In my last few blogs I mentioned that one of the side
benefits of installing a moisture level system to control floor slab heave is
that it also controls radon gas. So what exactly they mean by that?
First of all what is radon gas? It is a radioactive gas that
comes from the decay of uranium. As uranium decays it goes through a number of
elements as it loses protons and neutrons from uranium to radium to radon to
polonium. As it reaches the radon stage it is a gas that is still radioactive
that has a half-life of 3 to 4 days. If the gas is breathed in it can stick to
your lungs and as it goes through a further decay process it can eject alpha
particles that can cause lung damage and lung cancer. As houses become more tightly
sealed for energy conservation purposes the natural result is to create
negative pressure that inevitably brings gases into the house from below the
surface.
Is is a common occurrence? As a matter of fact lung cancer
is the leading cause of all deaths by cancer in the United States more than
breast cancer more than prostate cancer or any other type of cancer. The EPA
estimates that from radon gas there are 21,000 deaths a year in the United
States. More than is killed by drunk driving. But because it it occurs on an
individual basis it is seldom talked about in the news.
So how common is this in Arizona? The EPA places Arizona in
the middle category of three categories in terms of occurrence. Here in the
desert climates the average home has a one in 10 chance of having high radon
levels. If you live in the higher elevations of Arizona your chances may
increase to one in three.
The Surgeon General of the United States has recommended
that every home be tested for radon. This is a fairly easy and inexpensive
process. We are now certified to offer this testing in your home. Below you will find a map showing the Radon zones found in the United States.

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