2 0 1 3 P R O D U C T G U I D E VIRACON PRODUCT GUIDE 2013 ...

PRODUCT CONFIGURATIONS
TRIPLE INSULATING GLASS
The most common triple insulating glass units are constructed with three
plies of glass separated by two hermetically sealed and dehydrated
spaces. This construction increases the insulating value of the glass unit,
thus reducing the u-value. A triple insulating glass unit is especially useful
in applications where a low u-value is necessary.
While it is possible to specify a 1” triple insulating unit to coincide with a 1”
dual pane insulating unit, it is not always practical. A 1” triple insulating unit
is constructed with 1/8” glass plies rather than 1/4” plies used in a 1” dual
pane insulating unit. The reduced glass thickness increases the potential
for distortion and since the 1/8” plies are not as strong as 1/4” plies, the
width and height of the glass units must also be decreased. In addition, the
solar performance improvement is minimal.
More commonly, triple insulating glass units are constructed with three
plies of 1/4” glass and two 1/2” spaces. Viracon’s triple insulating glass
units are available with the same Low-E coatings offered with dual pane
insulating glass and the Low-E coating is placed on the #2 surface.
TRIPLE INSULATING KEY BENEFITS:
+ Two spacers provide superior insulating performance
+ Reduces the center of glass u-value
1" VRE1-54 insulating
1/4" (6mm) clear with VRE-54 #2
1/2" (13.2mm) airspace
1/4" (6mm) clear
1" VRE1-54 TRIPLE insulating
1/8" (3mm) clear with VRE-54 #2
5/16" (7.5mm) airspace
1/8" (3mm) clear
5/16" (7.5mm) airspace
1/8" (3mm) clear
1-3/4" VRE1-54 TRIPLE insulating
1/4" (6mm) clear with VRE-54 #2
1/2" (13.2mm) airspace
1/4" (6mm) clear
1/2" (13.2mm) airspace
1/4" (6mm) clear
VLT 47%
Winter u-value 0.30
Summer u-value 0.27
SHGC 0.31
VLT 44%
Winter u-value 0.27
Summer u-value 0.29
SHGC 0.29
VLT 42%
Winter u-value 0.22
Summer u-value 0.22
SHGC 0.28
052 VIRACON // INSULATING GLASS