Crawl Space Radon
Crawl Space Radon Mitigation in Longmont, CO
Radon systems built for dirt-floor crawl spaces and mixed foundations.
Crawl Space Radon
Radon systems built for dirt-floor crawl spaces and mixed foundations.
Crawl spaces with a bare dirt floor let soil gas straight into the space under your home, and from there into the rooms above. They need a different approach from a basement.
The standard fix is sub-membrane depressurization. A heavy plastic gas-retarder membrane is laid over the dirt, sealed to the foundation walls and piers, and suction is drawn from underneath, then vented above the roofline.
The membrane also cuts the moisture, musty smell and dust that come up from bare soil, which is a side benefit many homeowners notice right away. Call (720) 790-3231 for a free estimate.
More material and more sealing than a slab system, which is why it costs more.
Heavy plastic sheeting over the whole dirt floor.
Seams overlapped and sealed, edges fastened to the walls and piers.
A pipe and fan draw gas from below the sheet.
Homes with a crawl space and a basement or slab often need both tied into one system.
| Situation | Typical Range |
|---|---|
| Crawl space only | $2,000 – $3,000 |
| Crawl space plus basement or slab | $2,200 – $4,000 |
Membrane area, access and sealing labor drive the price. You get a written estimate first.
Thicker membranes hold up when you store things or crawl through for maintenance.
The same membrane that stops radon also cuts moisture from the soil.
Call (720) 790-3231 for a crawl space radon estimate in Longmont.
Free — no obligations