How To Remove Rust Stains From Vinyl Siding

How To Remove Rust Stains From Vinyl Siding
  • Author: Amanda Arnold
  • Posted On: June 20, 2022
  • Updated On: August 21, 2023

When metallic components mix with oxygen, rust can form on practically any surface exposed to the environment or moisture in general. One of the first places to look for this kind of activity as a homeowner is on your vinyl siding.

On the vinyl siding, rust stains are a prevalent issue. They’re difficult to get rid of, especially if they’ve been there for a while. Scrubbing with soap and water won’t be enough to remove rust stains. Don’t worry; items are available for this purpose, but you may find that using one of the methods suggested in this article is more convenient.

What Are The Main Reasons For Rust Stains On Vinyl Siding?

The first step is to determine what’s causing the issue since this will help you figure out how to remove rust spots from vinyl siding.

Old Gutters And Downspouts

You’ll need to repair if you have rust stains on your siding from old metal gutters or downspouts. The most common cause of rust stains on siding is water, with metal flashing and gutter difficulties being the main causes.

When water comes into contact with metal, you will likely see rust streaks on your siding.

Acid Rain And Clogged Gutters

Rust stains on vinyl siding can also be caused by acid rain. Acid rain can absorb iron from the environment and deposit it on a surface, resulting in rust streaks. Sulfates and nitrates are substances that, if left untreated, can harm a surface.

Another cause of rust spots on vinyl siding is this. When it rains, surplus water can pool around the gutters, causing leaks that cause excessive amounts of iron-rich water to seep into the siding.

Inappropriate Vinyl Sides Cleaning

There isn’t anything to be concerned about if the rust stains are caused by dirt. The rise in iron levels caused by dirt and fertilizers used on plants can cause yellowing of vinyl siding, which will most likely occur during the springtime.

Sprinkler systems and powerful wind gusts can stir up dirt and deposit it on your siding. Rust can form on your vinyl siding if you don’t wash it often enough.

Steps To Remove Rust From Vinyl Siding

Homeowners frequently encounter rust stains on their vinyl siding. Rust-stained siding devalues properties significantly and should be addressed as soon as feasible. Although the procedure can be time-consuming, it often does not necessitate the assistance of a specialist.

Prepare A Natural Rust Cleaner

To make a natural cleaning solution, you can mix white vinegar, baking soda, and lukewarm water. Remove the liquid off the vinyl siding with a microfiber towel. Allow the mixture to rest for an hour before wiping it away with soap and water.

You can also make a lot more efficient rust remover by combining detergent powder, a mild cleaning detergent, liquid detergent bleach, and one gallon of water. This treatment is far more effective at removing stains and other unattractive areas off vinyl siding.

You can easily remove rust from vinyl siding using a DIY cleaning solution. It might help with minor and light rust stains. It might not work as effectively if you’re dealing with large, tenacious rust stains.


For deeply embedded rust on vinyl siding, sanding would be the best option. Scrub away as much of the rust stain as possible, then sand the area until the usual sheen of the vinyl siding appears.

Sanding after applying a cleaning chemical to the rust stain works best. Allow it to dry before sanding it smooth.

Pressure Washing

One of the most efficient methods for removing rust is pressure washing vinyl siding. Dirt, rust, and other stains can be removed off your exterior cladding using water. Power washing is an option if you need to go a step further. Even though both techniques use high-pressure water to remove rust, this one is more effective since it uses hot water.

The pressure washer’s wand must be at eye height for you to see the target well. If you power washes at this angle, water could enter the vinyl and cause water damage.

Use Oxalic Or Hydrochloric Acid

Scrubbing with oxalic acid, which is effective on obstinate rust stains, is the most popular method. It is, however, hazardous to both the environment and human health. Hydrochloric acid is another possibility, as it is less harmful to the environment than oxalic acid.

Fill a spray bottle halfway with hydrogen peroxide and halfway with hydrochloric acid. Spray the solution on the stain and wait a few minutes before scrubbing with a toothbrush. To avoid damage to your home’s siding, rinse with clean water immediately.

Use Metal Surface Cleaning Tools

There are additional options you can attempt if you don’t want to mix chemicals or if they don’t work. Use a wire brush or other instruments to clean metal surfaces to remove rust spots from vinyl siding. You can also use baking soda, hydrogen peroxide, or vinegar, all common household items.

Please read and follow all safety precautions if you are doing this yourself to save money instead of hiring someone else to do it.

Bottom Line

If your vinyl siding gets rusted, fix or clean them as soon as possible. Otherwise, you might need to hire professionals at a double cost to get the proper rust cleaning. On the other hand, as soon you remove the rust from vinyl siding, the less likely their harmful effects will spread and inflict more harm than is necessary.

We have discussed the best methods in this post for all our readers and visitors to help them get rid of rust stains from vinyl siding. Hopefully, you can keep your home exterior shiny and free from rust stains after considering these points or tips.

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Author: Amanda Arnold

Amanda has been working with ConstructionHow since 2021. Her experience spans over 5 years in the creative niche such as home decor and trends, landscaping, renovations, and custom architectural values. As a home designer expert, she has a keen eye for the latest home improvement trends with accurate facts that readers find impossible to ignore. Being invested in home-building trends is how she has gained her lucrative expertise exploring more to bring a positive ambiance for all homeowners (and even tenants!). Currently, she lives in a beautiful beach home, a source of fascination for her.