I scraped out the plaster popcorn. I already done 2 coats of all purpose joint compound. I plan to do two more coats.
For my third coat, should I use all purpose joint compound or topping?
I plan to have a total of 4 coats.
My last project, I did 3 coats (last coat was topping). This time, I figure 4 coats would give me a smoother surface