Sump and radon: airtight cover without losing drainage function
An open sump can be a radon entry route. Coordinate the cover, pump, drainage, alarms and any depressurization system.
Decision triage
VERT / GREEN · JAUNE / YELLOW · ROUGE / RED
What the professional checks
The specialist checks measured radon, cover airtightness, pump/drain function, air paths, depressurization and service access.
Official sources
Sources checked: 2026-08-24
Related path
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