Active: underfloor extraction

RADON REMEDIATION METHODS PASSIVE METHODS ACTIVE METHODS Barriers Natural airflow Sump systems Reduce pressure Underfloor extraction Sump systems Underfloor ventilation Cellar ventillation Positive pressure fans Raise pressure No fans or pumps

Reduce underfloor pressure; Active underfloor radon extraction

Floor type: Suspended floor

Sometimes extracting air from the sub-floor cavity (active underfloor radon extraction) has better results than ventilating the airspace, depending on the location. The radon systems used for under-floor ventilation can be used to do this. However, ventilating a sub-floor space is always the starting point for radon remediation of sub-floor voids.

Radon fan and vent