Turn observations into a concise timeline with evidence and unanswered questions.
Set the reference
Photograph the whole location and a close detail. Include a fixed reference and record what lies above, below, behind or outside.
Capture the trigger
Note weather, water use, occupancy and equipment state. A useful guide connects the observation to the condition that produced it.
Use the right check
Apply the linked non-destructive check and compare with a nearby normal reference.
Choose the next branch
Follow the most plausible cause dossier, but preserve alternatives until a distinguishing clue appears.
Close the loop
After correction, repeat the same observation under similar conditions and store the result in the house log.