Lintels commonly fail due to age via corrosion or structural settling. The purpose of a lintel is to bear the weight of the masonry above voids such as windows or doors. The life and structural integrity of a lintel depend on equal distribution of weight, the appropriate size/ gauge of steel, placement, flashing and rate of corrosion.
When replacing a lintel, we prefer to adapt a small amount of technology when given the chance. When given this accessibility, we can take advantage of products like galvanized steel to prevent future corrosion, flashing with primer, and end dams installation with weep holes for sufficient water distribution.