I'm using copper piping — about 5 feet total — externally, to make it easier to water the grass. In addition to copper pipes, the connectors and valves are brass (Sharkbite).
Should I prime/paint those metals, or will they be fine (not leaking) for many years as is, even if copper becomes green with patina?
I'm a bit concerned, that, if I undertake the painting once, I'll commit to redoing it again and again every few years…
Best Answer
I would not paint the copper. If you ever need to repair it, paint would be one more problem on making a good leak free connection. If you want to cover the pipe, use foam. Remember, copper water supply’s are quite common direct burial, the sun and elements won’t hurt it. I suggest insulation, if in a location that the temps drop below 27°F.
(Yes water freezes at 32°, but it takes time, in most locations 27°F is where damage to pipes starts as it takes ~4 hours at that temp to freeze your pipe.)