I'm adding an additional 2 car garage that is attached to my current 2 car garage. I'm trying to run a water line in to the new garage so I can wash my car in the new garage. The water line will need to be run from my home and then around the current garage and into the new garage. My contractor is recommending I run the lines exposed on the inside of the garage wall. He thinks this gives it less chance to freeze and exposes any leaks if any before they cause a problem. My new garage will have a heater but my current garage does not. I really don't think i'll like the look of having the water line visible. How have other people done it? Is it behind the sheetrock?

