This credit requires us to comply with the U-values prescribed by ASHRAE Standard 90.1-2007.

Our project has a Glass skylight covering more than 5% of the roof. The U-values prescribed by ASHRAE are only for skylights covering from 0% to 2% of the roof or 2.1% to 5% of the roof.

As such, could anybody tell me what are the U-values requirements for glass skylight with curbs covering more than 5 % of the roof ?
What about glass skylight without curb ?

Thank you for your help.