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Specifications
When selecting an energy efficient window treatment, primary importance should be given to its R-factor (resistance to heat/air conditioning) loss of transfer.
The following table gives general ratings for different window covering materials. The higher the R factor, the better the resistance to heat and air conditioning loss.
| Window
Treatments |
1 layer glass
at R value = .89 |
2 layers of glass
at R value= .81 |
| Aluminum blinds |
1.20 |
3.01 |
| Pleated shades (varies by fabric) |
1.20 to 1.30 |
3.01 to 3.11 |
| Vertical blinds (varies by material - freehanging
fabrics will insulate less than solid vinyls or fabrics with vinyl
groovers) |
1.0 to 3.0 |
2.81 to 4.81 |
| Cellular shades (varies by fabric and number of
cells- dual or triple celled shades will insulate more than single celled shades) |
1.34 to 3.0+ |
3.15 to 4.81+ |
| Wood blinds |
1.4 |
3.2 |
| Louvered shutters |
1.5 |
3.4 |
The region’s premier provider of custom window and door coverings.
Absolutely nothing enhances the beauty & value
of your
home or business like custom window coverings
from Aloha Blinds & Designs!
(c) 2006
ALOHA BLINDS & DESIGNS, INC. All rights reserved.
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