All houses tend to draw soil gas out of the ground to replace air that escapes out of the top whenever the house is warmer than the outside, which is almost every night year-round. Bill Brodhead More Quotes by Bill Brodhead More Quotes From Bill Brodhead Each state radon or radiation department should have a list of qualified contractors, it is usually best to have a local qualified contractor do the work to get better service. Bill Brodhead tech
