I'm painting a room that had previously been wallpapered. The walls are veneer plaster coated, so the paper was easy to remove and clean the plaster. However there are patches for wiring, dings and other artifacts of sloppy plastering that I've covered with regular joint compound.
As I start painting (latex) I find that unless I'm really quick and wet across the compound, it starts to come up and ruin the finish.
Should I be spray priming? What do others do about this issue?