You'll definetly pick up the pace of its on thinner, beads are 3mm and a lot of lads caulk them and tapered joints out before spreading, it doesn't set any quicker if it's on thinner though it will dry quicker in warmer weather. The boarding obviously needs to be decent.
People go on about site work being rough, but when I was house bashing for about 15yrs I followed the neatest boarding & dabbing I've ever done.
If you are getting 10m2 a bag your on at 2mm don't mind kitchy
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