On Wed, 18 Nov 2009 16:01:50 +0000, Bryan O'Gorman
<[log in to unmask]> wrote:
You'll need to check the gauge of the membrane and the type of floor
slab. Radon resistant membranes start at 1200g, which is comparable
to CIRIA C665 Situation 2 for cast in situ floor slabs. However you
would require 2000g for Beam and Block flooring, to be compliant with
Ciria C665 Characteristic Situation 2.
Given that the increased membrane gauge is required for a less rigid
floor (to allow for movement etc) I'd expect the radon measures would
also need to account for this and be similarly specified?
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