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Old 10-23-10, 04:03 PM   #6
Ryland
Master EcoRenovator
 
Join Date: Mar 2009
Location: Western Wisconsin.
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My parents have a sun room about the same size and they have window quilts that cover 3 windows at a time, 1/3 of the number of shades to close, they have a layer of silver mylar between the layers of quilt batting giving it I think an R value of R6-8 if I remember correctly.
Alot of the heat loss from windows is the radiant heat.
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