How to Repair a Load-Bearing Post

Floor sagging? Here's the solid cure for rotting posts and sinking footings.

Required Tools for this Project

Have the necessary tools for this DIY project lined up before you start—you’ll save time and frustration.

  • Circular saw
  • Level
  • Dust mask
  • Hammer drill
  • Safety glasses
  • Trowel

Hydraulic jack, Shoring post, Plumb bob, Diamond blade for circular saw

Required Materials for this Project

Avoid last-minute shopping trips by having all your materials ready ahead of time. Here's a list.

  • 4000 PSI concrete (minimum)
  • Concrete plinth block
  • Wood post (4 x 4 or 6 x 6) for jacking
  • 2 x 10 weight-spreader boards
  • Sill sealer
  • ½” dia. rebar
  • Anchor bolt
  • Heavy duty galvanized metal straps
  • Heavy duty T-brace
  • Joist hanger nails

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