Sub-Slab Radon Mitigation is for properties where radon enters through the basement slab. We explain the practical options and recommend the approach that fits the building, budget, and timeline. The right radon system depends on slab thickness, aggregate under slab, and sump pit.
Reasons to schedule this service
This service may be the right fit when one of these situations sounds familiar:
- radon enters through the basement slab
- a sump and drain tile system need coordination
- a finished basement needs careful routing
What matters for Madison properties
Madison radon mitigation depends on Wisconsin radon risk, basement style, sump and drain tile details, crawl-space areas, and real-estate or remodel timing. For sub-slab radon mitigation, the estimate should account for slab thickness, aggregate under slab, and sump pit, cleanup, timing, and the condition of the existing area.
What affects the estimate
- slab thickness
- aggregate under slab
- sump pit
- finished walls
- exterior route
How the work usually goes
Most projects follow a simple path from review and prep through installation, cleanup, and final walkthrough.
- Test Result Review: Review the radon test result, test date, foundation layout, basement use, and any real-estate deadline.
- Foundation And Sump Check: Check slab areas, sump pits, drain tile, crawl spaces, pipe routes, fan locations, and discharge options.
- System Design Planning: Plan the mitigation system, sealing details, electrical needs, fan placement, and retest timing.
- Pipe Fan And Sealing Work: Install or repair the pipe, fan, suction point, sump cover, crawl-space barrier, or sealing work.
- Retest And Maintenance Guidance: Review manometer readings, labels, maintenance notes, and when the home should be tested again.
