Cardinal Glass

For years, Cardinal Low-E glass has been setting the standard for energy-efficient glass. They are the glass supplier of choice for top of the line window and door manufacturers in the United States, www.cardinalcorp.com. Heritage’s 12 plus year relationship with Cardinal Glass shows our commitment to quality and also our passion for improvement.

We now carry as our stock inventory glass, Cardinal LoE-366 (low E cubed 366). This is the new generation of low-E glass that reduces window heat gain by 64% compared to ordinary glass. The advantage of LoE-366 is that it reduces the SHGC to levels of tinted glass (LoE-240) without the loss of light transmittance that comes with tinted glass.

• 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 portion of energy transmitted in a spectral region from 300 to 700 nanometers. This region includes all of the ultraviolet energy and most 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 BTU/hr/ft2/ºF, using winter weather conditions of 0ºF outside and 70ºF inside. The smaller the number, the better the window system is at reducing heat loss.