A familiar moment
The spreading ceiling mark with no obvious source
You are tracing a leak elsewhere when a homeowner rings about a mark growing beneath an upstairs bathroom. Ziverly can capture where the sign appears, when it changes, nearby rooms or services, any visible water, pressure loss, previous repairs and access. It does not diagnose the source, tell the caller to open the building fabric or leave uncontrolled flooding or water near electrics as a routine callback.