"George E. Cawthon" wrote in message
...
wrote:
George,
I generally agree with you.
However, I hear from some some researchers that is is often the case
that there are connecting paths up through the house structure.

YFH might want to look at the Building Science Corporation web site.

TB


True, with balloon framing used in old houses. I
would worry more about fires than Radon with such
construction.

Not true with modern house construction.


Holes for water vent, gas furnace and water heater chimneys go from basement
to roof.