Stittsville's newer subdivisions, Fairwinds, Jackson Trails and the Westwood area, have newer basements, and some builders left a capped rough-in pipe for radon under the slab.
If your builder left a capped rough-in, a fan system can often be finished faster and for less.
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.