Drainage maintenance
State what this option assumes, what should change first and what evidence would weaken it.
← All decision comparisonsDECISION COMPARISON
Clean drainage or investigate the envelope?
Compare overflow, grading, flashing, penetrations and interior timing before treating a rain-linked symptom as a single maintenance issue.
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Envelope investigation
Keep this route available until repeated evidence separates it from the first option.
THE EVIDENCE ROUTE
Read. Compare. Choose the smallest safe move.
Decision comparisonClean drainage or investigate the envelope? — an evidence-first decision map
Compare overflow, grading, flashing, penetrations and interior timing before treating a rain-linked symptom as a single maintenance issue. This guide compares both routes, defines safe evidence, stop boundaries and the next professional handoff.
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