I have very old aluminum windows and am planning to replace them soon. My current window trim is nailed on over the siding but since I will be cutting back the siding to nail the window flange I figured I'd add inset trim. I understand how to do a rectangular trim properly but would like to add some craftsman touches as that would match my house better. Nothing fancy like cove trim, something more shaker style.
I have looked at a ton of videos, diagrams and explanations online of how to trim exterior windows and have one question I cannot get answered to my satisfaction. In places where the decorative trim extends past the rectangular profile of the flat window trim, what do you do? For example, the crown trim, cap, sill and bullnose may be wider than the side casing. Do you simply rabbet such trim so that where it extends past the sides of the flat trim it lays on top of the siding?
I'm sure this is a very basic question for anyone who has done a lot of windows installs. I'm sorry if it's already been asked and answered. I for the life of me could not come up with a way to formulate this question such that I could find a helpful response in google, youtube or on this site.