I think you will find that BRE has the answers to your questions.
From: Contaminated Land Management Discussion List [mailto:[log in to unmask]] On Behalf Of Nik Reynolds
Sent: 13 December 2011 11:04
To: [log in to unmask]
Subject: Tuesday Query
Dear All,
I'm not sure if this has been addressed before, but heregoes:
How relevant is the stack effect withmodern houses? Modern houses are to be built to be 'air tight' which reduces the drafts etc. and also to have significant thicknesses of insulation installed within the ground floor slab design in accordance with the Code for Sustainable Building and changes to Building Regulations Part L. I appreciate with houses pre 2002 where insulation was not present below concrete ground floor slabs, and the drafty floor boards of the pre 1970's the stack effect does play a significant risk with the migration of ground gases, but does it still have the potential to significantly draw ground gases?
Have there been any studies to date on trial properties (properties built either specifically for trials or using fallow properties - unsold properties/properties in cleared pathfinder areas) to see what the potential for migration of groundgases into properties is?
Hope this isn't a daft question, but it has been a discussion we had this morning.
Regards
Nik
Mr N Reynolds
BSc(Hons), MSc, CGeol, CSci, FGS, MIEnvSc, EurGeol
Senior Environmental Geologist
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