Enhanced Compliance
for all of Canada

A New Coating for Cold
Canadian Weather

Manufacturers need flexible choices when designing windows to beat the Canada ENERGY STAR® 2020 code. So we now offer a new option for the Canadian residential market. It is called LoĒ-Di89™, a new application of our LoĒ-i89™ coating. LoĒ-Di89 glass gives manufacturers that extra nudge over LoĒ-180ESC™ to meet Canada code compliance.

Canadian ENERGY STAR 5.0

For Canada, ENERGY STAR version 5.0 went into effect on January 1, 2020. These new requirements mean that windows and doors now must meet a minimum Energy Rating (ER) of 34. To meet that condition, dual pane units need to balance a high solar heat gain coefficient (SHGC) with a low U-Factor.


LoĒ-Di89: Made for Canada

LoĒ-Di89 is engineered to help more windows and doors meet the new Energy Rating of 34 throughout Canada. LoĒ-Di89 is a coating applied to the 3rd and 4th surface of a dual pane unit which allows more energy from the sun to enter the home while the low U-Factor keeps the heat in.

LoĒ-Di89 is available in a variety of custom shapes and sizes and can be heat-strengthened or tempered. In some configurations heat-strengthening may be recommended to mitigate against the effects of thermal stress.

Performance Matters

The design of a window or door requires a careful selection of materials like the sash, frame, decorative bars, as well as the glass. All of these pieces can affect the total performance values of a completed product. Therefore, some glazing options can be more advantageous for particular designs over others.

With LoĒ-Di89 glass, the advantage lies in the combination of a very high solar heat gain coefficient (SHGC) and a very low U-Factor. The high SHGC allow more passive heat from the sun to enter the home, and the low U-Factor helps retain heat within the home’s interior.

Visible Light
Fade Transmission
U-Factor :
  • IP
  • SI

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.

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.

The table shows how LoĒ-Di89 provides a very low U-Factor with a high SHGC, which contributes to the overall ER of the finished window or door.

Note that LoĒ-Di89 provides a better combination of high SHGC and low U-Factor, contributing more to a higher ER than even LoĒ-180ESC or LoĒ-180ESC/LoĒ-i89.

More Options for Better Results

For window and door companies who sell in the Canadian market, LoĒ-Di89 glass is one of many wise choices for energy-efficient windows. Not only does it provide great insulting value with a high solar passive design, it makes it easier for more product designs to meet the advanced ENERGY STAR codes for 2020.

To best understand how LoĒ-Di89 can fit into your overall fenestration needs for windows and doors, please contact your window manufacturer, contractor or architect.

Additional Resources