How to remove and replace a wood porch column

  • Written by  Danny Lipford
How to remove and replace a wood porch column

Exterior wood porch columns can deteriorate and rot over time due to exposure the elements. Replacing a damaged porch column isn’t that hard, but proper safety precautions need to be taken to avoid injury or damage to the porch.

To remove and replace a porch column:

  • Attach a short 2”x 6” board to the end of a 4” x 4” post.
  • Position a jack directly under the porch beam next to the column.
  • Measure from the porch beam to the jack, and cut the 4×4 to just under this length.
  • Position the post, and use the jack to raise the porch beam slightly until the old column can be removed.
  • Check to make sure the porch beam is level by raising or lowering the jack.
  • If you’re using a plinth block as the base of the column, position it in the same location as the old column, then measure from the top of the plinth block to the bottom of the porch beam.
  • If you’re installing the new column directly on the porch floor, measure from the floor to the beam.
  • Make sure one end of the new column is square, and cut the column square to length on the other end.
  • If the bottom end of the column isn’t sealed, paint or apply sealant to it to prevent water from wicking up the column.
  • Attach the plinth block to the sealed bottom of the new column.
  • Set the new column in place in the same location as the old column.
  • Use a level or plumb bob to make sure the column is plumb in all directions.
  • Slowly release the jack to lower the beam onto the new column.
  • Apply optional trim molding to the base and top of the new column.
  • Prime and paint the column and molding with quality exterior paint.

Watch the video for details.

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