contractor trying to screw me on the change order for this pex repipe job

Had a rough one yesterday with a GC who won't sign off on the change order for rerouting the PEX lines around that new bathroom addition. I used Uponor PEX-A like always, but he claims it wasn't in the original scope even though the plans changed mid-job. Sent him the photos and the marked-up blueprints, but he's dragging his feet. Been doing this 15 years and this BS never gets easier. Anyone got a solid template for these plumbing contracts to avoid this crap? Saw a similar rant in Plumbers United group last week.

man i feel your pain, GCs always try to weasel out of extras on plumbing work.

use a simple addendum form from AIA, fill it out on the spot with sigs from everyone. keeps it clean and enforceable. i add a line for uponor specifics too.

haha just tell him the PEX ghosts will haunt his next pour if he doesnt pay up.

fuckin GCs ruining the whole industry with their cheap ass tactics, we should all start blacklisting the worst ones.