Posts: 12,884
Threads: 0
Joined: Jan 2010
Location: Lewiston, NY
Some well respected door makers will argue that doors should be painted only with a brush. I like the uniform look of a sprayed finish, but the only way to practically do that is to take the door down. If you do that, it's best to block in the opening with plywood, etc. while the door is off. I had one customer who was happy with just his storm door lock for the 5 or 6 days it took to rehab his door. Not many folks are that trusting.
Anyway, I like waterborne paints. SW Emerald Urethane Trim Enamel is very nice. I haven't used it, but SW Snap Dry is specifically made to dry in an hour or so, so you can repaint the door while it hangs and close it again the same day. FWIW, waterborne paints will flow out just as well as oil based ones if you add a little Extender to it. BM makes a very good product called "Extender". 3 - 6% works well in most applications.
John