Once the area is clean, free of clutter and appropriately protected, the next stage is to prepare the area to be plastered. If you are working with new plasterboard then there isn’t a lot of preparation needed. However, if you are plastering over existing plaster (such as re-skimming a ceiling or skimming a wall etc) then you will need to remove loose plaster, grease, paper and dust from the surface. This is incredibly important in order to allow the new plaster to correctly adhere to the surface. Next apply the primer, if done correctly you should have a nice, clean surface that is slightly damp and feel tacky to the touch.
This is where you start applying the plaster. It’s important to get the right mix for the plaster and experience plays a big part in this. Plastering is one of those jobs that, once you’ve started, you need to see it through. The timer is ticking as soon as the plaster is mixed so you need to have a proper plan of how you are going to tackle the job. The correct tools and not trying to be too ambitious with the area you’re covering is key here. It’s much better to mix more plaster as you need it than start with too much plaster and then have problems with the mix going off.