How to Clean Rust Off Metal Cabinets

Removing rust from metal cabinets can seem like a daunting task, but with the right techniques and products, it can be done effectively. Proper rust removal will not only improve the look of your cabinets, but also extend their lifespan by preventing further corrosion. This comprehensive guide will provide useful tips and step-by-step instructions to help you get rid of rust and restore the shine to your metal cabinets.

Why Rust Develops on Metal Cabinets

Rust is an iron oxide that forms when iron or steel is exposed to moisture and oxygen. Metal kitchen and bathroom cabinets are susceptible to rusting for a few key reasons:

• Exposure to Water: Splashes from sinks and high humidity levels from steam (like when taking hot showers) can deposit moisture onto cabinet surfaces. This provides an environment for rust to form.
• Lack of Maintenance: Failure to promptly wipe down cabinet exteriors after they get wet allows water to evaporate and leave behind minerals that oxidize to form rust.
• Proximity to Heat Sources: Heat from stoves, ovens and other appliances can accelerate the rusting process by increasing the rate of oxidation.
• Scratches and Imperfections: Small scratches, cracks or holes in the cabinet’s protective coating expose the bare metal underneath to moisture and oxygen. This damaged area becomes a starting point for corrosion.

Regular polishing, prompt drying after cleaning, and keeping cabinet exteriors free of scratches can help prevent rust from occurring in the first place. But once present, proper removal techniques are required to fully restore cabinet appearance and durability.

Cleaning Solutions for Rust Removal

Certain cleaning solutions work better than others when it comes to tackling rust buildup on metal. Here are some of the most effective options:

White Vinegar

The high acetic acid content in white vinegar makes it a very effective rust remover. It helps dissolve rust and provides a protective coating to prevent future corrosion.

Pour undiluted vinegar directly onto rusted areas and let it soak for 5-10 minutes before scrubbing and rinsing off. For less pronounced rust, dilute vinegar with an equal amount of warm water and wipe the solution onto affected areas using a soft cloth.

Baking Soda

Baking soda is a great mildly abrasive cleaner that can help lift rust when used in combination with vinegar. The chemical reaction between baking soda (base) and vinegar (acid) breaks down the rust further.

Make a paste by mixing 3 parts baking soda with 1 part water. Spread paste onto rusted spots and spray white vinegar over the top. Let fizz for 2-3 minutes before scrubbing and rinsing.

Lemon Juice

Like vinegar, lemon juice contains acidic citric acid that can dissolve rust deposits. Cut a lemon in half and rub the cut side directly onto the rusted metal surface. Let sit for 5 minutes before rinsing off. For a more intensive treatment, combine equal parts lemon juice and baking soda into a paste.

Hydrogen Peroxide

Hydrogen peroxide is another acidic oxidizer that reacts with rust to lift it off metal surfaces. Soak a soft cloth in a 50/50 mixture of hydrogen peroxide and warm water. Apply it onto the affected area and let sit for 15 minutes before scrubbing lightly and rinsing.

Salt

Plain table salt works as a gentle scouring agent to remove rust. Sprinkle salt directly on the rusted spots. Use half of a lemon or lime to wet the salt, then scrub with the fruit wedge to create a mechanical cleaning action. Rinse thoroughly after scrubbing.

Supplies for Rust Removal

Aside from cleaning solutions, having the right tools on hand will make the rust removal process much smoother:

• Gloves – Wear protective rubber gloves to keep hands from getting stained and irritated
• Scrub sponges – Use gentle abrasive scrub sponges for added scrubbing power
• Old toothbrushes – Helpful for scrubbing in hard to reach areas
• Microfiber cloths – For applying cleaners and drying
• Plastic paint scraper – Helps lift off stubborn rust deposits
• Sandpaper – Fine grit sandpaper (220+) can smooth scratches post-cleaning
• Rust remover gel/spray – Specialty chemical removers available at hardware stores
• Tarp – For protecting flooring/surfaces from splatters
• Eye protection – Safety glasses to shield eyes from splashing chemicals

Step-by-Step Rust Removal Process

Follow these steps for best results when tackling rust removal on metal kitchen and bathroom cabinets:

1. Prep the Area

• Remove all contents from cabinets and surrounding countertops.
• Place an old sheet or tarp on the floor to protect from potential drips.
• Have all your rust removal supplies and solutions ready to go beforehand.

