Metal roofs are renowned for their durability, longevity, and aesthetic appeal. 

However, like any roofing material, they can develop issues over time that necessitate repairs. 

Whether you’re dealing with minor leaks or more significant structural problems, this guide will walk you through the essentials of metal roof repair.

Understanding Common Metal Roof Problems

Before diving into the repair process, it’s essential to identify the common issues that affect metal roofs. These include:

  • Leaks and Water Damage: Often caused by improper installation, aging sealant, or punctures from debris.
  • Rust and Corrosion: Typically a result of prolonged exposure to moisture, significantly if the protective coating is compromised.
  • Loose or Missing Fasteners: Fasteners can loosen over time due to thermal expansion and contraction.
  • Panel Damage: Hail, falling branches, or foot traffic can dent or puncture metal panels.

Inspection and Diagnosis

Conducting a thorough inspection is crucial for diagnosing the problem accurately. Here’s how you can perform an adequate inspection:

  • Visual Inspection: Look for visible signs of damage, rust, or loose fasteners. Pay special attention to seams, joints, and penetrations like vents and skylights.
  • Interior Inspection: Check the attic or ceiling for signs of water damage, such as stains or mold growth.


Metal roof repair



  • Water Testing: If you suspect a leak but can’t locate it, use a garden hose to simulate rainfall and observe where the water infiltrates.

Tools and Materials Needed for Repair

Gathering the right tools and materials is essential for a successful repair. Here’s a list of what you might need:

  • Metal roof sealant or roofing cement
  • Replacement fasteners
  • Metal patches (for larger holes)
  • Rust inhibitor and primer
  • Roofing screws
  • Screw gun or drill
  • Wire brush
  • Sandpaper
  • Clean rags

Step-by-Step Repair Process

Repairing Leaks and Small Holes

Clean the Area: Remove any dirt, rust, or old sealant around the damaged area using a wire brush and clean rags.

Apply Sealant: For minor leaks, apply a generous amount of metal roof sealant directly to the affected area. Ensure the sealant covers beyond the edges of the hole or crack.

Smooth the Sealant: Use a putty knife to smooth the sealant and ensure it’s well-integrated with the roof surface.

Check for Additional Leaks: After the sealant dries, conduct another water test to ensure the leak is fully sealed.

Patching Larger Holes

Clean and Prepare: As with minor repairs, clean the area thoroughly.

Cut a Patch: Cut a piece of metal that is at least 2 inches larger than the hole on all sides.

Apply Roofing Cement: Spread roofing cement around the hole.

Place the Patch: Press the metal patch into the roofing cement and secure it with roofing screws.

Seal the Patch: Apply additional roofing cement around the edges of the patch to ensure a watertight seal.

Addressing Rust and Corrosion

Remove Rust: Use a wire brush or sandpaper to remove rust from the affected area.

Apply Rust Inhibitor: Coat the area with a rust inhibitor to prevent future corrosion.

Prime and Paint: After the inhibitor dries, apply a primer and a coat of paint that matches the roof color to protect the metal.

Replacing Fasteners

Locate Loose Fasteners: Identify and remove any loose or missing fasteners.

Install New Fasteners: Replace them with new roofing screws, ensuring they are tightly secured but not over-tightened to avoid damaging the metal panels.

Seal Around Fasteners: Apply a dab of sealant around each fastener head to prevent leaks.

Preventative Maintenance

Regular maintenance can significantly extend the lifespan of your metal roof and minimize the need for extensive repairs. Here are some tips:

  • Regular Inspections: Conduct bi-annual inspections, especially after severe weather.
  • Clear Debris: Remove leaves, branches, and other debris that can trap moisture and cause rust.
  • Reapply Sealant: Check and reapply sealant around seams and fasteners as needed.
  • Monitor for Rust: Treat rust spots promptly to prevent them from spreading.

When to Call a Professional

While a confident DIYer can handle many metal roof repairs, some situations warrant professional intervention:


Metal roof repair


  • Extensive Damage: Large sections of damage or structural issues require expert assessment and repair.
  • Complex Roof Designs: Roofs with complex designs or multiple penetrations may need specialized skills.
  • Safety Concerns: Working on a roof can be dangerous. If you’re not comfortable with heights or the scope of the repair, it’s best to hire a professional.


Metal roof repair is a manageable task with the proper knowledge and tools. 

By understanding common issues, performing regular maintenance, and knowing when to seek professional help, you can ensure your metal roof remains a durable and reliable covering for your home. 

Always prioritize safety and take the necessary precautions to protect yourself and your property during the repair process.

If you need professional assistance with your metal roof repair, don’t hesitate to contact us at Eagle Watch Roofing. We’re here to help!


What are common problems with metal roofs?

Common problems with metal roofs include leaks and water damage, rust and corrosion, loose or missing fasteners, and panel damage from hail, falling branches, or foot traffic.

How can I identify leaks in my metal roof?

You can identify leaks by conducting a visual inspection for signs of damage, checking the attic or ceiling for water stains or mold, and performing a water test using a garden hose to simulate rainfall.

What tools and materials do I need for metal roof repairs?

You will need metal roof sealant or roofing cement, replacement fasteners, metal patches, rust inhibitor and primer, roofing screws, a screw gun or drill, a wire brush, sandpaper, and clean rags.

How do I repair small leaks in my metal roof?

To repair small leaks, clean the area around the damage, apply metal roof sealant, smooth the sealant with a putty knife, and perform a water test to ensure the leak is sealed.

How do I patch large holes in my metal roof?

To patch large holes, clean the area, cut a metal patch at least 2 inches larger than the hole on all sides, apply roofing cement around the hole, place the patch, secure it with roofing screws, and seal the edges with more roofing cement.

How can I address rust and corrosion on my metal roof?

Remove rust with a wire brush or sandpaper, apply a rust inhibitor, then prime and paint the area to match the roof color and protect the metal.

What should I do about loose or missing fasteners on my metal roof?

Identify and remove loose or missing fasteners, replace them with new roofing screws, and apply sealant around each fastener head to prevent leaks.

How often should I inspect my metal roof?

Conduct bi-annual inspections of your metal roof, especially after severe weather events.

How can I maintain my metal roof to prevent future damage?

Clear debris regularly, reapply sealant around seams and fasteners as needed, and treat rust spots promptly to prevent them from spreading.

When should I call a professional for metal roof repairs?

Call a professional if you encounter extensive damage, have a complex roof design, or if safety concerns prevent you from comfortably performing the repairs yourself.