How to Clean a Metal Door

Insulated Vs. Non Insulated Garage Doors
Written By
Sal Marco
Sal Marco
Published: Nov 28, 2010
Updated: Nov 20, 2021
2 minute read

It is necessary to use the right products in order to avoid scratching and damaging the surface. Using abrasive products can remove the protective finish and allow the metal to rust.

Things You Will Need

  • Mild dishwashing soap
  • Water
  • Spray bottle
  • tri sodium phosphate (TSP)
  • Large rag or newspaper
  • Rag or sponge
  1. Mix 1 tsp. of mild dish washing soap into 2 cups of warm water and pour into a spray bottle. If you have tougher stains, use tri sodium phosphate. TSP, available at paint stores, is an all-purpose cleaner that does not harm most surfaces.

  2. Place an old towel, large rag or layer of newspaper at the bottom of the door to catch drips from the cleaning solution.

  3. Spray the surface of the metal door with the soapy mixture or TSP. Begin at the top of the door and allow the spray to run down the door. Spray the entire door thoroughly.

  4. Wipe the door with a rag or sponge to remove grease, dirt and grime. Repeat on areas that have tough stains.

  5. Rinse the metal door with plain water and dry thoroughly with a soft rag.

The Drip Cap

  • Doors become dirty from exposure to outdoor weather conditions, dirty hands or accidental spills.
  • Using abrasive products can remove the protective finish and allow the metal to rust.
  • Place an old towel, large rag or layer of newspaper at the bottom of the door to catch drips from the cleaning solution.
  • Spray the entire door thoroughly.

Photo Credits

red garage door image by green308 from Fotolia.com

red garage door image by green308 from Fotolia.com

Sal Marco

Sal Marco began writing professionally in 2009. He has written many online home improvement articles based on his more than 20 years of experience in the home improvement and building industries. He has worked as both part of a team and as…

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