| How Does It Work?
The Warm Window fabric consists of four layers of different fabric
quilted together in 4"-wide lengthwise channels designed
to reduce the flow of energy through your window glass. The
layers are:
- Lining with fabric protector
- High density Dacron Holofil II
- Reflective polyethylene moisture vapor barrier
- Metallicized mylar with air-trapping fibers
The side of the Warm Window shade that faces the room is covered with a decorative
fabric of your choice. Choose a cover fabric that is tightly woven, of light
to medium weight, and made of cotton or a cotton/polyester blend. Fabrics with
fabric protector are an excellent choice for window coverings. Avoid highly
textured or pile fabrics and loosely woven or stretch fabrics. You should also
avoid fabrics with horizontal stripes as they may interfere visually with the
folds in the shade.
The system is complete with a magnetic seal achieved from sewing
magnetic strips into the seams of the shade and affixing magnetic
tape to the window frame or wall.
How does the system work?
Warm Window insulated shades are carefully engineered to combat all four major
causes of heat loss.
- Conduction is reduced by trapped air spaces between the
fibers and layers of insulated fabric.
- Infiltration is reduced by the impervious polyethylene
and tight magnetic edge seal.
- Convection is reduced by the magnetic edge seal.
- Radiation is reduced by the reflective mylar which reflects
radiant heat back into your home and also reflects away solar
gain in summer.
What is R-Value?
The effectiveness of any material in preventing energy from flowing through
it is defined in terms of R-value. The higher the R-value of a given material,
the greater its insulating capacity. This chart illustrates some R-value comparisons.
Insulated shade r-value chart:
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