I have a PEX system at home and love it. My friend needs to run some lins to a new bathroom, but he is on a very limited budget due to lots of renovations going on. I priced out building a manifold out of galvanized or CPVC ... it would be extremely cheap to do so because I could just add one tee/ball valve combination at a time (I would probably start with two on both the hot and cold manifolds).
I have never heard of anyone building a manifold like this so I am wondering if I am missing something?
If I do build it, should I use galvanized, CPVC, or copper? CPVC would obviously be the easiest.
Is this a bad idea or a good idea? Why?