Despite a small percentage of situations that may pose some unforeseen unique challenge, it's fairly safe to say "All radon problems are solvable".
Homes with a properly installed system are typically far lower in Radon levels than are the neighboring homes.
Systems should come with a written contract and guarantee to lower levels or installer will come back. We Do!
The area I live and work in is Colorado Springs / El Paso County. A good majority of homes, buildings and schools here are elevated in this region.
With proper testing and diagnostics with specialized equipment, a good system can be installed to safely and quietly lower levels of Radon.
The last few we have done lowered the levels below 1 pci/l. I try not to guarantee that I can get levels this low... the proof is in the pudding. :-)
With a region like ours, I think the mitigation system is a plus, you are buying a home that should have the lowest levels of this odorless, tasteless invisible product that poses the largest risk of lung cancer in non-smokers.
All homes should be tested during a resale or similar Real Estate transaction. Just to be sure.
Systems that are installed and working correctly should still be checked every 2 years or at times of building alteration, addition etc.
Tim - Fri Oct 17 2008, 21:12