How to safely clean interior and exterior brick

Brick is durable, but it’s not immune to dirt, dust, and stains, which means, yes, you have to clean it! Interior and exterior bricks need to be maintained, but they can’t exactly be washed using the same method (using a pressure washer inside your home wouldn’t be ideal!). Whether you’re looking to give your interior brick accent wall a brand new look or want to refresh your home’s exterior brick walls, we’ve got you covered. Follow the next steps and your brick will be sparkling in no time.



  • Vacuum cleaner or broom
  • Water spray
  • Grout sponge
  • Dishwasher soap
  • Nylon bristle brush


    • Pressure washer
    • Detergent
    • Grout sponge
    • Bleach
    • Nylon bristle brush
    • Rubber gloves
    • Protective glasses

      How to clean the interior brick:

      3D rendering of a fully furnished living room

      alvarezGetty Images

      1. Remove any dust and surface dirt with a vacuum cleaner or broom.
      2. Wet the brick using a spray bottle filled with water.
      3. Apply a cleaner of your choice depending on how dirty the brick is.
      4. For a gentle approach, clean the brick with lukewarm water and a little dish soap using a grout sponge.
      5. If necessary, use a nylon bristle brush to scrub away the dirt.
      6. Rinse the brick with lukewarm water using a clean sponge and allow it to dry.

        How to clean the exterior brick:

        beautiful structure of old brick house

        Westend61Getty Images

        1. Use a pressure washer to clean the sturdy exterior brick. Note: Some older bricks cannot be pressure washed. Consider seeking professional advice if you own an old or historic home.
        2. Before pressure washing, find and repair cracks in the brick.
        3. Make sure all windows are sealed and electrical appliances are covered with waterproof material.
        4. Cover any nearby landscaping, such as shrubs and flowers, with a tarp.
        5. Use low pressure (between 500 and 1000 PSI). Safety Tip: Be sure to wear eye protection and non-slip shoes when using a pressure washer.
        6. First apply the detergent from the top to the bottom of the wall.
        7. Let the detergent sit for a few minutes according to the manufacturer’s instructions.
        8. Using a surface cleaner or low pressure nozzle, thoroughly rinse the wall from top to bottom. Follow the manufacturer’s instructions to determine how far the nozzle should be from the brick when in use.
        9. Rinse off any detergent residue from other surfaces, such as the driveway or patio, using a garden hose.
        10. Treat stains, mildew or moss on brick:
        11. To do this, remove the surface dirt using a sponge.
        12. Put on protective gear, including rubber gloves, eye protection, and even a respirator.
        13. Mix 1 tablespoon of bleach per gallon of lukewarm water.
        14. On damp brick, use a sponge to apply the DIY cleaner.
        15. Gently rub with a brush.
        16. Rinse the brick with lukewarm water.
        17. Take a step back and rinse the stain a second time using a garden hose spray.

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