Dear Editor,

I have been wondering for a long time how a gas with a vapour density higher than air manages to rise through it.
I have just finished a project for a London local authority that made us put a polythene gas-proof membrane below a ventilated floor to stop CO2 rising from the ground into the building!

Best wishes,

R Reynolds

This entry was posted on Monday, May 28th, 2007 at 2:27 pm and is filed under Environment. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.