Oxidation on siding is a natural process that occurs when the vinyl or metal siding is exposed to oxygen and sunlight over an extended period of time. This process can cause the siding to become dull, chalky, and discolored.

Vinyl siding is especially susceptible to oxidation due to its composition, which can break down over time when exposed to the elements. Metal siding can also experience oxidation, which can cause rust or other types of corrosion.

Oxidation can be caused by a variety of factors, including exposure to UV rays from the sun, pollution, and other environmental factors. It can also be exacerbated by the use of harsh chemicals or cleaning agents that can strip away the protective coating on the siding.

To prevent or minimize oxidation on your siding, it's important to take steps to protect it. This includes regular cleaning and maintenance, avoiding the use of harsh chemicals or cleaning agents, and using a protective coating or sealant to help prevent damage from the elements. If oxidation has already occurred, it may be possible to remove or minimize the damage with specialized cleaning products or by painting or replacing the affected siding. It's always a good idea to consult with a professional to determine the best course of action for addressing oxidation on your siding.

Removing oxidation from siding can be a challenging task, but it is possible with the right tools and techniques. Here are some steps you can take to remove oxidation from siding:

1.  Clean the siding: Start by cleaning the siding with a soft-bristle brush and a mild cleaning solution. This will remove any dirt or debris from the surface of the siding and prepare it for the next step.

2.  Apply a specialized cleaning solution: There are many specialized cleaning solutions available that are designed to remove oxidation from siding. These solutions typically contain a mixture of detergents and other chemicals that break down the oxidation and make it easier to remove.

3.  Scrub the siding: Use a soft-bristle brush or a pressure washer with a low-pressure setting to scrub the cleaning solution into the siding. Be careful not to use too much pressure, as this can damage the siding.

4.  Rinse the siding: After scrubbing the siding, rinse it thoroughly with a pressure washer or a hose. Make sure to remove all of the cleaning solution and any loosened oxidation.

5.  Repeat if necessary: Depending on the severity of the oxidation, you may need to repeat the cleaning process several times to remove all of the oxidation.

6.  Apply a protective coating: Once the oxidation has been removed, consider applying a protective coating or sealant to the siding to help prevent future damage.

It's important to note that removing oxidation from siding can be a delicate process, and it's always a good idea to consult with a professional before attempting to clean or repair your siding. They can help you determine the best course of action for your specific situation and ensure that the job is done safely and effectively.