic, concrete, and even marble. It can be used to plug holes and seal gaps on a toilet tank, which makes it handy to have around. What’s more, it can also help fix drains, fuel tanks, and underwater objects.

J-B Weld 8277 WaterWeld Epoxy Putty Stick - 2 oz.
  • J-B WELD WATERWELD: A hand mixable two part epoxy putty...
  • CURE AND SET TIME: After kneading the two part formula...

Why Did We Like It?

This is a two-part epoxy stick that can be mixed by hand and is ideal for repairing a broken toilet tank. Once both the compounds are mixed together, the epoxy takes only 25 minutes to set and one hour to cure. As such, we love the speed and efficiency of this glue, as well as the smooth white finish!

In addition to that, the epoxy has a tensile strength of 1300 PSI, and it can resist extreme heat too, up to 350 degrees Fahrenheit. It’s also non-reactive with chemicals like hydraulic fluid and petrol once it is fully cured.

We were impressed by how this adhesive can make firm bonds even underwater, which means that you can use it for marine repairs too. It’s also been certified by the NSE as safe for contact with drinking water which makes it super non-toxic and reliable.

31DCy11albL. SL500

What Could’ve Been Better

Though our ultimate experience with the product was undoubtedly excellent, we did run into some issues. We received a defective product twice in a row, after which we lodged a strongly-worded complaint with customer support. After that, we got a functioning unit, but we did have some unnecessary hassle at the start.

Pros
  • Fast-acting
  • Resistant to heat
  • Durable
  • Bonds underwater
  • Safe for contact with potable water
Cons
  • Received defective product twice in a row

2. Loctite

The Loctite 1919324 is a versatile epoxy that can be used to bind different kinds of materials together. It is compatible with glass wood, plastic and metal in addition to ceramic and porcelain and provides a shock-resistant adhesion that stands the test of time. In addition to this, its volume is 25 ml, and it gives a smooth white finish.

Loctite 1919324 Marine Epoxy 0.85-Fluid Ounce Syringe...
  • Machinable, won't crack when drilled
  • Water and solvent resistant, highly durable

Why Did We Like It?

One of the features we really liked about this product was that even though it is supposed to be a marine epoxy, it does a great job of repairing toilet tanks and other ceramic objects. It is packaged in a syringe, which makes it convenient to use since it dispenses the same amount of the adhesive each time.

In addition to that, once the glue dries, it is extremely durable and can even be drilled into, with no signs of cracking. Moreover, it is solvent resistant and can even be sanded or cleaned up easily without any damage.

Another cool thing about this adhesive that we liked is it can be applied and cured even while it’s below the water. This makes it truly resistant to water and eliminates the need to drain out water before applying the adhesive.

What Could’ve Been Better

This adhesive performed as we expected it to and did a great job of repairing our toilet tank. However, we did notice that once dry; it’s a little shiny apart from being white. That worked for us since toilet tanks are usually a glossy white too, but that may not work with other products that need to be fixed.

Pros
  • Compatible with a lot of materials
  • Can be used applied underwater
  • Durable
  • Solvent-resistant
Cons
  • Extremely noticeable shine once dry

3. XUDOAI

If you’ve been on the lookout for the epoxy to repair your toilet tank, then look no further because the XUDOAI EK4157 is perfect for it. Its strong and tough formula will quickly and permanently repair any ceramic, glass, wooden, metallic, or plastic items you might have.

Sale
Epoxy Putty Stick, XUDOAI Moldable Epoxy Glue for Crack...
  • ✔Use to seal pipes, fix leaks in tanks and drains, repair...
  • ✔Bonds to a range of materials, including metal, wood,...

Why Did We Like It?

We found this product pretty unique because it comes as a putty that needs to be cut and kneaded. Once you slice apart a piece and knead it for a minute, its color changes to a greenish-gray. Now, you have about five minutes to make the repairs and seal cracks on your toilet tank, which is sufficient because the epoxy mix has great elasticity.

After 24 hours, the epoxy putty is fully cured and is ready to be applied with a putty knife. You can drill it, sand it like wood, and even paint it since it has a greenish finish. This makes the adhesive ideal for repairing home appliances, as well as maintaining electrical devices.

Lastly, the adhesive is resistant to both heat and water, which means you can use it for outdoor projects as well. It’s also incredibly resistant to any form of shrinkage, corrosion, or scratching.

51bAU8LUAbL. SL500

What Could’ve Been Better

Despite an impressive performance, we did notice one major flaw about this putty. Upon curing, it has a green-gray color that stands out on a toilet tank, which is usually white. So, if you want that the putty should blend in with the tank, you’ll have to put in extra effort to paint it. This can become a hassle if there are multiple or thin cracks.

Pros
  • Super elastic
  • Water-resistant
  • Can tolerate high temperatures
  • Resistant to shrinking, scratches, and corrosion
  • Can be drilled, sanded, and painted
Cons
  • The color of the cured putty doesn’t blend well with a toilet tank

4. PC Products PC-11

This two-part epoxy is the perfect solution for those who need a way to undertake porcelain toilet repair such that it lasts. The product has a volume of 60 ml and comes in a soothing off-white color that blends perfectly with tank lids. Moreover, it is packaged neatly in an easy-to-use tube.

