The existing stucco is a newer coating added in the 1950’s, covering the original smooth stucco. The newer stucco is cracking, largely due to expansion. It would be aesthetically desirable to remove the existing modern stucco to reveal the original smooth stucco on the Cathedral.
A long-term solution is to remove the outer stucco coating to expose the original stucco. The condition of the original stucco will depend on the mode of restoration. Cracks and spalls will be patched, and expansion joints cut into the stucco as required. A smooth new coating of stucco then will be applied. The stucco then will receive a breathable masonry coating, which would not block moisture from traveling through the wall (which, if blocked, would cause water damage in the wall).