The way we done it was following, cleaned the wall section what needed to be done. fitted the mesh to the existing render, applied an sloppy but sturdy first level, making sure that the mesh is well covered back and front, let dry till near dry, fit the second layer smootly over it let near dry, fit the third layer more wet then the two before and with the pebbles in it. That was done as first repair when a large window was removed 7 years ago, and it still looks perfect, we have now done the previous patio door, now a wall, we hope that it will last indeed at least ten years.
gerardus kholinger, April 2010