How to Fix a Broken Stair Post

Stair rails consist of various parts to support the banister while adding an interesting framework to your staircase. Stair posts can break if you lean on them too much or if the wood had a defect that went unnoticed during installation. Replace the broken stair post as soon as possible to relieve any added tension of the other posts and to keep you and your family safe on the staircase. Purchase a replacement post that is 1/4 to 3/8 inch longer than the original post.

Saw
Replacement post 1/4 to 3/8 in. longer than original post
Electric drill
Borer bit
Wood glue

Instructions

- 1
  Saw through the broken stair post and remove both parts from the staircase.
- 2
  Bore the hole in the top rail 1/2 inch deeper with the appropriate borer bit fitted to an electric drill. Be careful not to bore through the top rail.
- 3
  Slide the top of the replacement post unto the top rail hole and slide the bottom in place.
- 4
  Remove the post and put wood glue on both ends. Slide the post back into place and wipe up any glue that has seeped on the outside of the banister.
- 5
  Clamp the post to the top rail and to the bottom rail. Let it sit for several hours to cure completely according to the wood glue manufacturer's instructions. Wipe up any glue that seeps out.
- 6
  Remove the clamps.

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