Typically one must set back an outside wall about a half inch, then
insulate between the studs, right? But in my house, there is a lot of
plumbing that runs along the outside walls. Is it OK to frame a wall
much further, like about 6" to clear the pipes? How about even more,
like 2', so that the plumbing can be reached if there is leakage? My
basement is huge, so I'm not concerned about losing floor space. What
is the insulation recommendation then? Thanks.