Before any check
Photograph Walls, windows and door openings, record the trigger and preserve the original condition. Confirm that access is safe and that the check will not disturb electrical equipment, hazardous materials, structural support or contaminated water.
Check the trigger
Repeat only one ordinary operating or weather-linked variable where safe. For this facet, the useful question is whether How wind-driven rain can cross cladding joints or opening transitions and travel behind finishes. changes in a predictable way when that variable changes.
Check the route
Inspect accessible transitions through ceiling, upper wall, roof edge or opening without cutting, drilling, removing guards or opening energized or regulated assemblies. Note both positive clues and intact boundaries.
Use a reference condition
Compare an unaffected room, component, time period or weather event using the same method. A control prevents normal variation from being mistaken for evidence of failure.
Record the result so it can be repeated
- Record wind direction and rainfall timing
- Compare the first damp edge with roof and wall geometry
- Check whether water use can reproduce the symptom
- Use the same camera position, scale and measurement location.
- Write down what would count as no change before beginning the check.
Stop boundary
Do not enter an unsafe roof, open energized assemblies or disturb damaged materials. Active dripping near electricity, sagging finishes or structural movement requires prompt professional assessment. The source set for this guide includes 4 official records selected for this path. They provide general technical and safety context; they do not determine the condition of a particular house.
Primary references for this topic family
These references ground the general building-science or safety context. They do not diagnose a specific house, replace local requirements or certify a repair.
