Russell griffiths Posted May 31, 2018 Share Posted May 31, 2018 Hi does anybody know how much air has to flow through an air brick I’m looking at using a round vent in stead of rectangular, and want to make sure it has the same flow rate if bco ask. Ta very much. Link to comment Share on other sites More sharing options...
PeterW Posted May 31, 2018 Share Posted May 31, 2018 @Russell griffiths you may find this useful https://www.bre.co.uk/filelibrary/radon/56998_jRadonSht2PP.pdf 1500mm2 per metre of wall according to this Link to comment Share on other sites More sharing options...
Russell griffiths Posted May 31, 2018 Author Share Posted May 31, 2018 Spot on @PeterW ??? Link to comment Share on other sites More sharing options...
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