How To Repair a Rusted Dishwasher Rack

Over time, the plastic coating on dishwasher racks wears away, exposing the metal underneath. When this happens, the metal is vulnerable to rust, which can weaken the rack, cause further deterioration, and even leave rust stains or scratches on your dishes. 

Fortunately, replacing the entire rack—which can cost anywhere from $50 to $150—isn’t your only option. With a few simple tools and a dishwasher rack repair kit, you can extend the life of your existing rack and keep your dishwasher running smoothly.

Watch the video above for a step-by-step guide to repairing your rusted dishwasher rack. In the article, I also provide some insight into why racks rust and when you need to replace rather than repair.

Why Do Dishwasher Racks Rust?

Dishwasher racks are coated in a layer of vinyl or plastic that protects the metal underneath. However, this coating can break down over time due to regular wear and tear, improper loading, harsh detergents, or hard water buildup.

Once the protective layer is compromised, water reaches the metal, leading to rust formation.

Step-by-Step Repair Guide

You don’t need to replace your dishwasher rack at the first sign of rust. Follow these steps to repair it and prevent further damage:

1. Remove loose rust. Use wire cutting pliers to snip off any rusted or broken tine tips.
2. Smooth the surface. Lightly sand the exposed metal to remove rust and create a smooth surface.
3. Apply rack coating. Use a dishwasher rack repair kit (available at appliance stores) to seal the exposed metal. For best results, dip the tine tips directly into the coating.
4. Let it dry. Allow the coating to dry for at least 24 hours before using the dishwasher.

When Should You Replace Your Dishwasher Rack?

While minor rust spots and missing tine tips are easy to repair, there are times when replacing the entire rack—or even the dishwasher itself—makes more sense. Consider replacing the rack if:

• Rust has spread. If rust covers large sections of the rack, a repair likely won’t hold up long-term.
• Multiple tines are broken or missing. If too many prongs are damaged, your dishes won’t sit securely, leading to poor cleaning performance.
• The rack is warping or breaking apart. Significant structural damage makes the rack unsafe to use.

If your dishwasher is nearing the end of its lifespan—typically 10 to 15 years—it may be more cost-effective to replace the entire unit instead of buying a new rack. Older dishwashers are less efficient, and investing in a new, energy-efficient model can save you money on water and electricity bills.

Should You Repair or Replace Your Rusted Dishwasher Rack?

If your dishwasher rack only has a few rusted spots or minor damage, a simple repair kit can extend its lifespan and save you money. However, if rust has spread extensively, the rack is structurally compromised, or your dishwasher is already over a decade old, replacement may be the better option.