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<blockquote data-quote="Allen" data-source="post: 197588" data-attributes="member: 389">slicktrick, Sunlight does not &quot;dissolve&quot; radon.Radon is one of the products of radioactive decay from both uranium and thorium.&nbsp; It is also a noble gas which means it doesn't really like to react with much else. Radon is itself radioactive as it emits alpha radiation. Alpha waves are short waves that you have to pretty much be in contact with for them to harm you, certainly less than a couple centimeters.&nbsp; That's why it's a lung cancer risk.The basic formula for getting radon in your home goes something like this.1.&nbsp; Build your house over sedimentary rocks, or glacial till derived from sedimentary rocks.2.&nbsp; Radioactive decay of the uranium produces radon, a gas.3.&nbsp; Radon gas is fairly soluble in water, so it travels with the water pretty well but is always susceptible to degassing out of the water if there's a lowering of pressure.&nbsp; 4.&nbsp; The radon gas moves up through natural cracks, pore space, animal burrows, etc in the ground until it reaches your basement. Concrete is not very air tight in the first place, so it tends to easily find its way through concrete and into your home's lower level.&nbsp; And that's not necessarily a basement.5. Easiest way to lower radon levels is to bring in more fresh air. Best way to lower radon levels is to have a collection system of some kind that puts a very slight vacuum on the soil under your basement and vents it outside. Often there are small electric fans inline with a pvc pipe in a home's utility room. Other things a person can do is seal up the sump pump, etc.</blockquote>

[QUOTE="Allen, post: 197588, member: 389"] slicktrick, Sunlight does not "dissolve" radon. Radon is one of the products of radioactive decay from both uranium and thorium. It is also a noble gas which means it doesn't really like to react with much else. Radon is itself radioactive as it emits alpha radiation. Alpha waves are short waves that you have to pretty much be in contact with for them to harm you, certainly less than a couple centimeters. That's why it's a lung cancer risk. The basic formula for getting radon in your home goes something like this. 1. Build your house over sedimentary rocks, or glacial till derived from sedimentary rocks. 2. Radioactive decay of the uranium produces radon, a gas. 3. Radon gas is fairly soluble in water, so it travels with the water pretty well but is always susceptible to degassing out of the water if there's a lowering of pressure. 4. The radon gas moves up through natural cracks, pore space, animal burrows, etc in the ground until it reaches your basement. Concrete is not very air tight in the first place, so it tends to easily find its way through concrete and into your home's lower level. And that's not necessarily a basement. 5. Easiest way to lower radon levels is to bring in more fresh air. Best way to lower radon levels is to have a collection system of some kind that puts a very slight vacuum on the soil under your basement and vents it outside. Often there are small electric fans inline with a pvc pipe in a home's utility room. Other things a person can do is seal up the sump pump, etc. [/QUOTE]

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