Roof Leaks Only in Wind-Driven Rain: What to Record
When a leak appears only during wind-driven rain, record the conditions that distinguish the leaking storm from storms that caused no visible change. The pattern can help a professional choose where to investigate; it does not prove that one vent, wall, or roofing product is defective.
Keep an event log instead of relying on memory
Record the beginning of rain, when water was first noticed, the room and surface affected, and any available weather-station wind information. Label a weather report as a nearby station reading, not a measurement at your roof. If you do not know the direction, write “unknown.”
| Event detail | Example of a useful entry |
|---|---|
| First symptom | New drip at bedroom ceiling, noticed 9:10 p.m. |
| Weather | Heavy rain reported nearby; direction not observed |
| Visible change | Existing mark extended toward closet wall |
| Comparison | No visible change during the previous light rain |
| Building activity | Window replacement completed before first event |
These are illustrative entries, not evidence from a Texas Professional Roofing customer.
Ask what the pattern does and does not establish
The EPA's moisture-control guidance discusses rain entry and condensation as different moisture-control problems. A rain association is useful, but a complete investigation should still explain the actual route being proposed.
Ask: Which exposed face is being investigated? What evidence connects that face to the interior symptom? Were adjacent wall openings considered? Which suspected areas have not been accessible? These questions keep the weather story from becoming a substitute for inspection.
Compare a dry-weather inspection fairly
A contractor may find a visible defect when conditions are dry. Ask for a photograph and an explanation connecting it to your report. If the cause remains uncertain, ask what additional observation or specialist investigation would narrow it. Do not request an improvised rooftop hose test or stand outdoors during a storm to get a better picture.
A repair proposal should state whether it addresses a documented defect or is an investigative first step. Keep the original event log after work so any recurrence can be described against the same reference points. One storm without a drip is useful follow-up information, but it is not proof against every combination of rain and wind.
Share your event log when arranging roof repair help. Stay away from sagging ceilings and wet electrical fixtures; those conditions require urgent safety assistance rather than continued observation beneath the stain.