I have a 3x4 foot shower stall in an old cabin that was installed about 4 years ago. There is a leak just behind the shower head (when the valve is turned on, water sprays out from that area as well as coming out the showerhead). What is the likely cause? A soldered connection or a threaded connection? Also, do I have to destroy the stall to get at the problem? The hole for the shower head "neck" is too small to see through, let alone fix anything through.
Any advice will be appreciated.