J-B Weld WaterWeld, 1 Hour Cure, Epoxy Putty Stick - 2 Pack, Off-White (8277-2)

This product works and is waterproof!!! I made a large fountain out of a ceramic pot and tried two other “waterproof” products that did NOT work. A friend told me to try this and it worked perfectly!!!! LOVE this product! It was easy to use and it is definitely waterproof. If you are building a fountain, I HIGHLY RECOMMEND this product!!!!

I used J-B weld on my pvc joint that was dripping water from my pool heater and it stopped the leakWould definitely recommend

I got this Waterweld to plug some tiny holes in a concrete drinking water cistern. The stuff works great. You need to use it correctly however. My concrete is Spaulding so if the loose gravel is not removed or sealed first, the Waterweld epoxy will incorporate the grit and not stick properly.I've used this stuff on cleaned concrete, PVC, ABS (all under water) and rubber (at the waterline) and it has held more than a year. I used it originally in summer 2023 and didn't use it all. I wrapped the remaining unmixed epoxy in plastic, used the remainder in the summer of 2024 (worked fine). Then bought another 2 pack in the summer of 24.I have more repairs to complete in summer 2025 and have one tube left. I'm sure it'll work fine when I get to the job this coming summer. If I need more, I will definitely buy this type/brand as it's served me well.

First off i do like the product, it seems to work and hold strong. I used it to cement/glue some rocks and wood together in my aquairum. After finishing it seems well put together to where i trust it with fish in the tank. But It was hard to get it to stay on the rock as it didnt want to get off my gloves that i used to apply it. That was the most difficult thing about the process and it easily stains objects like rocks, wood and potentially glass if you accidentally get it on them. I add to use some glue to add moss on the spots i used it and accidentally touched to hide it as it itself and its residue are noticeable.

Works great