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

JB Weld continues to be my go-to for those difficult epoxy and 'poor man's welding' jobs. This product worked exactly as described and appears to be the same high-quality that it has always been. It cured quickly but I waited 24 hours, just to be safe. It fixed a leaking U pipe under the sink that is 40 years old as parts are very difficult to come by. This is a great patch until I replace everything under the sink in 1 big job. It looks likes grey cured putty but I care more about function than appearance on an item like this. It applied well, adhered quickly, and dried within an hour. Its not super cheap but its still a solid value given that it works. A+

This was so easy to use and worked really well! I am not even close to being a plumber, but this sealed my leak up. Used on old copper pipe in my basement. Drying/curing time was fast and the leak stopped almost immediately. There was enough to seal around my pipe with some left over. Not sure it would be enough to do 2 full fixes but a good amount.

They have worked really nice, I am surprised! I used lots of other technics I was about to give up but this worked. It was easy to apply totally surprised me to hold until that pressure.

I ordered 4 of these. One didn't cure. I kneaded them all the same, excessively, just in case. One of the batches still had putty consistency 3 days later. I had to scrape it off, reclean the surface, and use another tube. The second tube cured properly, so all is good. I don't know why the one batch failed me. Just be aware it can happen, and you'll have to redo your work. As for the other 3, they all cured rock hard, as expected. I am happy with the performance of it, that's why it still gets 4 stars. One star off for one tube wasted.

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!!!!

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.

I've used J-B Weld Water-Weld sticks a few times and purchased them twice on Amazon and also at a local store. This stuff is a great problem solver. It cures quickly and when fully cured is quite solid and hard. Most of my issues involved PVC pipe to which this adheres well and seals watertight, even with little to none of the recommended surface preparation. It also appears to adhere decently to concrete and wood. I had trouble getting it to adhere to ABS (black) DWV pipe but won't downrate it for that as ABS is not included in the long list of materials for which the packaging states compatibility. I will buy again when I next need this type of product. It's good to keep it around.

I have been using J-B Weld products for over 30years with complete satisfaction. I needed it to replace some of my swimming pool tiles underwater. I have worked with lots of putty, and this is not a good buy. Hard to work with and to make stick... I will use the packages I have left when I lower the pool level. Hopefully I will get better results.

Amazing performance underwater. I've not found anything comparable

I used J-B weld on my pvc joint that was dripping water from my pool heater and it stopped the leak Would 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.

A very useful product for filling those knicks and scratches on boat undersides. However kneeding the putty to properly release the curing catalyst is messy and if not done right you won't have a solid repair. I found extended time kneeding the putty sends it into a rapid curing mode making filling a void challenging but not kneeding the putty sufficiently substantially extends curing time or even improper curing leaving a soft repair.

Works great for small leaks that are under pressure. Quick dry and cure time, just follow instructions and make sure to mold it to the fitting