Sub-Slab vs. Crawlspace Radon Systems: Which Is Right for You?
When it comes to radon mitigation, one size doesn’t fit all. The type of system you need depends largely on your home’s foundation — and whether you have a basement (slab-on-grade) or a crawlspace makes a big difference.
At Radon Systems LLC, we’re committed to helping homeowners make informed decisions to protect their families from the dangers of radon gas. In this post, we’ll break down the two most common radon mitigation solutions: Sub-Slab Depressurization (SSD) and Crawl Space Mitigation Systems — so you can better understand which one is right for your home.
Sub-Slab Depressurization (SSD)
Best for: Homes with basements or slab-on-grade foundations
How It Works:
A small hole is drilled into the concrete slab (usually in the basement or lowest level), and a pipe is inserted beneath the slab. A specially designed fan draws radon gas from the soil and vents it safely above the roofline, where it disperses harmlessly into the air.
Benefits:
- Highly effective and widely used
- Long-term, low-maintenance solution
- Discreet installation (usually in a utility room or corner)
Ideal If You Have:
- A full basement
- A slab-on-grade foundation
- High radon levels confirmed by testing
- Crawlspace Radon Mitigation
Best for: Homes with exposed dirt or gravel crawl spaces
How It Works:
Because crawlspaces allow radon to seep in through the soil, this system involves covering the crawlspace floor with a high-density plastic vapor barrier. A vent pipe and fan are then installed to draw radon from beneath the barrier and safely exhaust it outside.
Benefits:
- Seals exposed soil and blocks radon entry
- Improves air quality and moisture control
- Customizable for vented or unvented crawlspaces
Ideal If You Have:
- A vented or unvented crawlspace
- Exposed soil under the home
- Elevated radon test results from the main floor
Not sure what kind of system you need? That’s where we come in. Our certified radon technicians at Radon Systems LLC will evaluate your home’s layout, conduct thorough radon testing, and recommend the most effective solution.
Why Choose Radon Systems LLC?
- Over 35 years of industry expertise
- NRPP-certified technicians
- Custom-designed systems tailored to your home
- Lifetime warranties on most mitigation systems
- Fast, friendly, and affordable service
Ready to Breathe Easier?
Don’t leave your family’s health to chance. Whether you have a basement, crawlspace, or both — we have the right radon solution for you.
