> I thought so too, Jeff!  I just set up 72 hives with a 1" board of the
> "blueboard" that you linked to below the cover to see how they do.

Is the blueboard in direct contact with the bees?

Michael Palmer said he uses a 1 in Styrofoam for upper insulation but puts 
the foam above an inner cover.

I am testing some of David Vanderdusen's (miteaway II) pillows this year. 
About the same insulation factor plus absorbs moisture. many say absorbing 
the moisture is as important as the R factor.

bob 

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