I'm adding a small bathroom to my detached garage. I've read lots on home run vs trunk and branch, I've got a pretty good idea of the pros and cons of each.
Issue for me is, I've got 1/2in copper already in the garage as the starting point. It is what it is, we work with what we've got. But I know I'll need to make the most of the pressure I get from it.
Many have commented that home run systems, while providing more stable pressure when multiple fixtures are in use (which will never be my use case), they can provide less pressure at individual fixtures. Is this just because home run systems use smaller pipes and they expect you'll be running farther through this smaller pipe? (As opposed to a short branch close to a larger trunk?)
This is going to be a small (5x7) bathroom with a small water heater, a shower, one sink, and a toilet. So there is not going to be much pipe being used in either configuration, and the trunk or manifold supply is going to have to be 1/2in either way. Will one configuration give me better water pressure at the shower?