[Greenbuilding] R20 window insulation?

[Bob Waldrop]

----- Original Message ----- 
From: nick pine
>What's your R20 window insulation?

Four pieces of 3/4 inch Rmaxx, gorilla taped together, wrapped in aluminum 
foil, and then covered (for aesthetics) in either green felt or canvas slip 
covers.  They range in size depending on the windows, and including several 
large 4 x 8 panels that we use over the windows of the sunspace at night 
during the winter and during the day in the summer.

>... we came up with the present plan (which included replacing the south 
>wall of our utility room with glass to add some
> passive solar) and implemented it.

>Have you considered turning this 24/7 heat-losing passive solar glass into 
>an air heater with little heat loss at night >and on cloudy days?

I have been reading this forum for some time and your frequent contributions 
on the subject, but the math generally escapes me and it hasn't been clear 
exactly what you would advocate in this situation.  It is a space about 20' 
long, and 6' wide, with doors at either end (no east or west windows).  The 
windows are stock double paned patio doors, plus two double hung windows for 
summer ventilation.  I am always interested in anything that will help us 
stay warm in the winter for less effort.

Bob Waldrop, OKC



Nick



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