Applicability:
Any house with a concrete slab floor on the
lowest level (basement or first floor) where the primary radon
source is below the house (virtually all houses with elevated
radon level).
Principle of Operation:
A negative pressure field is created below
the slab preventing the entry of radon gas into the house.
System Description:
One or more penetrations are made in the
slab and a small pit is created beneath each penetration. PVC
duct pipe is connected to the slab penetration(s) and routed
unobtrusively (through closets, plumbing chases or other
unexposed areas) to the suction side of the fan. PVC pipe is
then connected to the pressure side of the fan and routed
through the roof using a standard roof flange and waterproof
sealants. The radon gas is discharged safely above the roof The
PVC vent pipe protrudes slightly above the roof and has the same
appearance as a standard plumbing vent pipe.
