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WaterWeld White Epoxy Adhesive

Ratings & Reviews for J-B WELD WaterWeld White Epoxy Adhesive

4.2
1032
Review
 4.2 out of 5
1034 Reviews


83% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

The epoxy putty is effective for repairing a variety of leaks and cracks, even in wet or underwater applications. Many users find it easy to use, sets quickly, and forms a strong, durable bond. It works well on plumbing, pool, and boat repairs, as well as sealing gaps in different materials. However, some users experienced issues with the repair failing or cracking over time, likely due to improper surface preparation or not following instructions closely. Overall, most customers are satisfied with the product's performance and consider it a convenient and cost-effective solution for many household and DIY repair needs.

Customer review summary generated by AI, including incentivized reviews.
1034 Customer Reviews

Fixed fiberglass crack

Would Recommend

I used for a fiberglass pool. It worked well repairing a small crack underwater. You have to get the amount you need, let is harden a little for 5 minutes then start putting it on. It did harden under water after 30 mins. Very moldable and can be sticky at first but becomes like play-do. Any one without experience can use this.

August 4, 2026
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This stuff works!

Would Recommend

We've had a few tubes of this stuff on the shelf and never used it until last week. I finally found a need for the waterweld, so I cut a bit off and started balling it up in my fingers until the consistency smoothed out, and I put it on the tank. Only issue is I was in a rush, and didn't get rubbers on, so I've been wearing this stuff on the tips of my fingers, now for week, slowly chipping it off. My only real complaint is the smell. My hands smell like me and my ex linked up again, so definite...

July 27, 2026

From JBWeld.com

Sealed Pin Hole

I found a pin hole in my vinyl siding and needed something to patch it. It took very little to do the job. I am thoroughly satisfied with the ease of use and the finished product.

July 17, 2026
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Fixed underwater

Would Recommend

Used to repair a crack in our salt water pool steps. Repaired under water. Has held well for over a week. Fingers crossed it will hold thru the season

July 16, 2026
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Great product for many uses at a good price

Would Recommend

My friend put some on a tooth that had a crack in it and hurt really really bad. He had to let it sit for a little while before applying it but once he got it on his tooth he felt better! I guess it kept the nerve from being exposed or getting food on it. It did come out on its own after a few days so he's going to get some more and do it again but his friend that told him to do it stayed in for like three years! It's the craziest thing I ever heard but hey it might be useful info for somebody, ...

July 8, 2026

From JBWeld.com

Seals under water if needed

This 2 part putty in 1 stick worked perfectly in sealing cracks at the bottom of a pool skimmer. Simple to cut off what you need, knead into a blended portion and fill the cracked area. Cures in 5 hrs for a leak- tight seal.

June 26, 2026
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Worked very well, stopped active leak

Would Recommend

Sealed an active leak in PVC. Super easy to use. Only complaint is it has quite an odor to it, though that disappears once it cures (like an hour or something) so it’s not really a big deal. I was able to seal around a 3” pipe and a 2.5” pipe with one stick no problem. Definitely doing to get more just to keep at the house/garage

June 19, 2026
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It worked

Would Recommend

It worked

June 19, 2026
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It’s the perfect product for weeds and wild grass

It’s the perfect product to seal holes in metal containers.

June 19, 2026
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Worked Perfectly

Would Recommend

Worked better than expected! Sealed up leak on PVC pipe & saved a lot of money !!! Cheaper than a plumbers bill.

June 19, 2026
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Would Not Recommend

I followed all instructions. After an hour I turned the water back on, and there is water now spewing from three different sections on the putty.

June 18, 2026
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Works under water

Worked well sealed leak in fish pond

June 17, 2026
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