I'm having a first go at skimming plasterboard this weekend but I think I may have ordered the wrong angle beading from screwfix. I had a choice of two - a 2mm dry wall bead or an 8mm angle bead page 38. One seemed too big the other two small so I opted for the 8mm on the basis that I will be doing two coats of skim. Can someone please tell me which one I should've ordered and whether I could still use the 8mm beading around a chimney brest?
Jon