I will be replacing my exiting lines in the spring. Replacing CPVC with copper. The home was built in late 1920's. My Question is where would be the best location to run the new lines? I have three options. 1-in an insulated exterior wall, 2-in an unheated 28 in crawlspace, 3-in athe unheated attic. The attic would be the easiest place to work as it is 5' tall, but a leak could cause major damage to the new drywall ceilings that will be installed. The crawlspace is hard to work in, and would probably need to insulated, as would the attic. The exterior wall would have to be notched to get the copper into the wall (6" studs). would this also need to be insulated? If a professional was doing this job where would you run the lines?
This will all be done during a remodel when the walls will be stripped to the studs, (new elect, insulation, etc.).
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