I have hemlock door casing and baseboard. Most of the casing is installed. Most is pre-painted. The baseboard is painted & cut but not installed yet. What tips do I need when I caulk the casing and baseboard trim prior to painting? ps. I already have the walls painted. Should I plan on a second coat after the caulking of casing & baseboard????
The main tip is to use paintable caulk (speaking from experience, here)
I like to be a minimalist with the caulk to avoid cleanup and mess. Just put a bit to cover the gaps and smooth it with your finger. There are tools you can use to smooth the caulk, too, but I've always used a finger.
And yes, you'll need to put another coat on the walls post-caulking.