The client had noticed deterioration around a shower-side door frame roughly two years earlier โ visible wood rot and a crack running toward the ceiling. No caulking, plumbing, or reconstruction work had been done since, and the assumption going in was that this was probably just a caulking or sealing issue.
On assessment day, we didn't take that assumption at face value. We used a second, unaffected bathroom in the same home as a comparative dry reference โ a real baseline for what "normal" looks like in that specific house, not a generic number. The affected bathroom showed elevated meter response concentrated at the shower base and edge, the deteriorated door-frame area, and the corner crack โ but returned to the dry reference condition within about 12-24 inches. This wasn't a whole-floor problem. It was localized, and now there was data proving exactly how localized.
We were direct about what we didn't know: because the shower hadn't been used recently, the assessment couldn't confirm an active plumbing failure. Root cause stayed officially undetermined at this stage โ we don't assert conclusions the instruments don't support.