Radon In Your Home

how radon spreads

Most indoor radon comes into a building from the soil or the rock beneath it. Radon and other gases rise through the soil and get trapped under the building. The trapped gases build up pressure. Air pressure inside homes is usually lower than the pressure in the soil. Therefore, the higher pressure under the building forces gases though floors and walls and right into the building. Most of the radon gas moves through cracks and other floor openings. Once inside the building, the radon can become trapped and concentrated.

 

Openings which commonly allow easy flow of the gases into your home:

*Cracks in floors and walls

*Gaps in suspended floors

*Openings around sump pumps and drains

*Cavities in foundations below grading

*Gaps around utility penetrations (pipes and wires)

*Crawl spaces that open directly into the building

 

Radon may also be dissolved in water, particularly well water. After coming from a faucet, about one ten thousandth of the radon in water is typically released into the air. The more radon there is in the water, the more it can contribute to the indoor radon level. Trace amounts of uranium are sometimes incorporated into materials used in construction. These include, but are not limited to concrete, brick, granite, and drywall. Though these materials have the potential to produce radon, they are rarely the main cause of an elevated radon level in a building. Outdoor air that is drawn into a building can also contribute to the indoor radon level.

The average outdoor air level is about 0.4 pCi/L, but it can be higher in some areas. While radon problems may be more common in some geographic areas, any home may have an elevated radon level. New and old homes, well-sealed and drafty homes, and homes with or without basements can have a problem.

Radon levels can be higher in homes that are well insulated, tightly sealed, and/or built on uranium-rich soil. Because of their closeness to the ground, basement and first floors typically have the highest radon levels. All homes below the third floor of a multifamily building are particularly at risk.

 

Share:  Add to Facebook Tweet This Add to Delicious Submit to Digg Stumble This

Here is what my clients have to say about my home inspection services:

Press F5 (on your keyboard) for additional testimonials

 

Dear David,

I just wanted to write a quick thank-you for the professional and informative job that you did at my home inspection on Monday. As a first time home buyer I was incredibly nervous going into the inspection not knowing what to expect - what should I be asking? What should I be looking for? it was all very overwhelming. However, after the first 15 minutes of the inspection, you quickly put all of my fears to rest!

The way that you took the time to point out and explain to me everything that you were looking for, as well as all of the helpful suggestions that you so freely gave out instantly, had put my mind at ease. I was able to feel that I was in good hands and knew that I had a “Professional” doing the job. This was solidified for me at the end of the inspection when you went over your extensive report with me, item by item ensuring that I fully understood what was there.

Your professionalism and expertise was so greatly appreciated. If ever anyone asks for a recommendation please feel free to give them my name, it would be my pleasure to help put another home buyer’s worried mind to ease by letting them know that with Massachusetts Home Inspections, they can count on a professional job well done.

With Kind Regards,

Karen S.

                                               

   massachusetts state seal     Certified Professional Home Inspector     certified master inspector seal     indoor air certification

massachusetts seal     $10,000 Honor Guarantee, Backed by InterNACHI    

Last updated on  Feb 27, 2013