Water can enter through roofs, flashing, windows, doors, wall assemblies, penetrations, balconies, sealants, drains, or storm-created openings. Coverage often turns on whether the loss was sudden or repeated, the condition that allowed entry, and which resulting damage the policy treats separately.
The objective is to preserve an accurate record before water dries, components are discarded, buildings are repaired, financial records become difficult to reconstruct, or the parties take fixed positions without complete information.
Build a room-by-room and event-by-event chronology
Record the first observation, weather, exact location, odor, visible water, sounds, photographs, reports, and later spread. Include earlier leaks or repairs rather than omitting them.
For commercial property, collect tenant complaints, work orders, access records, and maintenance communications.
Use coordinated maps
Mark exterior openings, roof drains, walls, windows, penetrations, and transitions on one diagram and interior stains, readings, demolition, and damaged contents on another.
Cross-reference every photograph and moisture reading to a date and location.
Document drying and demolition as evidence
Preserve daily readings, equipment logs, containment, removed material, photographs of concealed layers, and invoices.
Before discarding important components, give interested parties a reasonable inspection opportunity when feasible and retain representative samples safely.
Evidence checklist
- First-observed date, weather, location, and progression timeline
- Moisture maps, thermal images, meter readings, and drying logs
- Exterior elevations, roof plans, openings, drains, and interior damage maps
- Controlled testing protocols, photographs, videos, and findings
- Prior leak, repair, warranty, maintenance, and complaint records
- Removed materials, laboratory results, estimates, and insurer reports
Read the complete policy and preserve post-loss compliance
Notice, protection of property, inventories, records, inspections, sworn statements, examinations, proof of loss, and other duties vary. Keep requests and responses in writing, document reasonable mitigation, and obtain the complete policy and endorsements before assuming what is or is not covered.
Related claim guide
Water Intrusion Claims
Read the full cause-of-loss, scope, evidence, and frequently asked questions page for this property claim.
View the property-claim guide
About the author
Thomas J. Nessler
Thomas is a partner at Nessler & Associates and represents policyholders in residential and commercial first-party property-insurance disputes.