Hi folks. I have a large area of pebbledash that needs to be painted (half brick/half pebbledash house). I know from experience that this is a truly horrible job to undertake as the surface is very textured with large pebbles. However, I have read a couple of online comments suggesting that the rough surface can be "softened" prior to painting by covering the pebbledash with a slurry coat. As I understand it this involves making some kind of render mix involving sharp sand, SBD and cement. Is this a good idea? If so, what is the mixing ratio and appropriate method of application? In fact any tips or suggestions would be really appreciated. Thank you.