This Tempe, Arizona home had visible deterioration along the exterior stem wall, a common sign that moisture has reached the reinforcing steel inside the concrete. As steel rebar corrodes, it can expand and cause the surrounding concrete to crack, separate, or spall. The damaged section was professionally repaired to restore the stem wall and provide a clean, durable finish. These before-and-after photos show the improvement following the stem wall repair and help demonstrate the importance of addressing concrete deterioration before the damage progresses.