Why did the roof fail but not the wall?

Hi all, trying to understand why a house that was fully wrapped (roof and walls) with peel and stick vapor barrier WRB (Ice and water shield) and no exterior insulation… Hi all, trying to understand why a house that was fully wrapped (roof and walls) with peel and stick vapor barrier WRB (Ice and water shield) and no exterior insulation…Read MoreGreenBuildingAdvisor