Crawl Space Radon Mitigation in Pueblo
Sub-membrane depressurization for homes on dirt or gravel crawl spaces.
Call (719) 355-3733
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Sub-membrane depressurization for homes on dirt or gravel crawl spaces.
Call (719) 355-3733
Tell us what's going on. We answer most messages the same day.
A farmhouse out on St. Charles Mesa called us last spring: charcoal kit said 15.5, and the house sat on a dirt crawl space that had been quietly feeding soil gas into the floorboards since the Eisenhower administration. Sub-slab suction was useless, there's no slab. This is what sub-membrane depressurization is for.
The recipe: we lay a heavy reinforced polyethylene membrane across the entire crawl space floor, overlap and tape every seam, seal the membrane to the stem walls and around every pier, and run a perforated collection pipe underneath it. That pipe ties into a fan and discharges above the roof, the same as any of our standard mitigation systems. The membrane turns your crawl space floor into a lid, and the fan keeps the space under that lid at negative pressure. Radon never gets a vote.
Sealing a crawl space this way also cuts ground moisture, which is why the same house usually loses that musty smell within a couple of weeks. Wood floors over the crawl stop cupping. Dust mites hate it. We're a radon company, not a mold company, but customers mention the smell disappearing more than they mention the radon number, because one of those you can actually notice.
Older homes around Beulah, Rye, and the Mesa are the classic candidates, along with plenty of pre-war houses in Pueblo proper where an addition sits on a crawl next to the original basement. Combination foundations are fine: we treat the crawl with a membrane and the slab side with a standard suction point, one fan, one system, one number on the retest.
Usually $1,400 to $2,200 in the Pueblo area, depending on square footage, how many piers and obstructions the membrane has to seal around, and honestly, how much stuff is stored down there. Clear the crawl space before we quote and you'll get a better number.
Close cousins. Encapsulation companies seal crawl spaces for moisture; we seal them to a mitigation standard and put the membrane under active suction, which is what actually moves radon numbers. If you want the moisture benefits too, you get most of them free with our install.
We've done 14. Danny drew the short straw on that one. Yes.
Got a crawl space and a high radon number? Call (719) 355-3733. Wear old clothes if you want to look at it with us, we mean that.