DIY Network

How To Replace Bad Column Wood

Learn how to take the bad wood from the original porch column and replace it with new.

More in Outdoors

replacing bad column wood
  • Time

    Day

  • Price Range

    $250 - $500

  • Difficulty

    Moderate to Hard

Highlights:

Step 1: Remove the Column Railing

Place the brace that will temporarily replace the post where the post was. Use a jack to raise it high enough to relieve pressure.

remove column railing

Step 2: Prep the Column and Infill Material

Determine the depth and height of the water damage. Next, mark at least one or two inches above the rot. Using a circular saw, cut across the post a depth of half the column. Also, determine the height of the joint to be at least two thirds the width of the column. Repeat the same depth on the opposite side at the same height. Finish cutting out the rotted wood with a handsaw, then separate the wood with a chisel. Prepare the new infill material by determining the height of the new material and cutting it to height, then matching the joint together. If necessary, apply wood hardener to the surface of the old wood to add more strength.

mark at least one or two inches above rot

Step 3: Connect the Infill Material to the Column

Drill large boles (Image 1) in both pieces of the wood so screws can be recessed. Clamp new and replacement wood together; drill pilot holes further into the wood for the screws. Unclamp the wood, then dampen the interior side of the replacement wood with a wet cloth and apply urethane glue in a diagonal pattern (Image 2). Clamp the wood, then connect the two pieces of wood using three inch galvanized screws. Next, cut plugs of wood from the remaining wood. Using wood glue, fill the screw holes with plugs. Allow four to six hours for the glue to dry. Sand the wood smooth.

Step 4: Reinstall the Porch Column and Connect the Balustrade

If necessary, cut off any excess height from the infill material. Anchor the column to the porch using three inch galvanized deck screws. Prime the wood, then caulk the exposed nail holes. Finish with a final coat of latex paint.

Was this project helpful?

Don't forget: Read comments and leave your own

Advertisement

Projects

COMMENT ON THIS PROJECT

    

Sign in

All fields are required.

E-mail Address:

Password:

Remember me on this computer

Signing in

Please enter your email address and we will send your password

E-mail Address

Your password has been sent and should arrive in your mailbox very soon.

Not a member?

Sign up with DIY Network to share tips with other do-it-yourselfers and comment and ask questions on projects.

It's free and easy.