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PRODUCTS / WINDOWS / GLASS

CHOOSE YOUR GLASS

Good design and correct installation are important factors
in ensuring energy efficient windows, but glass performance
plays the biggest role.

Different glass options have different benefits, so before choosing your glass, be sure
to consider the weather conditions of where you live. Colder climates will require more
insulation power and specific glass coatings to improve energy efficiency.

GLASS OPTION RATINGS

GLASS NAME        HEAT SYSTEM                       DESCRIPTION       U-VALUE*  U-VALUE†  R-VALUE*  R-VALUE†  SHGC†  VISIBLE LIGHT  UV BLOCK
   CLEAR              DUAL     Dual pane, clear glass, no coatings      2.725     0.480     0.367     2.083   0.760        81%         42%
                        TRI    Triple pane, clear glass, no coatings    1.760     0.310     0.568     3.226   0.685        74%         52%

                  HS1-C180 Dual pane, one Low-E coating, Argon        1.476     0.260     0.678     3.846 0.685      79%                         71%

LOW-E             HS2-C180 Triple pane, one Low-E coating, Argon      1.045     0.184     0.957     5.434 0.615      73%                         76%

                  HS3-C180 Triple pane, two Low-E coatings, Argon     0.755     0.133     1.325     7.518 0.560      70%                         87%

SYSTEM V SUNSTOP  HS4-C270 Dual pane, one SunStop coating, Argon      1.408     0.248     0.710     4.032 0.367      70%                         86%

                  HS5-C270 Triple pane, one SunStop coating, Argon    1.056     0.186     0.947     5.376 0.338      63%                         88%

                  HS6-C270 Triple pane, two SunStop coatings, Argon   0.704     0.124     1.420     8.064 0.310      54%                         96%

                  HS1V Dual pane, two Low-E coatings, Argon           1.187     0.209     0.842     4.783 0.623      77%                         73%

                  HS4V Dual pane, one Low-E & one SunStop coating, Argon 1.136 0.200 0.880 4.998 0.361               69%                         86%

*D enotes Metric and †denotes Imperial. Values are     R-Value: A measurement of the resistance of heat transfer through glass. The
 from centre of glass. Rating may vary by product       higher the R-Value, the better the window insulates against heat.
 line. See your sales representative for more details.
 All performance is C.O.G. (centre of glass) ratings    Solar Heat Gain: The amount of the sun’s heat that transfers through glass from the
 based on Vision v4.0 simulations. All C.O.G R-values   exterior to the interior side. The higher the solar heat gain, the more a window allows
 are based on ASHREA Winter Conditions.                 heat to pass through into a home.

10                                                      U-Value: A measure of the rate of nonsolar heat flow through a material or assembly.
                                                        The lower the U-Value, the greater a window’s resistance to heat flow and the better
                                                        its insulating value.
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