A significant effect of local exposure conditions, i.e. height and orientation, on carbonation depth did not emerge. The presence of coating with high thickness, cementitious nature and low porosity both prevented concrete carbonation and delayed the ingress of water into concrete. Hence, most rebars embedded in concrete were either still passive or free from actively-propagating corrosion. A repair strategy based only on the repair of the few local cracked areas is proposed, whilst the sound concrete, even if carbonated, should not be removed.