Start with what it resembles.
Choose the closest visual fingerprint. Then add location, timing and weather in the Clue Engine. Resemblance alone never confirms a cause.
Straight hairline joint crack
A fine straight line may follow a board joint or material transition.
Match this pattern →Diagonal crack from an opening
Diagonal geometry at doors or windows deserves change tracking.
Match this pattern →Stepped masonry crack
A stair-step path follows mortar joints and may reflect movement.
Match this pattern →