It's enough all day long. When you factor in wet edges, reveals, awkward bits and not making a mess 100m is a good stint in my book. I find thin coat over a few days knackers you because of the pressure needed to spread it out far enough. Done a couple of jobs with parex sand fine now, used to always use coarse for some reason. Hated it at first but it's grown on me and as long as the basecoats mint it goes on like a dream. Not so much pressure needed because of the small grain. Getting about 18m a tub as opposed to 10 with the coarse. And the finish is a lot more like painted s&c which people prefer. Anyone spraying the smooth?(apologies for going off on a tangent!)