PC-Products PC-11 Epoxy Adhesive Paste, Two-Part Marine...
  • Two-part marine epoxy adhesive paste bonds materials in dry,...
  • Bonds many materials, including fiberglass, concrete, many...

Why Did We Like It?

If you need to repair a toilet tank crack or scratches on the toilet bowl, you need something that is water-resistant yet effective. The PC Products PC-11 is the right fit for the job because it can be applied in wet, dry, and even underwater areas. Moreover, it is equally resistant to both fresh and saltwater.

In addition to the above, it has a thick consistency, which impressed us because this ensures that the glue won’t sag or drip whether applied horizontally or vertically. What’s more, if you want a white finish to your repair, which is free of cracks and stains, then this adhesive is an ideal pick.

We were also impressed by how fast-acting the epoxy is. It takes just 35 minutes to set, and up to 8-15 hours to cure, which is justified due to the industrial-grade strength of 1710 PSI that it provides.

513KLDFFZpS. SL500

What Could’ve Been Better

When we used the product, it gave perfect results, and we were pleasantly surprised. However, reviews online state that the effectiveness of the product depends from batch to batch, and not all of them cure within the set period, or even after, for that matter. 

Pros
  • Water-resistant
  • Doesn’t sag or drip when applied
  • White finish that blends in with the toilet tank
  • Industrial-grade strength
Cons
  • Effectiveness varies across different batches of the product

5. Pratley

The final entry on our list is the Pratley 85139, a two-part epoxy that can repair your porcelain toilet effectively. It comes in an easy-to-use tube and can also be used with materials like glass, ceramic, stone, and concrete that are commonly found in homes.

Epoxy Glue - Clear 2 Part Glass, Plastic, Jewelry, Ceramic,...
  • Pratley Quickset Glue is an high strength adhesive which...
  • Can be used where a more runny consistency in close matching...

Why Did We Like It?

To begin with, we liked how quickly the glue sets in and dries and also has great adhesive strength. If you’re wondering how to fix your toilet problems without calling upon a professional, then this is a great tool to use. 

Apart from the above, the adhesive can also be used when runny glue is needed for a matching joint. This is a versatile product that can also join together objects made of glass, with the best part being that the epoxy won’t show.

Moving on, this is a waterproof epoxy. Therefore, you can use it for repairing kitchen wares without worrying about water tampering with the bonds. Besides this, we dig the design of the tubes that makes it easy to dispense equal amounts of epoxy constituents. 

51RUfFz5ztL. SL500

What Could’ve Been Better

The adhesive was effective but a hassle to apply properly. We needed to repair fine scratches on our toilet tank and used a brush to apply the glue. Unfortunately, the glue was too tacky to be applied in small amounts, and that’s why we don’t think this epoxy is great for use with smaller cracks.

Pros
  • Fast-setting and drying
  • Versatile
  • Waterproof
  • Elegant bottle design
Cons
  • Glue too tacky to be applied in small amounts

Close up photo of ceramic bowl toilet in domestic bathroom with a box of tools

Epoxy For Toilet Tank Repair Buying Guide

According to us, a number of factors must be kept in mind before getting an effective glue to mend your toilet tank. Toilet tanks are made of porcelain, and from our experience, most kinds of porcelain are waterproof but porous surfaces.

This means that water seeps in through the otherwise glossy surface. That’s why we recommend getting an epoxy that is suitable for a toilet tank and waterproof; otherwise, it’ll be a waste of money and effort!

Apart from that, the other factors that must be considered are:

1. Tensile Strength

Not all manufacturers reveal the tensile strength of the epoxy in the product description or on the label. However, we strongly advise getting an epoxy that is strong with high tensile strength because porcelain objects can have a lot of weight. If you end up getting a glue that doesn’t have much strength, you’ll go back to square one when it falls apart!

This is why we recommend the PC Products PC-11, because of its industrial-grade strength, which will ensure that it works on your toilet tank.

2. Viscosity

The thickness of the epoxy should depend on the kind of repair you’re thinking of carrying out. If you need to fix hairline cracks, we recommend thinner glues that flow and are easier to spread.

However, if you’re trying to fix larger cracks, then a glue that is compatible with wide surfaces and has a thick consistency would be a better pick. This is why we recommend the Pratley because once it is kneaded, it thickens and is perfect to seal cracks that are significant in size.

Plumbing installation. The plumber installs a flush pump in the toilet cistern.

Verdict

Like we mentioned earlier, it is possible to replace a toilet tank that has visible cracks and scratches. However, in our opinion, this is a temporary impediment that can be easily rectified by getting some value pack glue. The glued surface will still be as strong as the rest of the tank.

With this, we’ll be concluding our guide on the best epoxy that you can use for toilet repair. We hope you enjoyed reading it as much as we liked curating it. But before we bid you farewell, we’ll let you know the ones we liked the most.

Overall, the classic J-B Weld tops our list because of its superior functionality. However, the Loctite is also a fantastic option since it is a marine epoxy and is guaranteed to work well with a toilet tank.

With that, we shall take your leave. Fingers crossed, you’ll now be able to pick the best epoxy for your toilet repair.

That’s all for today. Bye!

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