suggestions for repair of 1/2" copper line -see photo
Discovered a leak, but had trouble finding the source. Seeping slowly from a wall shared with a shower. Manifold was dry. Crawled through my attic to find a 1/2" copper supply line leaking. It is part of a complex structure including a water hammer and distribution to an exterior faucet and a toilet. The leak would appear to be right where it goes through a 2x8 "header" (between the joists and apparently there to keep the pipe from moving).
Would guess acids in the wood help corrode the copper pipe.
Pipe at lower right is 3/4 supply, one going up is air hammer. Flashlight is pointed at point where 1/2" line goes through the wood to the shower below.
Looks like I will have to cut out the wood and see how far down the damage goes. Looks difficult to sweat on a fitting. The attic is hot (South Florida) even late at night so I want to spend a minimal amount of time working up there. It is also very tight. Joist to roof at the pipe is maybe 24". Doubt I could even get a plumber to crawl up there.
Any suggestions on the most expeditious repair would be appreciated.