One of the biggest advantages of owning a metal carport is how low-maintenance it is compared to wood or canvas structures. But while metal buildings are incredibly durable, even the toughest carport requires some occasional care to perform its best for decades to come.

In this metal carport maintenance guide, we’ll walk you through the most important tasks to keep your carport in top condition—without adding extra hassle to your schedule. Regular inspections and simple upkeep can go a long way in preserving your structure’s strength, appearance, and value.

Cleaning Your Metal Carport

Although steel is naturally resistant to mold and decay, a buildup of dirt, leaves, or bird droppings can cause surface wear over time. Cleaning your carport just a couple of times per year can help maintain its protective finish and keep it looking sharp.

How to clean a metal carport:

• Use a garden hose or low-pressure washer for general debris
• Mix mild soap (like dish detergent) with water for deeper cleaning
• Avoid abrasive scrubbers or bleach, which can damage the coating
• Rinse thoroughly to remove all soap and residue

Pro tip: Clean your carport in the spring and fall, or after major weather events that leave debris.

Inspect for Rust or Corrosion

Galvanized steel is designed to resist rust, but no material is completely immune—especially at connection points where moisture can collect. Make it a habit to check your carport for any early signs of corrosion.

Focus your inspection on:

• Bolts, screws, and fasteners
• Joints and roof seams
• Underside of panels and base rails

If you notice any rust spots, lightly sand the area and apply a rust-inhibiting primer and touch-up paint. Catching these issues early will prevent larger structural problems down the road.

Check Anchors and Ground Stability

Your metal carport’s anchors are what keep it standing tall, especially in strong winds. Over time, shifting ground, erosion, or heavy rains can cause anchors to loosen or tilt.

Inspect each anchor:

• Make sure it’s fully embedded and hasn’t pulled up
• Check for visible movement or leaning
• Re-tighten bolts if they feel loose

For ground-installed units, pay attention to drainage around the site. You may need to reinforce the base or add gravel to stabilize the soil.

Repainting or Coating Over Time

Most modern carports come with baked-on enamel finishes that last for years, but depending on your local climate and sun exposure, repainting or recoating may eventually be necessary.

Repaint your carport if you notice:

• Faded or peeling paint
• Surface rust that’s been removed
• Visible wear from hail or debris

Use a metal-safe exterior paint with UV protection to restore appearance and add another layer of defense. This is especially useful for carports used for long-term equipment or vehicle storage.

Schedule Preventive Maintenance

Setting up a simple maintenance checklist—performed once or twice per year—is often all it takes to keep your carport looking great and functioning properly. The best time to do this? Spring and fall.

A few reminders:

• Clean thoroughly
• Inspect for damage
• Tighten fasteners and check anchors
• Touch up paint as needed

Ready for a Durable, Low-Maintenance Carport?

If you’re still in the market for a carport that combines strength with minimal upkeep, explore our Custom Metal Carports. Designed to withstand the elements and built to last, Rocket City Metal & Portable Buildings offers expertly installed solutions throughout Huntsville, Meridianville, and beyond.