Hi All:
I moved into a new house that I built a couple of months ago. I bought a safety siren radon meter and let it do it's thing for about a month now. My readings are in the 5.6 area.
My basement is approximately 1800 sq ft., before the masons poured the slab I put two 3" perforated pipes into the gravel base in case we had a radon issue. I also had the plumber run the radon vent pipe from the roof down to the basement so I can tie them together. A couple of questions:
- How reliable/accurate are the readings from these ~$100 radon units?
- Is there a formula that tells me how many CFM I need to draw based on square footage, current radon level, etc.?
- Should I just seal off the sump pit, or run it into the other two 3" PVC lines running to the roof? Is a piece of lexan cut to fit and some polyurethane caulk good enough?
- Given the current state of the basement (two radon pipes sticking out of the slab with a shoddy little cap on each, plus an open sump pit), should I try piping everything without the fan to see how the levels change?
Thanks,
-Marc