[Greenbuilding] FW: radon question

[Douglas E Lamb]

Mr. Olsen,
 
http://www.radonleaders.org/sites/default/files/HC%20Rn%20Mitigation%20Guide
%20English_0.pdf

This site contains a Canadian Builders Guide to correct radon gas
infiltration in existing residential dwellings. I don't know if it all
applies to your local conditions however, from a cursory scan of the text,
photos, and sketches it looks very much like the info presented in the
"Builders Guide to Cold Climate", but for existing conditions. CABO and The
Ohio Residential Code For One, Two, and Three Family Dwellings both contain
solutions for new construction work only. 

Regards,
Doug Lamb
douglaslamb at columbus.rr.com
 

-----Original Message-----
From: greenbuilding-bounces at lists.bioenergylists.org
[mailto:greenbuilding-bounces at lists.bioenergylists.org] On Behalf Of Douglas
E Lamb
Sent: Monday, April 02, 2012 8:40 PM
To: 'Green Building'; Clarke Olsen
Subject: Re: [Greenbuilding] radon question

Radon Issue:

Mr. Olsen,

In a book titled "Builders Guide to Cold Climates", by Joseph Lstiburek, on
pages 185 thru 189 there are some good representation of the types of method
being used to siphon off radon gas. But again the drawings mostly represent
new construction conditions not existing ones. If I run into any other
documentation expressly depicting existing condition I will forward them to
you. 


Regards,
Doug Lamb
614.323.2005
douglaslamb at columbus.rr.com
 

-----Original Message-----
From: greenbuilding-bounces at lists.bioenergylists.org
[mailto:greenbuilding-bounces at lists.bioenergylists.org] On Behalf Of Clarke
Olsen
Sent: Monday, April 02, 2012 5:23 PM
To: Green Building
Subject: [Greenbuilding] radon question


A ground floor room tests positive for Radon - not high, but more then
nothing.
The floor is 4+" of concrete on 2" ext. styrofoam, on 6 - 8" of gravel.
Big (1/2") joint between foundation and slab is the likely source.
Should I: 
                 a) seal-up the joint with non-shrinking mortar?
                 b) seal it with expanding foam? With caulk?
                 c) arrange some form of fat baseboard vent?

Clarke Olsen
373 route 203
Spencertown, NY 12165
USA
518-392-4640
colsen at fairpoint.net





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