BuildingandLegal
otherwise, the only way to cover up the issue (you can't fix it!) is to grind the surface only a couple of mm to get a clean surface to bond too and have an epoxy fleck finish applied to the surface. It will accommodate most of the movement without cracking
slightly off topic, but would the epoxy be flexible enough to cover the fine cracks, if say it was applied straight after house handover and the house was still settling?