VERT / GREEN
Document stains, condensation, icicles and ice-dam history.
Cathedral ceiling and compact roof: air, vapour and moisture
Coordinate airtightness, insulation, vent channel or unvented assembly, penetrations and drying in a hard-to-access cavity.
Important: this tool helps decide what to verify; it does not replace calculations, permits or professional design where required.
JAUNE / YELLOW
Adding insulation without fixing air leakage can cool the roof and increase condensation risk.
ROUGE / RED
Wet/decayed wood, blocked ventilation, unknown assembly or planned foam against roof deck: design the whole strategy professionally.
Indicative triage
Useful tools and data
- Roof section
- Wood moisture measurement
- Thermal/visual inspection as conditions allow
What the professional checks
- Identify actual assembly
- Define air/vapour/venting strategy
- Verify drying and penetrations
Official sources
Sources checked / sources vérifiées: 2026-08-22
Related path
Continue with the right tools
These links connect this page to the next useful checks and decisions without repeating the full content.
Start from a symptomOrganize plausible causes, observations, urgency and the right professional.Open →Track water useCompare meter readings and flag unusual changes.Open →Review water resilienceConnect flooding, drainage and future events to building adaptations.Open →Score home resiliencePrioritize water, outages, fire, climate, health and records.Open →Plan site, drainage and utilitiesCoordinate access, water, sewer, wells, septic, grading and site constraints.Open →
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