Glossary term
Air-tight layer intended to limit soil gas entering through the floor construction; joints and penetrations are critical details.
BASEMENT ATLAS
Source types stay separate: technical and authority-adjacent sources support rules and risk topics, while project sources document practical experience.
Radon in basements. Start by documenting existing and planned floor build-up, pipe and cable penetrations and actual air-change path. The purpose is to understand the building condition and constraints before choosing products, finishes or a work sequence.
BASEMENT ATLAS
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