A staircase banister that is loose and moving while you hold onto it is not a safe banister. If you are a do-it-yourselfer you probably want to be able to fix that yourself.
First, the anatomy of a staircase should be clear. Its basic parts are the tread that you step on, the riser, which is the vertical part between treads, and the banister, the part that is on the side offering support when going up and down. The banister has three components: the
A second solution asks for: safety goggles, electric drill, screwdriver matching the screw head, combination bit corresponding to the used screw, flathead wood screws, 220 grit sandpaper, wood putty and wood finish or paint. Drill a pilot hole upwards through the baluster and into the
If the baluster got loose in its bottom mortise where it meets the tread, you will need the same tools and expendables like in the second solution. You will drill a pilot hole down through the baluster into the tread at an angle. Drive in the screw, countersink it and tighten it. Just like in the previous case, you will then fill the hole with wood putty, let it dry, use the sandpaper to sand the area and then finish.