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I've researched radon extensively and honestly it seems to be a government sponsored hoax, but until that's proven I still want to reduce the levels to under 4. Currently the radon reads 26 in crawlspace and it seeps into the home on the East wall the crawlspace shares with the addition to the...

Hi. I live at about 6,000 feet above sea level on a South facing hill. The winters are routinely dry here with mixed snow and sleet that sometimes sticks but oftentimes doesn't. I have a 900 square foot crawlspace on the Southwest corner of the house that has a 4-foot deep crawlspace area. My...

OK thanks. Are you saying I must install the exterior french drains at the same depth as the crawlspace footers else it won't help? I was going to put the bottom gravel about 18" deep at most. Will that not do very much?

I have two major problems I'm looking to solve. I have Radon gas infiltrating from my open crawlspace floor and into my house, and I have water penetrating through my crawlspace walls and/or floor from the yard. I have a natural spring that saturates the soil above (and north) of my house and...