⌂HouseSymptomsHOUSE INTELLIGENCE

12 complete symptom paths42 guides and 60 questions in each 1,460 Grade A articlesOne searchable, connected knowledge library 140 official sourcesEvidence context with explicit limits

Failure Fingerprint

Failed exterior sealant

A perimeter joint has split, detached or exceeded its movement capacity.

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Typical location

Perimeter joints and material transitions

Timing fingerprint

Rain, especially wind-driven

Visible or audible pattern

Localized entry beside cracked or separated joint

Best separating check

Inspect joint continuity without assuming sealant is the only defense

Evidence that weakens this cause

Water starts well above the joint

Do not confuse it with

Open a side-by-side comparison

Window flashing failure vs sealant failureBoth can wet openings, but entry location and wall drainage behavior differ.→