How to Remove Green Corrosion from Copper Pipes?

You can remove green corrosion (also known as verdigris) from copper pipes using a combination of natural or chemical cleaning methods. The choice depends on the severity of the corrosion and your preference for natural versus chemical solutions.

Methods for Removing Green Corrosion

Here are a few effective methods:

1. Lemon Juice and Salt

This is a natural and readily available method.

• Ingredients: Lemon, salt, water (for rinsing).
• Procedure:
  1. Cut a lemon in half.
  2. Sprinkle a generous amount of salt onto the cut side of the lemon.
  3. Rub the salted lemon directly onto the corroded copper pipe. The lemon's acidity helps dissolve the corrosion, while the salt acts as a gentle abrasive.
  4. Apply moderate pressure and continue rubbing until the corrosion starts to loosen.
  5. Rinse the area thoroughly with water.
  6. Dry the pipe with a clean cloth.
  7. Repeat as necessary for stubborn corrosion.

2. Vinegar and Salt Paste

Another effective natural solution.

• Ingredients: White vinegar, salt, flour (optional, to make a paste).
• Procedure:
  1. Mix equal parts white vinegar and salt to form a solution. You can add a small amount of flour to create a paste, which helps the mixture adhere to the pipe.
  2. Apply the vinegar-salt mixture or paste to the corroded area.
  3. Let it sit for 30 minutes to an hour.
  4. Scrub the area with a non-abrasive pad or cloth.
  5. Rinse thoroughly with water and dry.

3. Commercial Copper Cleaners

For heavy corrosion, a commercial copper cleaner might be necessary.

• Important Considerations:

  • Read the Label: Always read and follow the manufacturer's instructions carefully.
  • Safety Precautions: Wear gloves and eye protection to avoid skin and eye irritation. Ensure adequate ventilation.
  • Types of Cleaners: Choose a cleaner specifically designed for copper.

• Procedure:

  1. Apply the cleaner to the corroded area according to the product instructions.
  2. Let it sit for the recommended time.
  3. Scrub with a non-abrasive pad or cloth.
  4. Rinse thoroughly with water.
  5. Dry the pipe.

4. Baking Soda Paste

Baking soda is a mild abrasive and can help remove light corrosion.

• Ingredients: Baking soda, water.
• Procedure:
  1. Mix baking soda with a small amount of water to create a paste.
  2. Apply the paste to the corroded area.
  3. Scrub gently with a cloth or sponge.
  4. Rinse with water and dry.

Prevention

After cleaning, consider these preventative measures:

• Keep the area dry: Moisture accelerates corrosion.
• Ventilation: Ensure proper ventilation in areas with copper pipes.
• Protective Coatings: Apply a sealant or protectant specifically designed for copper to prevent future corrosion.