Finish crack vs settlement
Geometry, material and change over time separate cosmetic finish movement from structural movement.
╱Drywall joint movement
VS△Differential settlement
Typical location
Board seams, opening corners and trim transitions
Foundations, masonry, openings and connected finishes
Timing fingerprint
Seasonal or after normal framing movement
Progressive or following ground and drainage changes
Visible or audible pattern
Fine crack following a straight joint or corner
Diagonal or stepped cracks, sticking openings and level change
Best separating check
Track width and confirm it is confined to finish layers
Measure change over time and assess drainage and structure
Evidence that weakens it
Growing masonry or foundation crack
Stable hairline finish crack only
The rule
Use this comparison in Clue Engine →Do not repair the resemblance. Verify the pathway.
Color and shape can overlap. Timing, location and a repeatable check usually carry more diagnostic weight.
