Water leakage through the exterior wall was reported at a 30-year-old, one-story commercial building in the Midwest. The building had been constructed with concrete masonry unit (CMU) bearing walls clad with brick masonry veneer, and steel open-web joists supporting a steel roof deck. The portion of the building experiencing leakage had been extensively renovated approximately 15 years ago, including modifications to the exterior façades, to create new storefronts for multiple commercial tenants.