Mitigation begins with a free home consultation by a C-NRPP certified professional to determine the best radon reduction system to install. Radon entry points are located and sealed.
A location is determined for coring a 5″ hole in basement slab for diagnostic testing.
A flow meter station (PVC pipe with diaphragm), attached to shop vac and micromanometer, is inserted in floor hole.
A field extension test is performed to determine fan size required for the sub-slab depressurization system.
Two 5 gallon buckets of gravel are then dug out of cored hole to create a sump pit.
A hole is drilled through the exterior wall for radon fan exhaust pipe.
PVC piping with radon fan is installed and properly labelled with U-tube manometer indicating system is operational.
Heat recovery ventilation systems are cleaned and balanced by certified residential mechanical ventilation technicians to insure home is receiving optimum fresh air supply.
A short-term 72 hour radon test is started 12 hours after the sub-slab depressurization system is operational to confirm radon level has been successfully reduced below Health Canada’s 200 Bq/m3 Action Level. A post-mitigation report is given to client to discuss installation details and radon test results.