Green Building Forum - Proximity of radon barrier sump outflow and stove air inlet duct Tue, 19 Dec 2023 04:41:08 +0000 http://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 Proximity of radon barrier sump outflow and stove air inlet duct http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16162&Focus=274348#Comment_274348 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16162&Focus=274348#Comment_274348 Tue, 25 Jun 2019 20:21:24 +0100 johnericsutton
In any case, I think it very unlikely that any radon which is drawn up the air intake poses any risk to health as it will be emitted from the building in due course (for a second time!) through the chimney.]]>
Proximity of radon barrier sump outflow and stove air inlet duct http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16162&Focus=274357#Comment_274357 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16162&Focus=274357#Comment_274357 Wed, 26 Jun 2019 00:10:27 +0100 gyrogear
https://www.ukradon.org/information/buildingregs

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Proximity of radon barrier sump outflow and stove air inlet duct http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16162&Focus=274361#Comment_274361 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16162&Focus=274361#Comment_274361 Wed, 26 Jun 2019 10:38:38 +0100 djh https://www.ukradon.org/cms/assets/gfx/content/resource_2722cs33267e5dc5.pdf

There's nothing definitive about building regs that I can see. There are statements like away from doors, windows and ventilation grilles, but no indication of distances or legal requirements. The general thrust seems to be to design the system so that there's no risk even if the duct has leaks, so making your stove pipework effectively part of this circuit sounds like a bad idea. It may be better to construct a separate channel for the radon duct, even if that means slightly more groundworks.]]>
Proximity of radon barrier sump outflow and stove air inlet duct http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16162&Focus=274387#Comment_274387 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16162&Focus=274387#Comment_274387 Fri, 28 Jun 2019 09:53:47 +0100 Mike1 Posted By: johnericsuttonI think it very unlikely that any radon which is drawn up the air intake poses any risk to health as it will be emitted from the building in due course (for a second time!) through the chimney.
The idea of the Radon barrier is to prevent the radon entering the building - so you'd be drawing it in for the first time, not the second. Radon has a half live of 3.8 days, so although it decays rapidly, it is more likely to do so in your house, where it decays though radioactive polonium and bismuth to lead.

I'd definitely want the air intake well away from the radon duct - as in several meters away and downwind. Though I'd not choose a wood burner due to the various downsides discussed elsewhere on this forum.]]>