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From: smh@mhuxl.UUCP (henning)
Newsgroups: net.consumers
Subject: Re: Energy efficient window coverings.
Message-ID: <433@mhuxl.UUCP>
Date: Mon, 6-Jan-86 22:36:59 EST
Article-I.D.: mhuxl.433
Posted: Mon Jan  6 22:36:59 1986
Date-Received: Wed, 8-Jan-86 04:58:36 EST
References: <1198@mtuxo.UUCP>
Organization: AT&T Bell Laboratories, Murray Hill
Lines: 15

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From the keys of Steve Henning, AT&T Bell Labs, Reading, PA mhuxl!smh

> Given this set up, does anyone have any recommendations as to the type
> of window coverings we should use. To maximise heat retention in Winter
> and minimize heat absorption in the summer. Looks are important ie we're
> not wanting to put up silver and black coverings.

Thermal indoor shutter: R-6.0 (FTR shutters) to R-2.5 (Wallrich)
Roller shade: R-2.5 (Appropriate Technology) to R-1.5 (Solar Energy Components)
Storm Windows: R-1.1 (sheet construction) to R-0.9 (film construction)
Draperies and liners: R-0.9
Standard window shades: R-0.6

Note the higher the R-value the better.  Source, Consumer Reports.