I'm about to embark on some painting projects. I'll be painting (priming) bare wood (fir) jambs/doors, a vanity and some drywall. My understanding is most flat paints are sand-able, while glossy paints cannot be sanded (i.e. they snag and peel when sanded). BTW, I want to use latex, not oil base. I like to be able to sand in case I mess up or need to retouch something. How can I determine what paints can be sanded. Can all primers be sanded. I was planning on using zinsser bullseye 123 (primer/sealer) for the door jambs and doors. I was also looking at a Glidden Gripper Aquacrylic, which is slightly more expensive.
Primers sand well. Oil based (alkyd) paints sand beautifully to a powder. Latex paints do not sand well in my opinion; they gum up. I have not had experience with sanding flat latex products.
There is a new product on the market that is a water-borne oil paint. It cleans up with water but apparently levels nicely like 100% alkyd. I don't know how it sands but it might be worth asking someone at a paint store.