I'm gonna have to "discuss" this with the archy, who's placed plumbing fixtures on the outside walls ('cause the bath is prettier that way, I guess). Down in Georgia we use 2 x 4 exterior walls. This house is getting Icynene insulation, and I especially don't want to interrupt that good insulation with plumbing.
I don't have the education to argue with the archy, but I want the plumbing fixtures moved to interior walls.
Am I just going on outdated notions? Am I all wet?! If I have a valid point, how do I present my case?