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Unlabeled vertical fenestration, both operable and fixed, shall be assigned the U-factors, SHGCs, and VTs in Table A8.2.
Table A8.2 Assembly U-Factors, Assembly SHGCs, and Assembly Visible Transmittances (VTs) for Unlabeled Vertical Fenestration
Frame Type Glazing Type Unlabeled Vertical Fenestration
Clear Glass Tinted Glass
U-Factor SHGC VT U-Factor SHGC VT
All frame types Single glazing 1.25 0.82 0.76 1.25 0.70 0.58
Glass block 0.60 0.56 0.56 NA NA NA
Wood, vinyl, or fiberglass frames Double glazing 0.60 0.59 0.64 0.60 0.42 0.39
Triple glazing 0.45 0.52 0.57 0.45 0.34 0.21
Metal and other frame types Double glazing 0.90 0.68 0.66 0.90 0.50 0.40
Triple glazing 0.70 0.60 0.59 0.70 0.42 0.22

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5.5.4 Building Envelope, Fenestration
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The total vertical fenestration area shall not be greater than that specified in Tables 5.5-0 through 5.5-8. Exception to 5.5.4.2.1 Vertical ...
5.8.2 Building Envelope, Fenestration and Doors
for determining compliance with the U-factor criteria for vertical fenestration. U-factors from Section A7 shall be an acceptable alternative for determining ...