At first look, the smooth cover of stucco on the Eastern Birkenstock celtics home seemed as ideal as a roads, the most ideal aluminum foil against the severe wet climate of this seaside town. Yet below its abundant wrapp of ivy, the concrete spend was a clutter of breaks and attachment, symptoms that normal water had gotten in and broken the actual wooden lath.

When effectively set up, stucco (a cement- or lime-based plaster) is about as untroubled and long-lived a cladding as anyone could wish 100 years is not unusual. But when big breaks or sores appear, the time to make maintenance is right away, before the destruction develops.

Here's the thing: when you use mortar as wood filler for rotted wood, you fix nothing; you have put a moisture-holding substance next to the damp wood, which is going to allow the rot to proceed apace.
You need to either replace the rotted wood, or let it dry fully, then treat with ($$$) epoxy consolidant and filler.
Casey