WAC 51-11R-40250. Section R402.5 — Maximum fenestration U -factor and SHGC

R402.5 Maximum fenestration U -factor. The area-weighted average maximum fenestration U -factor permitted using tradeoffs from Section R402.1.5 or R405 shall be 0.48 for vertical fenestration, and 0.75 for skylights. EXCEPTION: The maximum U -factor and solar heat gain coefficient (SHGC) for fenestration shall not be required in storm shelters complying with ICC 500.