Forgive the repetitive post. I’ve read threads on this subject before but found too much by advanced search, and not the best ones I recall. I know there’s a ton of experience here.
We are about to make the deposit to a good plasterer to skim coat some walls and ceilings from orange peel to flat. The existing paint is very hard and glossy. Rocklath underneath.
Bonding agent and hot mud appears to be in order (brands?). What other prep is essential, such as sanding first, or primer under bonding agent? Prep is going to be a pain because it is up stairwell walls.
Thanks in advance.