The Inside Scoop at

R-Values for Shades

Posted on: November 11, 2011

With the weather turning colder — even traditionally warm areas of the U.S. have experienced cooler weather lately, thoughts have been turning to windows.

How much cooler-air leaks through your windows can be the difference between comfort and turning up the heat. Or, as I was reminded yesterday by a co-worker: turning ON the heat.

Here’s a truly lovely room:

I can image curling up in one of these chairs, with the throw over the knees, that good book in hand. What happens, though, when the sun stops shining, the cool night descends and you still want to keep on reading?? Pull down your shades and you may even be able to throw off that throw!

So, how about those R-Values?

I copy some information that is found in fuller form on our website: PROVEN SAVINGS ON COOLING AND HEATING COSTS

Whenever I speak with customers, I give the R-values for “shade alone”. Everyone seems to know R-values of their windows; to that number add these R-values for the Double cell fabric:

  • Double Cell Light Filtering fabric – 2.8 R-value
  • Double Cell Black Out fabric – 4.0 R-value

Or, add these values for the Single cell fabric:

  • Single Cell Light Filtering fabric – 1.6 R-value
  • Single Cell Black Out fabric – 2.5 R-value

And how do Cellular Window Shades compare to other window treatments? We’ve got information on that too:

Looking at just R-values (our online comparison charts Energy Efficiency of Cellular Shades versus Other Window Treatments encompasses also cleanability, ease of operation, and overall product ratings),

  • 1-inch Mini blinds or Vertical Blinds – 2.3 R-value
  • Pleated Shades – 2.5 R-value
  • “Crystalpleat” Facets – 3.3 R-value
  • Applause or Duette Classic – 3.5 R-value

It might interest you, with the entry of two Hunter Douglas products (the Applause and Duette), to read this recent one-page article in This Old House magazine.

What about the ubiquitous Window Quilt? How does the Cellular Window Shade stack up? We’ve some GREAT information on all aspects of the Window Quilt versus the Cellular Shade so do read the website for further information, here I’ll just comment on the R-value:

Data includes the window this time, so the bulky Window Quilt is projected to have an R-value of 7.14 depending on the window. The comparable test with the Cellular Window Shade found the R-value to be nearly neck-and-near: R-value of 6.8, likewise depending on window glazing.

If you want to better ever those values, check out literature on the Energy-Savings Side Tracks, the ComforTrack-Plus system!

With Side Tracks, you gain more light-blocking AND also these greater R-values:

  • Double Cell Light Filtering fabric – 2.8 R-value —> 3.3 R-value + your window’s R-value
  • Double Cell Black Out fabric – 4.0 R-value —> 4.7 R-value + your window’s R-value

Now THAT is “Value” and true “bang for your buck”.

And, for the 2011 Tax Year: These shades qualify for Federal Energy Tax Credit!
(more on that subject next)

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