Can I Rust Proof a Metal Cabinet?

Rust proofing a metal cabinet can help extend its life and maintain its appearance. With some simple steps, you can protect your cabinet from the damaging effects of rust and corrosion. This comprehensive guide will teach you everything you need to know about rust proofing metal cabinets.

Why Rust Proof a Metal Cabinet?

Rust proofing a metal cabinet provides several important benefits:

Prevent Rust and Corrosion

Exposing unprotected metal to moisture causes rust, a reddish-brown crust that eats away the surface. Rust weakens the integrity of the metal, causing pits, flakes, and eventually, holes. Proper rust proofing forms a protective barrier to block moisture and oxygen from reacting with the bare metal.

Maintain Appearance

Rust is unsightly and damages the nice uniform surface of metal. A rusted cabinet looks old, neglected, and unappealing. Rust proofing maintains the cabinet’s shiny polished metal appearance.

Extend Lifespan

Rust shortens the lifespan of metal products. As rust flakes off, it reduces the thickness and durability of the remaining metal. By preventing rust, you can keep the cabinet solid and intact for many more years of use.

Avoid Damage to Contents

Advanced rust can cause metal to swell, warp, or develop sharp edges and pits. This damage could ruin items stored inside the cabinet, like clothing, documents, or dinnerware. Rust proofing protects both the cabinet and its contents.

Increase Resale Value

A rust-free cabinet retains more monetary value if you ever want to sell or repurpose it. Rust proofing preserves the cabinet in excellent condition.

How Does Rust Form on Metal?

Before learning how to prevent rust, it helps to understand what causes it in the first place. Rust forms through an electrochemical process called oxidation. Here is how it happens:

1. Oxygen Reacts with Metal

When oxygen molecules come into contact with bare metal, they oxidize the surface, splitting the metallic bonds. This forms metal oxides – the basic components of rust.

2. Water Acts as Electrolyte

In chemistry, an electrolyte is a substance that allows electricity to pass through. In rust formation, water acts as the electrolyte. The water absorbs salt, acids, dirt, pollution, and other conductive particles from the air and environment.

3. Electric Current Transfers Ions

The electrolytic water enables electrical currents to flow across the metal’s surface. This transfers iron ions from the metal into the water. The iron ions bond with oxygen atoms to form iron oxide – the most common component of rust.

4. Rust Accumulates

As the iron oxide builds up, it appears as the classic reddish rust color. Rust is porous and flaky, so it easily spreads over the surface as it accumulates.

5. Rust Spreads

With prolonged exposure to moisture, rust continues eating away the base metal. As it spreads, rust weakens and damages the metal.

Now that you know how rust forms, let’s explore your options for preventing it.

5 Ways to Rust Proof a Metal Cabinet

There are several effective methods to protect a metal cabinet from rust and corrosion:

1. Wipe with Cooking Oil

Wiping down your cabinet with a thin layer of cooking oil like vegetable, canola, or olive oil will help exclude moisture. The oil fills in microscopic pores in the metal. Since oil and water don’t mix, the oil creates a water-repelling barrier. Re-apply once a month or whenever the surface appears dull.

2. Apply Boeshield T-9

This specialized waterproof lubricant protects against rust and also prevents squeaks. Just spray or wipe it on bare metal and let it dry. It leaves a long-lasting waxy film. Reapply annually or as needed. The unique formula lubricates moving parts too.

3. Use Paste Wax

Paste wax formulated for cars provides durable protection for metal. After cleaning the cabinet, apply wax with a clean cloth and let it haze over. Then buff with a dry cloth to remove residue. Wax every 1-2 years or when water beads up instead of spreading.

4. Paint or Powder Coat

Applying paint or powder coating essentially seals the metal surface under a plastic shell. This completely blocks moisture and oxygen from contacting the base metal. For best results, opt for high-quality cabinetry paint or powder coating intended for metal.

5. Replace Hardware with Stainless Steel

Swapping out any iron or steel hardware (handles, hinges, screws) for rust-resistant stainless steel hardware will prevent rust at weak points. Choose brushed nickel or chrome for a matching polished look.

Step-by-Step Guide to Rust Proofing a Cabinet

Follow these simple steps to properly prepare and rust proof your metal cabinet:

Clean the Surface

Use TSP cleaner or a concrete/metal degreaser to thoroughly clean dust, grease, and grime off the cabinet. This removes any contaminants that could interfere with rust proofing adhesion. Rinse well and let dry fully.

Sand Gently

Lightly sanding with fine grit sandpaper roughens up the surface for better adhesion. This also removes any existing rust spots. Clean away all sanding residue.

Apply Rust Proofing

Use your rust proofing method of choice, whether a wax, liquid coating, or painting the cabinet. Follow product instructions carefully. Allow proper drying time before using the cabinet again.

Maintain Protection

Reapply rust proofing regularly as needed, like annually or every few months. Check for any new rust spots and immediately clean and re-coat those areas. Frequently wipe down the cabinet to remove dust and grime.

FAQs About Rust Proofing a Metal Cabinet

Some common questions about preparing and maintaining a rust-proof metal cabinet include:

Does Paint Provide Good Rust Proofing?

High-quality primer and paint formulated specifically for metal provide excellent rust proofing. The coating seals the surface from moisture and oxygen. For severe rust, use a rust converter primer first. Then apply two finish coats of outdoor-rated metal enamel.

How Do I Remove Rust Before Rust Proofing?

Light rust can be sanded away with fine grit sandpaper. For heavy rust, use a wire brush or wheel on a power drill. Vinegar or rust removal solutions also dissolve rust chemically. Just wipe the dissolved rust away and rinse the area thoroughly.

Should I Remove Cabinet Doors for Rust Proofing?

For the easiest, most thorough application, removing the doors to treat separately is best. Lay doors flat on sawhorses or across chairs. Be sure to coat cabinet interiors and the sections around hinges.

How Often Should I Reapply Rust Proofing Coatings?

Many liquid coatings like oil, wax or T-9 can be reapplied every 1-2 months for optimal protection. Paint or powder coating may last 3-5 years before needing fresh coats. Check manufacturer’s specs for reapplication timeline.

What Areas are Most Prone to Rusting?

Edges, screw holes, bare metal patches, corners, crevices, and any section with damage to the coating are most vulnerable to rust. Pay extra attention to these high-risk zones when applying rust proofing.

Can I Use WD-40 to Prevent Rust on a Cabinet?

WD-40 works very briefly to displace moisture. But it evaporates and dries quickly. For long-term results, use heavier oils, waxes, paints, or other coatings specifically designed for rust protection. Reapply WD-40 daily at most.

Conclusion

Rust proofing a metal cabinet helps safeguard it against unsightly and destructive rust. With a simple DIY rust prevention treatment using oils, waxes, paint, or other sealants, you can keep your cabinet’s metal preserved in top condition for many years. Be sure to thoroughly prepare the surface, apply your chosen rust proofing agent properly, and maintain it regularly. With just occasional upkeep, your cabinet will stay shiny and free of rust. What rust proofing method do you think you will try first? Let us know if you have any other questions about keeping metal cabinets rust-free.