How do you make stair treads with an open riser stop squeaking? The treads are connected to the stringer with brackets.
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1Maybe this could help familyhandyman.com/floor/repair/how-to-repair-squeaky-stairs/… – Zero Pancakes May 13 '17 at 6:43
You could try tighting the brackets. If the brackets are screwed on unscrew remove thread and apply some adhesive like F-26 or Liquid Nail then reinstall. If that's not possible you could screw or nail thru top of thread directly to the riser. This old school trick might be an option, squirting a small amount of either baby powder or graphite between the tread and riser. I'm guessing the stairs are made of wood.