When installing window molding, start at the top. cut a 45-degree angle on one end of the trim and hold it so the short end of the angle overhangs halfway, or 3/8 in., onto the jamb. then mark the other end flush with the inside of the jamb.. When installing window casing inold houses, tom often has to contend with walls that dip and bulge, causing gaps between the trim and wall. he can't ignore these impoerfections, but he doesn't fill them with caulk.. Door frames and casing. door trim is a lot the same idea as window trim, but if you need some more pointers, this is a great informative diy door trim tutorial from dream book design. and thrifty decor chick will show you how to install craftsman door trim.
