Steel Ridge beam condensation control?

Hi all, minimum R value for condensation control in my climate zone is R-5 (CZ3).  If I use 1.5” polyiso board totaling R-8.7 above the roof sheathing, will that also… Hi all, minimum R value for condensation control in my climate zone is R-5 (CZ3).  If I use 1.5” polyiso board totaling R-8.7 above the roof sheathing, will that also…Read MoreGreenBuildingAdvisor