(2) Exterior walls, structures and appurtenances. Every exterior wall, door, porch, patio, floor, step, chimney, railing, window, sill, sash, molding, lintel, frame, gutter, downspout, lattice, fence, gate, or any other exterior portion of a structure or any parts or features thereof, shall be maintained free from holes, cracks, damaged, decayed, deteriorated, warped, loose, or missing materials, and shall otherwise be maintained in good repair and in a structurally safe, sound and functioning condition. All windows, doors, roofs, walls, or other means of access to a building or structure shall be secured against uncontrolled outside access.