One of the most common challenges professional cleaners face is removing oxidation—a chalky, faded residue that develops on vinyl siding and painted metal surfaces. This occurs when prolonged exposure to sunlight, moisture, and environmental pollutants breaks down the surface material, leaving behind a dull, powdery film. Beyond reducing curb appeal, oxidation can complicate the cleaning process and lead to inconsistent results if not handled properly.
Unlike standard dirt or grime, oxidation cannot simply be blasted away with high pressure. In fact, excessive pressure can permanently damage surfaces, strip paint, or create uneven “tiger striping.” For contractors in the field, understanding how to safely remove oxidation and selecting the proper cleaner are essential to delivering consistent, high-quality work.
“What do I use to remove oxidation?”
When a contractor reaches out for tech support asking what product to use to remove oxidation, we always recommend Cleansol BC.
This video, submitted by Jeff Cummings of Krystal Klean Exteriors, demonstrates the effective removal of oxidation from a metal storage unit door using Cleansol.
“How do I apply Cleansol BC?”
The first step is to first make the product ready to use.
You dilute the concentrate first:
- 4 parts water : 1 part Cleansol BC
This intermediate mixture is now referred to as “Cleansol”.
No further dilution is needed for gutters and down spouts.
Then, take Cleansol and follow the dilution range below:
- 10 parts water : 1 part Cleansol for difficult cleaning
- 20 parts water : 1 part Cleansol for light soil
Note: Cleaners should not add bleach to this product.
Pre-wet (do not soak) the surface with water. Apply Cleansol with a pressure washer or low-pressure sprayer. For complete soil release with brushless cleaning, apply two quick applications spaced three-to-five minutes apart without rinsing between the applications.
When rinsing, use a wide-angle nozzle. Cleansol has been created to work with all types of available water. Rinse pressure is determined by the skill set of the washer and sensitivity of the surface. When in doubt, consult the substrate manufacturer for the recommended P.S.I. Pressures that mark or damage the surface should always be avoided.
If you are having any difficulty removing deep black stains, such as aluminum oxide or environmental growth, use HD Britenol.
This follow-up video from Jeff Cummings shows him explaining the process his team used when removing the oxidation with Cleansol in the previous video …
The following before-and-after pictures were sent to us by Decker Pro Exteriors LLC in Salem, MO. Cleansol was used to remove the oxidation from the side of this home …
The following side-by-side comparison photo was sent to us by Darren McGallian from Duncan Mobile Wash in Rome, NY. Cleansol was used to remove the oxidation …
If you would like to learn more about Cleansol BC, you can visit its official product page. You can also click to view the Cleansol BC product data sheet.
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