I don't trust this stuff, but so far so good. I have had it in the house for about a year, no leaks yet. I used copper for most of the main runs and then this in my branch runs. It is WAY easy to install and certainly easier to install then my rigid copper. Maybe I am just old fashioned and prefer copper, but this stuff is way cheaper to install and way less time and no chance of buring the place down like using copper and soldering the joints.