Sandcrab: "Sealed and Ventilated" - What does that mean?The contractor laid perforated pipes on top of the dirt, hooked up to a tiny fan that blows 27/7. Over that was laid heavy-duty sealed tarps. This not only vents the radon out, but also the rising dampness that would otherwise form mildew under the tarp.
We got our results back a week or two ago. Average indoor levels are 1.3. Recommended action if it gets to 4.0 or higher. Our reading was 1.7...so just barely above average but nothing we have to do anything about.
Quote from: J. Grouchy on February 26, 2012, 12:00 pmWe got our results back a week or two ago. Average indoor levels are 1.3. Recommended action if it gets to 4.0 or higher. Our reading was 1.7...so just barely above average but nothing we have to do anything about.Has anyone mentioned that one of the most common sources of radon inside homes is the fancy granite countertops everyone seems to love installing?