12 complete symptom paths42 guides and 60 questions in each1,460 Grade A articlesOne searchable, connected knowledge library140 official sourcesEvidence context with explicit limits
Failure Fingerprint

Ground slopes toward foundation

Surface water is directed toward rather than away from the building.

Act soonurgency profile
Typical location

Exterior perimeter and basement wall-floor junction

Timing fingerprint

Heavy rain and snowmelt

Visible or audible pattern

Repeated perimeter water loading and low-wall dampness

Best separating check

Observe runoff and levels during rain

Evidence that weakens this cause

Leak occurs only from an interior fixture