Stucco is a material that can last a hundred years, but it does have a tendency to develop cracks and holes, that can lead to water being let in and damaging the stucco and its adherence to walls.
Areas of stucco that have become loose or even fallen away must be repaired with a complete restoration process. This is what most stucco repair Naples agencies will do, and they will remove all the material that has become loose, install new lath and building paper, and then apply three coats of a mix for repairing stucco.
They will then trowel it to a finish that matches that which exists in the surrounding areas. For thicker coats, the repairs to the stucco may have to be carried out in two layers, with the first coat being scarified to receive the topcoat. Care must be taken to see that the new stucco bonds properly with the old.