In article , Doctor Evil wrote:
Lord Hall, 12" is not extreme. In fact, there is no such thing
as extreme in insulation.

Beyond a certain thickness of insulation the energy used to make and
deliver it will exceed the amount of energy it ever saves.

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Tony Bryer SDA UK 'Software to build on' http://www.sda.co.uk
Free SEDBUK boiler database browser http://www.sda.co.uk/qsedbuk.htm