How do I Prime Newly Plastered Walls?

Priming or sealing means applying a coating which is diluted enough to enter the pours of the material with the emulsion or liquid with which it’s mixed. To seal a newly plastered or artexed surface on which you intend to put water based paint, eg matt emulsion, then mix some of that emulsion paint with a water at a ratio of 4 parts paint to 1 part water and stir thoroughly. Apply this to the surface and sometimes you can even hear the plaster or artex sucking up the liquid. If the plaster does not seem to be sucking up the liquid quickly, more water can be added to a maximum of 1 part water to 1 part paint.