VERT / GREEN
Measure/document moisture and cracks before moisture-sensitive finishes.
Slab-on-grade: moisture, vapour, radon and flooring
Coordinate soil, drainage, insulation, under-slab membrane, radon, cracks and concrete moisture before flooring.
Important: this tool helps decide what to verify; it does not replace calculations, permits or professional design where required.
JAUNE / YELLOW
An impermeable finish over a wet slab can trap or redirect moisture; the under-slab detail matters.
ROUGE / RED
Free water, heave, active crack, high radon or unknown under-slab membrane in a major project: diagnose before covering.
Indicative triage
Useful tools and data
- Concrete moisture test
- Crack/elevation map
- Under-slab detail if available
What the professional checks
- Assess moisture and movement
- Confirm membrane/drainage/radon provisions
- Validate flooring compatibility
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.
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