The exterior walls and roofs of buildings shall be maintained in a clean, orderly, and attractive condition, free of cracks, dents, punctures, breakage or other forms of visible marring. Materials that become excessively faded, chalked, cracked, chipped, damaged, or otherwise deteriorated shall be replaced, refinished, repaired, or repainted in accordance with the reasonable determination and order of the Zoning Administrator in consultation with the Building Inspector.