I need to put new treads and risers on my indoor entry stairs. How do I remove the existing skirt boards? Or do I just veneer the old ones?
Some times the skirt board is installed attached to the stringer, so it may not be easy to remove. Regardless, I would keep the skirt there and veneer it with about 1/8" or 1/4" plywood and add a solid wood cap. Do this first, before adding the new risers and treads. The skirt is not the easiest thing to veneer, so it is easier to cut the risers and treads tight to the skirt than vice versa.
Make a pattern from cardboard. Cut these strips a bit wider than the skirt board to allow for scribing against the existing tread and riser. Once you are happy with the fit, trim the veneer off flush with the top of the skirt board and finish it with a piece of oak, or whatever choice of wood, running on the top of the skirt, acting as a cap to cover the end grain of the veneer and top edge of the old skirt. Then fit the new treads and risers to the skirt. Watch the height of the risers. You don't want to change these too much - your risers should be consistent in height from floor to floor.