Hello. I have just torn down a 1.2 square meter flower box and what's left is an outer brick wall that I now want to plaster so that the wall is as thick as the other walls. How thick can I plaster without needing reinforcement? It is about 60 cm from the floor to the window section that I need to plaster, and about 7 cm thick that I would need to plaster. Tips are welcome.
About 15 mm at a time should work, so you need to apply it in several layers.