westend wrote:
Sure, pulling a wall section will disclose a leak in that area. The thing is, water can travel across the ceiling and enter a wall space not close to the leak.
I'd suggest you either find a friend with a blower or buy one at Harbor Freight and perform your own test. You may also be able to rent one. All that is needed is some cardboard, some tape, a blower, and a Windex spray bottle of soapy water. It will uncover even the smallest pinhole.
I have a blower. So I guess I need to google how to do it myself. I have all of that to do it.