I'm about to start pulling the old galanized pipe in my 40 year old home. I plan to remove only the main lines and leave the vertical sections that lead to fixtures.
Connecting those vertical lines to PEX seems straightforward. What I'm most concerned with is the quality of hte Galvanized that's there. If I start unscrewing, I understand I run great risk of damaging the pipe that's there to the point that I won't be able to screw on PVC connectors for the PEX, is it possible to rethread these galvanized pipes without having to remove them?
Also, it does seem possible to knock out a section of the wall in order to run PEX all the way up...but how do I attach PEX so it's sturdy like the old galvenized was? Does it nail to a 2/4 with a clamp or soemthing?