Orléans has a large stock of 1970s and 1980s homes with older slabs, floor drains and unsealed cracks, all common radon entry points.
Service in English or French on request.
Long-term 91-day tests in the heating season, plus short tests for real estate deadlines.
A fan and sealed pipe that draw radon from under the slab and vent it outside, installed in about a day.
Airtight sump lids, sealed floor cracks and membrane over dirt crawlspaces.
A short check after install and a long-term test the next heating season to confirm the result.