How to Replace a Baluster

Whether removing an intact baluster or replacing a missing one, first pry the end cap off the tread. If taking out a baluster, pull it sideways out of the mortise in the tread, then free the top end by tapping it with a hammer toward the top of the stair. Use nippers to pull out any nails in the handrail and tread, and 80-grit sandpaper to smooth the tread around the mortise and the underside of the handrail.