350 Parts Per Million is the figure we are trying to achieve to reach the carbon reduction goals.  Despite a whole set of regulations in our industry not many people know the goal that has been set or why and simply adhere to the regulations as they are introduced.  The rate at which these standards are being changed will have to increace quite dramatically to reach the figures the building industry has been set.  If you have any thoughts on this please start a discussion on the Facade Community linked in forum.