Fastening schedule – rigid foam above roof sheathing

In the GBA article titled “installing rigid foam above roof sheathing”, Martin says this about fastening the upper layer of sheathing: “When fastening the upper layer of plywood, OSB, or 2x4s… In the GBA article titled “installing rigid foam above roof sheathing”, Martin says this about fastening the upper layer of sheathing: “When fastening the upper layer of plywood, OSB, or 2x4s…Read MoreGreenBuildingAdvisor