Doesn't make a difference if Front dealing with or 3D the trim, no caulk is utilized when only painting the trim, and never entire exterior I’ve located that trim like baseboards and molding all-around doors generally just have to be brushed anyway rather than rolled. Don’t go backwards and forwards http://exterior-painters-reviews50593.affiliatblogger.com/27710137/the-exterior-trim-paint-type-diaries