Revisions log for Answer #1436

You can do the facade of moisture-resistant plasterboard in two layers, putty joints silicon-based putty, then attach the facade of the grid, such as serpianka, and make on this grid facade plaster (cement-based!) thin layer 3-4 mm, then make protective-decorative coating of paint on silicone basis in two layers. I think that in your case it is still advisable to apply OSB sheet instead of moisture-resistant gypsum board.

If I understood correctly, you have a frame house, in this case inside the wall there is already insulation of 100 to 200 mm thick, and the outer panel of moisture-resistant plywood or OSB, at the joints between the boards should be a technological gap of 5-10 mm, already filled with silicone putty, then you only need to fix the mesh and you can plaster and paint in any color and combine with stone finishing, etc.