When the weather turns frigid, Cardinal LoĒ-179™ glass (pronounced low E 179) is the perfect cold remedy. It provides excellent insulating capability by blocking heat loss to the outside and reflecting heat back into the room. What's more, it's the ideal glass for passive solar applications because it allows the winter sun's heat to pass into the home. Regardless of where your home is located, choosing windows that provide you with the highest level of comfort and energy savings year-round is extremely important. And choosing the right glass for your windows is the most important factor in the decision. Go beyond ordinary low-e glass - choose Cardinal LoĒ-179, the ideal choice for passive solar designs.

During cold weather, the insulating effect of your windows has a direct impact on how your rooms feel. Typically, 75% of the exposed surface of a window is glass, and the temperature of the room-side of the glass directly affects the air temperature in the room. Therefore, the better insulated the window glass, the warmer your room will be.

Inside Glass and Outside Temperatures
The table below compares the room-side center of glass temperatures of four different glass types against two different winter conditions.

The superior insulating capability of Cardinal LoĒ-179 is a key factor in the construction of comfortable windows for cold climates. The dramatic comfort improvement from windows with warm glass surfaces also means the relative humidity of the indoor air can be controlled and maintained properly. Proper humidity levels (not too much, not too little) will improve comfort and promote a healthier living environment.

Cardinal LoĒ-179 delivers excellent cold weather performance - its insulation value (U-factor) is a low 0.28, and it lets the winter sun's heat pass into the home. Also, it blocks 76% of the sun's harmful UV rays. While blocking out the cold and UV rays, it lets the daylight stream in - more light than ordinary low-e glass.

Visual Light Transmittance

Cardinal employs a state-of-the-art sputter coating process that is unmatched by any other glass manufacturer. The glass is coated with a microscopically thin, optically transparent layer of silver sandwiched between layers of anti-reflective metal oxide coatings. A protective coating is applied to assure durability and long life. The coating is virtually invisible to the eye - it's just like looking through clear glass.

Think of LoĒ-179 glass as invisible insulation. Although, windows provide beautiful views and wonderful natural light, they can also account for up to 25% of the annual heating cost for a home. In the winter, LoĒ-179 helps homes stay warm and cozy by blocking heat loss to the cold weather outside. At the same time, it brings energy savings by maintaining manageable heating costs.

Additional facts:

• LoĒ-179 is post-temperable
• All residential sizes, thicknesses and shapes offered
• Custom configurations available