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Radon Found In Home?

Radon Found In Home?

Old Jan 8th 2015, 10:57 pm
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Question Radon Found In Home?

We are planning to buy a home and Radon has been tested and found to have a level of 6.7 from a recommended 4 or below!

What are the implications of this? Should we go ahead with the purchase or is it something we need to rethink about?
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Old Jan 8th 2015, 11:07 pm
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Default Re: Radon Found In Home?

Yes, rethink.

There is a slightly increased health risk but you might have a harder time selling that house later on if it has a high radon reading.

Home Buyer's and Seller's Guide to Radon | Radon | US EPA
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Old Jan 8th 2015, 11:19 pm
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Default Re: Radon Found In Home?

My house tested positive for radon and we had the seller install a mitigator. Lived here happily over 16 years. Radon is common in CT.
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Old Jan 8th 2015, 11:22 pm
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Old Jan 8th 2015, 11:24 pm
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Default Re: Radon Found In Home?

Originally Posted by Nutmegger View Post
My house tested positive for radon and we had the seller install a mitigator. Lived here happily over 16 years. Radon is common in CT.
That's reassuring..
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Old Jan 8th 2015, 11:25 pm
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Old Jan 8th 2015, 11:45 pm
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Default Re: Radon Found In Home?

Originally Posted by brit_usa2014 View Post
There may be a radon map of your state in the following link.

Maps of Radon Levels for Various States
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Old Jan 9th 2015, 12:05 am
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Default Re: Radon Found In Home?

Originally Posted by brit_usa2014 View Post
We are planning to buy a home and Radon has been tested and found to have a level of 6.7 from a recommended 4 or below!

What are the implications of this? Should we go ahead with the purchase or is it something we need to rethink about?
If the house has a crawlspace or basement, improved ventilation is adequate mitigation because the radon seeps out of the ground.

If any part of the basement of crawlspace or basement has a dirt floor it should be covered over with a concrete floor, again to reduce radon seepage.

Last edited by Pulaski; Jan 9th 2015 at 12:33 am.
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Old Jan 9th 2015, 12:27 am
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Default Re: Radon Found In Home?

Originally Posted by Pulaski View Post
If the house has a crawlspace or basement, improved ventilation is adequate mitigation because radon seeps out of the ground.

If any part of the basement of crawlspace or basement has a dirt floor it should be covered over with a concrete floor, again to reduce radon seepage.
As always, thank you for your insight, much appreciated!
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Old Jan 9th 2015, 12:31 am
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Default Re: Radon Found In Home?

Originally Posted by brit_usa2014 View Post
As always, thank you for your insight, much appreciated!
You're welcome.
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Old Jan 9th 2015, 10:55 am
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Default Re: Radon Found In Home?

Originally Posted by Nutmegger View Post
My house tested positive for radon and we had the seller install a mitigator. Lived here happily over 16 years. Radon is common in CT.
This.
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Old Jan 9th 2015, 5:13 pm
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Default Re: Radon Found In Home?

and if that house has radon - it could be that all the houses in the area on the same geological base have same amounts of issues - unless they have already been mitigated in ways as described above.

our last house we sold was one we built in ohio and the survey showed elevated radon levels (i cant thint that it was that high but dont remember). we just had to have a company do their mitigation thing as a condition of the sale - was under 1000 bucks (might have even been south of 500) and buyers were fine with that.
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Old Jan 9th 2015, 5:28 pm
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Default Re: Radon Found In Home?

Originally Posted by MsElui View Post
and if that house has radon - it could be that all the houses in the area on the same geological base have same amounts of issues - unless they have already been mitigated in ways as described above.

our last house we sold was one we built in ohio and the survey showed elevated radon levels (i cant thint that it was that high but dont remember). we just had to have a company do their mitigation thing as a condition of the sale - was under 1000 bucks (might have even been south of 500) and buyers were fine with that.
Some places just stick a fan in and call it good. Couple of hundred bucks.
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Old Jan 9th 2015, 5:41 pm
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Default Re: Radon Found In Home?

When they do the radon test the house is often left alone, doors and windows closed for 48 hrs or so. The then lack of any airflow lets the radon build up inside. The house we bought tested to 27 pCi/l in 48 hours. As part of the sale we had the seller install a mitigation system ($350). After a re-test following installation the system appeared to have brought the levels back down to under 1 pCi/l

I tested the house again a year or so later, with the mitigation fan off and doors and windows being opened and the house used 'normally'. Reading was still at 1 pCi/l after 4 days.
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Old Jan 9th 2015, 5:45 pm
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Default Re: Radon Found In Home?

Originally Posted by Nutek View Post
Some places just stick a fan in and call it good. Couple of hundred bucks.
To be effective the fan is supposed draw air from the aggregate under the foundation slab, assuming there is a foundation slab.
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