How to Fix a Warped Door

Wood doors are a classic and beautiful addition to any home. Unfortunately, when a wood door is not sealed properly it could end up with a warp. Warps are caused by too much moisture either escaping or being trapped inside of the door. Here are some steps that will help you de-warp any wood door.

Fix a Warped Door
  1. Place the two sawhorses 4 feet apart in a covered area.

  2. Remove the door with the warp from its hinges using a screwdriver or the electric screw gun. Lay the door across the sawhorse with the warped side facing up.

  3. Using the sandpaper, sand the top and the bottom of the door.

  4. Set the sandbag on the door. Make sure it is on top of the warp. Leave the sandbag on the door for at least 24 hours or until the warp is gone.

  5. Paint one coat of varnish on the top and on the bottom of the door. Let the varnish dry. Apply a second coat. Let dry.


  • Do not varnish the door itself. The varnish should be applied to what would be the top and the bottom of the door when it is hanging.
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