How to Repair Sun Damaged Hardwood Floors

Exposure to sun can cause the color of your hardwood floor to fade. Sunlight will also speed up the oxidation of wood, and the aging of your hardwood floor. Before repairing a wood floor, you first must determine the extent of the damage. Look to see if the damage is confined to just a board or two near a window, or a much larger section of the floor. Look to see if the damage is just surface deep by removing the finish and looking at the bare wood.

Slight Sun Damage

Step 1

Prepare the floor to be sanded.  Nail down any loose boards, or nails that are sticking out of the wood.

Fill in any gaps between boards with a wood filler. 

Step 2

Remove the finish from the floor with a sander or varnish remover. 

Step 3

Sand the floor several times until the wood is smooth.  Start with a medium-grain sandpaper and use a finer-grain sandpaper with each subsequent sanding.

Step 4

Vacuum the floor to remove any debris from the sanding. 

Step 5

Stain and refinish your floor. 

Severe Sun Damage

Step 1

Carefully remove any boards that need to be replaced with a hammer and wood chisel.  Take care not to damage any other planks.

Step 2

Drill holes along the damaged section of a wood board, if only part of it needs to be replaced.  Split the damaged section with a hammer and wood chisel.

Pry out the damaged part of the board from the floor. 

Step 3

Cut a replacement piece of wood that matches the board (or section of the board) that you are replacing.  Tap the board in place with a hammer.

Secure the board with nails. 

Step 4

Stain and refinish your floor. 

Things You Will Need

  • Hammer
  • Wood filler
  • Sander
  • Varnish remover
  • Sandpaper
  • Vacuum
  • Wood stain
  • Wood finish
  • Wood chisel
  • Drill
  • Nails


  • Seek help at a local home improvement store to match the color of the stain on your existing floor.


  • Always sand in the direction of the wood's grain.

About the Author

John Smith is a writer with over 30 years experience. He has worked at a newspaper, various magazines and websites, and he has interests in a wide range of subjects including sports, politics and entertainment. Smith earned a bachelor's degree in history from the College of New Jersey.

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