STEEL BUILDING MAINTENANCE: HOW TO KEEP YOUR METAL BUILDING IN TOP SHAPE

One of the biggest advantages of steel buildings is how little maintenance they require compared to wood-framed structures. No termite treatments, no wood rot, no repainting every few years. But low maintenance doesn't mean zero maintenance. A small amount of regular attention keeps your steel building performing and looking great for 50 years or more.

Here's what to do, when to do it, and how to catch small problems before they become expensive repairs.

How Often Should You Maintain a Steel Building?

A thorough inspection twice per year covers most steel buildings. Schedule one in spring after winter weather and one in fall before winter sets in. The full walkthrough takes 30 to 60 minutes for a typical building and catches 95% of issues while they're still easy and cheap to fix. Beyond the twice-yearly inspection, address any obvious problems like leaks or damage immediately rather than waiting for the next scheduled check.

What Should You Inspect?

Roof and Panels

The roof is your building's first line of defense. Walk around the building and look up at the roof panels, or if safe, access the roof directly.

Check for:

• Loose or missing screws and fasteners
• Panels lifting at edges or seams
• Dents or damage from fallen branches or hail
• Rust spots, especially at cut edges and fastener points
• Sealant degradation at ridge caps, eaves, and panel laps

Loose fasteners are the most common issue and the easiest to fix. A single loose screw lets water in, and water causes more damage than any other factor. Carry replacement screws during your inspection and tighten or replace as you go.

Gutters and Downspouts

Clogged gutters cause water to back up under roof panels, leading to leaks and eventual panel corrosion. This is completely preventable.

Maintenance tasks:

• Clean gutters at least twice per year (more if you have overhanging trees)
• Check that downspouts direct water at least 3 feet away from the foundation
• Look for sagging sections that indicate damaged hangers
• Verify end caps are sealed and not leaking

Doors and Hardware

Overhead doors, walk doors, and their hardware take constant use. They're the most mechanically complex part of your building and the most likely to need attention.

Check and maintain:

• Lubricate overhead door tracks, rollers, and hinges annually
• Inspect door seals and weatherstripping for gaps or damage
• Test overhead door balance and auto-reverse safety features
• Tighten door frame hardware that loosens from vibration
• Touch up paint on door frames where it chips

Foundation and Slab

Your concrete foundation doesn't need much attention, but look for these warning signs:

• Cracks wider than a quarter inch (hairline cracks are normal)
• Settlement or sinking on one side
• Water pooling against the foundation
• Gaps between the base trim and foundation

Address drainage issues immediately. Standing water against a steel building foundation causes corrosion at the base, which is one of the most expensive repairs on a metal building.

Ventilation Systems

Proper ventilation prevents condensation inside your building, which is the leading cause of interior corrosion and mold.

Check:

• Ridge vents are clear and functional
• Louvers and exhaust fans operate correctly
• Turbine vents spin freely
• No bird nests or debris blocking ventilation openings

How Do You Handle Rust on a Steel Building?

Catching rust early is everything. A small rust spot treated promptly costs nothing. The same spot ignored for years can require panel replacement.

Minor Surface Rust

For small areas of surface rust:

1. Sand the rusted area with 120-grit sandpaper or a wire brush 2. Clean the area with a degreaser and let it dry 3. Apply a rust-converting primer 4. Touch up with matching paint (your building manufacturer can provide touch-up paint)

Preventing Rust

Rust starts where the protective coating is compromised. The most vulnerable areas are:

• Cut panel edges: Where panels were cut during installation, the cut edge has no factory coating
• Fastener penetrations: Screw holes through the panel coating
• Scratches and dents: Physical damage exposes bare steel
• Base of panels: Where ground contact or splash-up occurs

Apply touch-up paint to any bare metal you find during inspections. A $15 can of matching touch-up paint prevents thousands in future panel replacement.

What About Snow and Ice?

Steel buildings handle snow loads well when properly engineered. But a few precautions keep things safe:

• Don't let snow accumulate unevenly: If you have a lean-to or adjacent structure, snow can drift and pile up in the valley between structures, exceeding the designed load
• Keep gutters clear: Ice dams in gutters cause water to back up under roof panels
• Watch for ice buildup at doors: Overhead doors can freeze to the ground if ice builds up at the base
• Clear snow from ventilation: Snow-blocked vents cause condensation problems inside

In most of Arkansas, heavy snow loads are uncommon, but ice storms can be significant. After any major ice event, inspect your roof and gutters as soon as conditions are safe.

How Do You Clean Metal Building Panels?

Cleaning metal panels isn't just cosmetic. Dirt, pollen, and organic debris hold moisture against the panels and can degrade the paint finish over time.

Recommended cleaning method: 1. Rinse panels with a garden hose to remove loose dirt 2. Wash with mild detergent (dish soap works fine) and a soft brush or cloth 3. Rinse thoroughly from top to bottom 4. For stubborn stains, use a non-abrasive cleaner specifically designed for painted metal

Avoid:

• Pressure washers on high settings (can damage paint and force water into seams)
• Abrasive cleaners or scrub pads
• Harsh chemicals, solvents, or bleach
• Cleaning in direct sunlight (causes streaking)

Most buildings only need cleaning once per year. Buildings near trees, dusty roads, or industrial areas may need it more frequently.

What's a Good Annual Maintenance Schedule?

Spring (March-April)

• Full exterior inspection after winter
• Clean gutters and downspouts
• Check for winter storm damage
• Wash exterior panels
• Lubricate all door hardware
• Inspect and repair caulking and sealant

Fall (September-October)

• Full exterior inspection before winter
• Clean gutters again
• Check weatherstripping on all doors
• Touch up any paint chips or rust spots
• Verify ventilation systems work properly
• Clear debris from around foundation

As Needed

• Tighten loose fasteners immediately
• Address leaks the day you find them
• Replace damaged weatherstripping
• Remove debris after storms

When Should You Call a Professional?

Handle simple maintenance yourself. Call a professional for:

• Roof panel replacement
• Structural damage from severe weather
• Foundation settlement or cracking
• Major rust requiring panel replacement
• Overhead door spring or cable issues (dangerous under tension)

Your original steel building contractor is the best resource for major repairs because they understand your building's specifications and construction. Contact D&P Steel Erection for maintenance questions or repairs on any steel building project.