Hi all I'm hoping you could give me your opinion of a plastering job I've had done recently. To give some background, we hired a builder to remove a wall and make good, as well as some additional tasks. In terms of plastering, this involved making good some areas where e.g. the old door frame was or the pipes were chased, skimming the rest of the wall, and plastering a new plasterboard dropped ceiling. One area of the skimmed wall is cracked and a little bit has already fallen off, so clearly I'm not happy with that. My queries relate to the rest of the work. There are visible sweeping trowel marks on the wall, some of which are rough to the touch. On the ceiling there are small ridges where it looks like he didn't fully spread all the plaster. In other sections the bits that have been filled are obvious. They're a bit difficult to photograph, but hopefully you can see what I'm talking about and give me your opinion as this is my first house, and my first building experience. There are other issues too, so I've already sent him a high level formal email of complaint. I mentioned our unhappiness with the finish of the plaster without going into detail, expecting to get into discussion from there. However, without asking what the issue is, he's offered to send someone to sand. Ignoring the fact that won't fix the cracking issue, everything I'm reading suggests that a good plaster job shouldn't ever need more than a cursory sand. What are your views on that?