I’ve installed miles of trim over the years, most of it in old houses, where I’ve encountered every conceivable shape, size and combination of wood molding. I’ve learned a lot in the process ...

If the walls of a room are an outfit, think of the trim (also known as woodwork, window casings and the like) as a statement ...

Clean up the coped cuts with a file or sandpaper. A round file works well for tight curves. Pro tip: Keep a scrap of the trim handy so you can check the fit as you fine-tune the cope. With complex ...

Nate Berkus stunned fans with the pre-war trim in his New York home. Here, an expert shares how to get the look.