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Net loss overnight from windows

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Posted by dpadavona on March 17, 2005, 6:02 am
I have read within this group some people have implemented "window
plugs" to negate net heat loss from windows.

Does anyone use thermal drapes?  And if so, can you recommend a quality
maker or are they pretty much all the same?


Posted by News on March 17, 2005, 9:59 am

That can be a thermal shutter. These can be quite attractive. Internal
shutters were common in British Georgian and Victorian houses.

I can't recommend a make. I know someone who by accident came across the
idea of taking thermal drapes down in summer.  She liked the cosy effect of
the drapes in winter and the openness effect of only Venetian blinds in

Posted by Gary on March 17, 2005, 2:56 pm
 dpadavona@yahoo.com wrote:

We have been using a duofold shade that has a track along the side to
reduce airflow around the edge of the shade.  Information here:

We have had them for about three years, and they seem to be holding up
OK.  I have not attempted to measure how much insulation value they
provide.  The track design does look effective to me.

"Thermal Shutters and Shades" by William Shurcliff is an a VERY good
book on the subject.  Out of print, but available used at Amazon.com
under used books.


Posted by dpadavona on March 17, 2005, 6:31 pm
 Thanks for the replies folks.  I am thinking the best course of action
is to build something similar to what Bill Kreamer recommends with
regard to a window plug.  I should be able to throw that together in an

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