Radon Mitigation done by professionals looks expensive.
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Could a DIYer get the same end results?
In some homes that are prone to basement flooding, installing an air-tight seal in the
basement floor is kinda out of the question.
It seems like transporting the radioactive air outdoors, might be the only option in my case.
Since my floor slab has many small cracks, and there are four (4) large sump pump holes.
I've been testing my basement. We've added three new sump pump holes.
I just finished a 48 hour test in a new sump hole, expecting a reading of 2 or 3, but got
39 !!
The highest I've ever seen was a 6 from a friend's basement. He lives on a granite hill.
I wanted worse case, so I had the sensor unit a few inches above the floor, right above the hole.
I've started another 48 hour test with the unit (per the manual) about 2 feet above the hole.
If it's still high, (above 3) I'm going to have to start planning some basement ventilation..
This evening, just for fun, I checked around the basement with a geiger counter.. Just in case.
Nothing but normal back-ground clicks..