Originally Posted by
Flip Flop Rider
gotta let em breathe
Is Vapor barrier, Perspiration is a way to lose excess heat, by evaporation,
Blocking that perspiration with a vapor barrier stops the cooling evaporation
and also blocks the insulation from holding the wet condensed perspiration vapor,
so when really cold your insulating layer retains it's loft.
an aluminized vapor barrier also reflects heat back in... your space blanket function..
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