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R402.5 Maximum Fenestration U-Factor and SHGC (Mandatory)

Energy Conservation Code 2015 of Utah > 4 [RE] Residential Energy Efficiency > R402 Building Thermal Envelope > R402.5 Maximum Fenestration U-Factor and SHGC (Mandatory)

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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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