LoĒ-180 Glass

CARDINAL CG COMPANY

Passive Solar Control
Glass

Glass that turns cold climates
into comfortable spaces

When the weather turns frigid, Cardinal LoĒ-180™ glass is the perfect cold remedy. It keeps homes warm and comfortable by blocking heat loss to the outside and letting the sun’s heat stream in. With a glass U-Factor of just 0.26 and an SHGC of 0.69, LoĒ-180 is the ideal product for passive solar applications.

When it’s freezing outside, it’s

cozy inside.

During cold weather, the insulating effect of your windows has a direct impact on how your rooms feel. A large portion 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. The better insulated the window glass, the warmer your room will be.

Inside Glass and Outside
Temperatures

IG Type and Coating
Double Pane, Clear
Ordinary low-e, Clear
LoĒ-180, Clear (Argon Fill)

Inside Glass Temperature :

°F

°C

-20 °F Very Cold Outside	-30 °C Very Cold Outside	20 °F Cold Outside	-10 °C Very Cold Outside
37°F	2°C	51°F	9°C
46°F	7°C	57°F	13°C
51°F	60°F	10°C	15°C

The superior insulating capability of Cardinal LoĒ-180 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.

Blocks out the cold, lets in the solar warmth.

Cardinal LoĒ-180 delivers outstanding cold weather performance – its insulation value is excellent with a low 0.26 U-Factor. And with an SHGC of 0.69, it lets the winter sun’s heat pass into the home. It also blocks 71 percent 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.

Our unique coating
stops thermal loss

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.

Glass Performance

IG Type and Coating
Double Pane, Clear
Ordinary low-e, Clear
LoĒ-180, Clear

Visible Light

Trans-mittance	External Reflectance	Internal Reflectance
82%	15%	15%
76%	17%	17%
79%	15%	15%

Fade Transmission

UV	ISO
58%	75%
50%	68%
29%	63%

Solar

Heat Gain Coefficient
0.78
0.72
0.68

U-Factor :

IP

SI

Air Fill	Argon Fill
0.48	2.73	0.46	2.58
0.34	1.93	0.30	1.70
0.31	1.74	0.26	1.48

Definitions

Note:
All values calculated using Window 7.8. Emittance of ordinary (pyrolitic) low-E is 0.16.

Solar Heat Gain Coefficient – (SHGC):
The amount of solar radiation that enters a building as heat. The lower the number, the better the glazing is at preventing solar gain.

Fading Transmission:
The UV Transmittance is determined as an average for wavelengths 300 -380 nm. ISO is the weighted average for wavelengths 300 – 700 nm (based on CIE 89/3). This region includes all of the ultraviolet energy and part of the visible spectrum, and will give the best representation of relative fading rates. The lower the number, the better the glass is for reducing fading potential of carpets and interior furnishings.

U-Factor:
This represents the heat flow rate through a window expressed in IP (BTU/hr·ft²·°F) and SI (W/m2K), using winter night weather conditions of 0°F outside and 70°F inside. The smaller the number, the better the window system is at reducing heat loss.

More information on the ENERGY STAR windows program.