2. Dry Cleaning

• Wipe down the rusted areas with a dry microfiber cloth to remove any dirt or dust.
• Use an old toothbrush to scrub away loose flakes or particles.
• This helps cleaning solutions penetrate and act more effectively.

3. Apply Rust Remover

• Select your desired rust remover (vinegar, hydrogen peroxide, lemon juice, etc.)
• Soak a clean cloth in the solution and wring out excess.
• Apply the damp cloth directly onto the rusted metal surface.
• Ensure you fully coat the affected area.

4. Let Solution Sit

• Allow the rust remover to sit and work its magic for 5-15 minutes.
• Time varies depending on severity of rust and type of remover used.
• Remover should bubble up and react with the rust deposit.

5. Scrub and Wipe Away

• Use a plastic paint scraper to help lift and remove softened rust.
• Scrub remaining deposits with a sponge or toothbrush.
• Wipe clean using a fresh microfiber cloth and rinse thoroughly.
• Repeat process if needed for stubborn areas.

6. Dry and Protect

• Wipe cabinets completely dry with a clean cloth once rust removed.
• Apply a thin coat of metal polish or sealant to help prevent recurrence.
• Allow cabinets to fully dry before replacing contents and using again.

7. Address Severe Rust

For severely rusted cabinets:

• Remove doors/drawers to make cleaning easier.
• Use 80-120 grit sandpaper to help remove heavy rust layers.
• Spot prime any bare metal after cleaning before sealing.

Tips for Preventing Rust on Metal Cabinets

Once you’ve put in the elbow grease to remove rust, you’ll want to take measures to prevent its return. Here are some handy tips:

• Wipe spills promptly and dry cabinet exteriors after cleaning.
• Apply a protective wax coating 1-2 times per year.
• Keep cabinets well ventilated to prevent moisture buildup.
• Install padding undercabinet lighting to prevent heat damage.
• Avoid nicking or scratching the cabinet finish.
• Use rugs or bath mats on the floor to reduce moisture exposure.
• Consider entertaining rust-inhibiting cabinet liner.
• Maintain plumbing fixtures to prevent leaks near cabinets.

When to Call a Professional

While DIY rust removal is possible in many cases, extensive rust may require professional help. Consider hiring a refinishing pro if:

• Rust has penetrated through the cabinet’s outer coating.
• You want to repaint cabinets for a color change.
• Cabinets contain lead paint or other hazardous materials.
• Dings, scratches or holes in cabinets need repairing.

A professional refinisher has specialty tools, chemicals and training to handle severe cabinet rust and corrosion that is beyond a simple cleaning. They can also repaint the cabinets to not only cover up rust damage, but prevent future recurrence.

Frequently Asked Questions

Below are answers to some common questions about removing stubborn rust from metal kitchen and bathroom cabinets:

How long does it take to remove rust from cabinets?

• Light surface rust can be removed in 30-60 minutes using DIY methods. Heavier rust buildup will take 2-3 rounds of intensive cleaning spanning several hours. Severe rust may require sanding/refinishing and take most of a day.

What is the fastest way to remove rust?

• Spray-on specialty rust remover chemicals work the quickest for light to moderate rust. Apply, let sit 5 minutes, then rinse. Vinegar or hydrogen peroxide can work in 15-30 mins.

Will vinegar damage my cabinets?

• White vinegar is safe for most cabinet finishes and won’t cause damage. It may however discolor lower quality paint over time with repeated use. Test first in an inconspicuous spot if concerned.

How do you remove rust from painted cabinets?

• Use a gentle cleaner like dish soap and baking soda. Softly scrub with a sponge in the direction of the wood grain. Avoid abrasives that can scratch the paint.

What kind of sandpaper is best for removing rust?

• Coarse 80-120 grit sandpaper works best for removing heavy rust from metal. Finish by sanding with 220-400 grit to smooth and prepare surface for painting/coating.

Can I use WD-40 to remove rust from cabinets?

• While WD-40 helps detach rust, it doesn’t effectively remove or neutralize it. Use it in combination with other cleaners, but avoid directly on paint as it can stain and damage the finish.

Conclusion

Rust removal may seem difficult, but with a little bit of elbow grease and the right rust-fighting products you can restore the clean look of your kitchen or bathroom cabinets. Be sure to address rust issues promptly to prevent permanent damage. Maintain your cleaned cabinets by promptly drying after use, applying protective wax, and fixing any scratches or scrapes immediately.