Stucco cracks at doors and windows are reduced or eliminated by use of a corner element fastened at a corner juncture before stucco coats are applied. The disclosed corner element spreads out or evenly dissipates differential movement or buckling often occurring at exterior corner junctures. The corner element may comprise various concentric circle attributes useful in stopping or reducing cracks in stucco and related building materials. The corner element embodiments may be secured at window and door corner areas and then integrated with traditional stucco applications.