If your home has tested positive for elevated radon levels, the good news is that radon can be effectively reduced. There are several proven methods to lower indoor radon concentrations, ranging from simple ventilation improvements to professional mitigation systems.
Step 1: Confirm Your Radon Level
Before taking action, make sure you have a reliable radon reading. A continuous monitor running for at least 30 days will give you a more accurate long-term average than a short-term test. If your level is consistently at or above 4 pCi/L, it's time to act.
DIY Measures (For Mild Elevation)
If your radon level is between 2 and 4 pCi/L, some simple steps may help reduce it:
- Increase ventilation — Open windows and use fans to bring in fresh air and dilute radon concentrations.
- Seal visible cracks — Use caulk or sealant to close cracks in your foundation floor and walls. This won't eliminate radon but can reduce entry points.
- Seal sump pits — Cover open sump pits with an airtight lid.
- Improve crawl space ventilation — If your home has a crawl space, adding vents or a vapor barrier can help.
Note: DIY measures alone are rarely sufficient for levels above 4 pCi/L. Professional mitigation is recommended.
Professional Radon Mitigation
For levels at or above 4 pCi/L, the most effective solution is a professionally installed radon mitigation system. The most common type is sub-slab depressurization (SSD):
- A hole is drilled through the foundation slab.
- A PVC pipe is inserted and connected to a continuously running fan.
- The fan draws radon from beneath the slab and vents it safely outside.
- This creates negative pressure under the slab, preventing radon from entering.
SSD systems can reduce radon levels by up to 99% in most homes and typically cost between $800 and $2,500 to install.
After Mitigation: Keep Monitoring
After a mitigation system is installed, retest your home to confirm the system is working. Continue monitoring with a continuous radon detector to ensure levels remain low over time — especially after seasonal changes or renovations.
Monitor Before and After Mitigation
The GZAIR Radon Detector helps you track radon levels before, during, and after mitigation — giving you confidence that your home is truly protected.
0 comments