Basement slab
A suction point through or below the slab can collect soil gas when the sub-slab material communicates effectively.
Local system design and installation
Radon Mitigation Systems for Billings Homes
Get a foundation-specific radon system with planned suction, clean pipe routing, a visible system monitor, and post-mitigation testing.
The system should fit the foundation, not a template
Active soil depressurization uses a fan to create lower pressure beneath the home so soil gas moves toward a suction point and discharge pipe instead of entering occupied space.
We plan the suction points, fan, pipe route, sealing scope, discharge location, electrical work, and monitor around the building. Crawlspaces and mixed foundations receive additional system planning.
Common foundation conditions
Slab-on-grade
The same pressure-field principles apply, but routing and access often differ from a full basement.
Earth-floor crawlspace
A durable membrane can cover exposed soil, with suction applied beneath the sealed membrane.
Mixed foundation
Additions, partial basements, and crawlspaces may act as separate zones and require a combined design.
From test result to verified system
Each action has a clear output. Keep the report and system decisions in writing.
Review the evidence
Start with the full test report, the location tested, and any earlier measurements.
Inspect the building
Map slabs, crawlspaces, additions, sump openings, utilities, mechanical equipment, and possible pipe routes.
Plan the pressure field
We determine the suction approach and use the building layout and diagnostic findings to understand air movement below the foundation.
Install and label
Complete suction points, piping, fan, electrical connection, sealing work, discharge, and system monitor in a serviceable layout.
Verify and document
Check operation, explain the monitor, provide system records, and complete a post-mitigation radon test.
Design decisions worth discussing
Suction points
Sub-slab communication and separate foundation zones influence the number and location.
Pipe routing
Interior and exterior routes affect appearance, weather exposure, service access, and penetrations.
Fan placement
Placement must follow applicable standards and keep the system serviceable.
Sump and drain openings
Openings may need compatible sealed covers while preserving required function and access.
Combustion safety
The design should account for fuel-burning equipment and applicable safety checks.
Noise and vibration
Fan selection, mounts, pipe support, and route can influence sound inside and outside.
What to show an estimator
- The complete radon test report and any older results
- Access to the lowest level, mechanical room, sump, crawlspace, garage, and exterior
- Known additions, foundation transitions, finished walls, or hidden utility chases
- Electrical-panel location and any relevant recent electrical work
- Your priorities for appearance, noise, future finishing, and service access
Living with an active system
- Learn the normal reading or state of the system monitor and check it regularly.
- Keep the fan running as designed and contact a qualified professional when a warning device changes or noise develops.
- Retest after installation and periodically thereafter to verify that radon remains reduced.
- Keep the test reports, system diagram, labels, operating instructions, and warranty information supplied with the project.
Frequently asked questions
Questions homeowners ask
Straight answers about the work, timing, and what to expect at your property.
Does sealing foundation cracks solve radon by itself?
EPA guidance describes sealing as a common supporting step but generally not the only reduction method. A complete design often controls soil gas pressure as well.
How many suction points will a home need?
That cannot be determined from the radon number alone. Foundation zones, footprint, material beneath the slab, additions, and diagnostic findings all matter.
Can a crawlspace be mitigated?
Yes. A common approach covers exposed soil with a durable sealed membrane and applies suction beneath it. The actual assembly must fit the crawlspace and applicable standards.
How do I know the system is working?
The system monitor indicates operating pressure or status, but it does not measure indoor radon. A radon test verifies the concentration after installation and during periodic checks.
Bring the right details to the estimate
Share the test result, foundation type, ZIP code, and deadline so our team can review a useful project summary.