Just For Copper JFCP052 JFCP0 52 50 Gram Solderless Copper Bonding, No Size, No Color

All joints held after an hour of running. I'm happy

I use this a lot when i renovate bathroom, this product works properly for small jobs.

I gave Just For Copper a shot because the idea of no flame for redoing my radiant heat system made sense for where I was working. I put all the lines together and initially had 1 leak which was expected for how that joint went together. I fixed it and there were no leaks for about a week. Now 2 weeks later nearly half of the joints have started seeping. I was careful to sand everything very well and not wipe the sanding dust. I was not stingy with the product and generally had plenty of excess upon installation. It looked great for a week, now I wish I had just soldered it. Now it will take me an additional 1-2 days to repair all the leaks that have started. I would not recommend this product to anyone, and I will never use it again. The worst part, they only way to fix a leak with this stuff is to take it apart and try again, at least with solder you can work on it assembled.

Not good for all applications. The bond has no strength!

This works as advertised, just follow the directions and you will get the perfect results

Great product

works as easy as it says, no problems with joints

Failed in 3 out of 4 joints done per specs. Instructions do not mention temperature vs. cure time. Suggest you don't use at less than 75 degrees F. If you do, wait extra long or warm up the joints.