how to get rust off vinyl siding
Kristina Davis

Have you ever thought about how to get rust off vinyl siding? If you own or make use of it, it should have crossed your mind.

Vinyl siding has long been recognized as a reliable type of plastic frequently utilized for home exteriors.

It comes in a variety of hues and designs. It imitates wood clapboard and is used for decorating and weatherproofing.

I imagine you’ve seen vinyl siding that has rusted and you’re wondering how to get rid of it. To get a complete explanation, read this article carefully.

One of the best methods for removing rust from your vinyl siding is pressure washing. Water’s cleaning power can help remove stains like rust, dirt, and grime from your exterior cladding. 

Causes of Rust On My Vinyl Siding?

cause of rust

Nearly every surface exposed to moisture or air may rust. One place every homeowner should check for rust is on their vinyl siding.

Some causes of vinyl siding rust are listed below.

Reason #1: Smoke and Dirt Accumulation

Smoke and grime can accumulate over time on certain exterior elements, such as your doors and siding, resulting in brown and black stains that can detract from their visual appeal. 

The streaks are easily eliminated with a thorough scrub, much like algae and fungi.

Reason #2: Streaks Of Algae And Fungi

Algae and fungi can grow in dark, moist areas of vinyl siding.

The two can only leave unsightly green, brown, and black stains behind, which is, fortunately, the worst they can do.

However, their presence may portend a more pressing issue. 

algae growth

Although vinyl is resistant to rot and moisture, the underside of your home is not. Rot and insects both like dark, damp areas. 

Reason #3: Hard Water

Rust stains may appear when vinyl siding is exposed to hard water, which may be the result of a faulty HVAC system or water pipe.

In addition to being unsightly, these stains can harm the external cladding’s finish.

Reason 4#: Deterioration Due To Moisture

Siding that has seen water damage is frequently warped, buckled, or cracked.

Unfortunately, improper waterproofing can allow wind-driven rain and heavy snow to seep beneath your boards.

They’ll weaken your home’s structure and appearance.

It’s critical to take action swiftly to stop more harm to your property if you determine that moisture infiltration is the root of your siding’s degradation.

moisture on surface

Locate a reliable contractor who can assist you with it.

It’ll include removing the damaged boards, installing a weatherproof plastic house wrap, and securing your property with long-lasting siding.

Reason #5: Poor Installation

Unfortunately, the damage to your siding may be the result of poor construction.

When the boards are fastened to the outside of your home too firmly, siding cracks may develop.

Additionally, siding that was installed incorrectly on your outside may over time start to warp, ripple, or become loose.

Note: If your contractor did not install a house wrap beneath your siding, your home may suffer from water damage, which can create cracks, leaks, and other problems.

How To Get Rust Off Vinyl Siding?

get rust off vinyl

When it comes to removing rust from sidings, you can employ a few different techniques. 

Among other things, you should try utilizing a pressure washer, DIY methods, commercial rust removal, painting, or sanding.

Keep reading as we discuss ways on how to get rust stains off vinyl siding.

Option #1: DIY With Vinegar And Lemon Juice

Using just items you currently have in your home, you can easily clean your vinyl siding. 

Rust on vinyl siding can be eliminated with the aid of lemon juice and white vinegar, both of which have citric acid and acetic acid.

Because they are made of natural materials, they are also secure to use.

Option #2: Industrial Rust Remover

If a home remedy fails to remove the rust from your siding, try using an industrial rust remover.

Most hardware shops and online retailers carry these items. 

Always adhere to the manufacturer’s recommendations when using an industrial rust remover.

industrial rust remover

Certain industrial rust removers have harsh chemicals in them that might harm your siding. 

Try using a sponge designed for rust erasing if you are concerned about causing damage to your siding.

These sponges’ soft construction ensures that they won’t scuff or harm your siding.

Tip: Use a stronger professional rust remover if the rust stain is particularly significant.

Option #3: Use A Pressure Washer 

Pressure washing might be needed if a rust stain just won’t go away. Large and persistent rust stains can sometimes be removed using pressure washing. 

Additionally, it can aid in cleaning and removing accumulated grime and dirt on your siding.

pressure washer

Always put your pressure washer on while washing your siding. Using high pressure may damage your vinyl siding.

To prevent the high-pressure stream from harming the siding, you should also utilize a wide nozzle.

Note: Additionally, you have the option of hiring a specialist to help pressure wash the siding for you.

Option #4: Sanding

If the rust stain is small, sanding might get the job done. You’ll need a sander and fine-gritted sandpaper for this.

These items are typically available online or in hardware shops.

Test the effectiveness of the sandpaper first on a tiny section of your vinyl siding before you begin to ensure that it won’t scratch the surface.

Select the appropriate sandpaper, then fasten it correctly onto the sander and proceed to put it on. 

Without using excessive pressure, softly sand over the discoloration caused by the rust.

Sand the surface until there is no sign of the stain, and then wipe off any sanding dust using a microfiber towel.

Small stains on your siding can be successfully removed by sanding. For big or difficult stains, it’s not the greatest solution. 

Note: Additionally, if you are careless, you could harm your siding.

How To Keep Vinyl Siding Clean

keep vinyl siding clean

Vinyl siding is sturdy and can resist the use of a power washer, so cleaning it is quite simple and easy. 

Step #1: Work With The Right Equipment

However, it is advised that you clean your vinyl siding with a soft cloth or brush with soft bristles.

This is to ensure that you are taking good care of it and giving it the best chances for longevity. 

Start at the lower part of the siding and work your way up, thoroughly rinsing along the way to lessen streaks.

Use a basic solution of water and vinegar if your siding isn’t too grimy.

It will be best to use something stronger if you have more severe stains. 

The choices for cleaning products are numerous.

Just make sure you’re using something ecologically friendly, like Simple Green, if there is landscaping nearby. 


Bleach mixed with oxygen is another option. If landscaping is not a problem, a variety of household cleansers can be used to remove stubborn stains.

Step #2: Alternatively, Use A Power Washer

If you don’t want to clean the vinyl siding on your entire house, you might consider using a power washer. 

This can make it simpler for you to eliminate dirt and debris without having to carefully scrub or wipe down every square inch of your house. 

Inquiring with the manufacturer of your siding about potential damage from a power washer may also be beneficial.

By taking the time to do this, you could prevent costly repairs. The above are tips on how to remove rust from vinyl siding.

power washer
Note: If you want to go this route, be sure to lessen the pressure to protect the vinyl siding.


At this point, you should now understand how to get rust off vinyl siding with ease.

Some easier ways of removing rust from your siding include homemade cures, industrial rust remover, and expert pressure washing.

Every one of them has both advantages and drawbacks. Your effort, expense, and safety should all be taken into account when choosing a rust removal technique.

Whatever approach you select, keep in mind that routine upkeep and cleaning are essential to preventing further rust stains.