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R405.5.3.4 Maximum Fenestration SHGC
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The Proposed Design must have either an area-weighted average maximum fenestration SHGC of 0.50 or a window area-weighted average overhang depth of 4.0 feet or greater (all conditioned space windows must be included in the calculation). The area-weighted average maximum fenestration U-factor permitted using tradeoffs from Section R402.1.5 or R405 shall be 0.48 in Climate Zones 4 and 5 and 0.40 in Climate Zones 6 through 8 for vertical fenestration, and 0.75 in Climate Zones 4 through 8 for skylights. The area-weighted average maximum fenestration SHGC permitted using tradeoffs from Section R405 in Climate Zones 1 through 3 shall be 0.50.
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R405.5.3.4 [RE] Residential Energy Efficiency, Maximum Fenestration SHGC
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R405.5.3.4 [RE] Residential Energy Efficiency, Maximum Fenestration SHGC
The proposed design must have either an area-weighted average maximum fenestration SHGC of 0.50 or a window area-weighted average overhang depth ...
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In Climate Zones 1 through 6, skylights shall be permitted a maximum SHGC of 0.60 where located above daylight zones provided with daylight ...