New low slope roof -> A Canadian told me to double strap, radiant barrier, vent and used exposed fastener.

What do you guys think about this?  Zone 5, northern utah with two large shed roofs that face south.  They are both 1.5:12 pitch and have HT underlayment on them… What do you guys think about this?  Zone 5, northern utah with two large shed roofs that face south.  They are both 1.5:12 pitch and have HT underlayment on them…Read MoreGreenBuildingAdvisor