Introduction: The Strengths and Weaknesses of Metal Roofing
Metal roofing is celebrated for its durability, energy efficiency, and long lifespan, but like any roofing system, it isn’t immune to problems. Whether it’s residential or commercial property, understanding the most common metal roofing issues—and how to solve them—is essential for maximizing the value and performance of your investment.
This blog explores the most frequently encountered challenges in metal roofs, what causes them, and the practical steps homeowners and contractors can take to prevent or fix them. By proactively addressing these concerns, you can extend the life of your roof and avoid unnecessary repair costs.
Oil Canning: Appearance vs. Performance
Oil canning is a visual waviness or distortion seen in the flat areas of metal roof panels. While it doesn’t usually affect the structural integrity of the roof, it can diminish its appearance, especially under certain lighting conditions.
Causes of Oil Canning
- Improper installation
- Over-tightened fasteners
- Thermal expansion with insufficient spacing
- Poor substrate alignment
Solutions
To reduce the risk of oil canning, choose panels with a ribbed or striated profile, which helps conceal slight imperfections. Proper clip spacing, underlayment installation, and panel handling during transport and installation also play a major role in minimizing this issue.
Leaks and Water Intrusion
Leaks are often considered rare in metal roofing systems, but when they do occur, they are typically due to issues at penetrations, seams, or flashings.
Common Leak Points
- Roof transitions and skylights
- Chimneys or vent pipes
- Improperly installed fasteners
- Damaged sealants or flashing
Prevention and Repair
Regular inspections, particularly after storms or freeze-thaw cycles, can help identify areas where sealant is deteriorating or fasteners have loosened. If your roof has standing seam panels, ensuring that seams are mechanically seamed or properly locked can prevent future leaks.
Corrosion and Rust
Metal roofs are often coated or painted to resist rust, but corrosion can still occur—especially in coastal or industrial areas where salt or chemicals are in the air.
Causes of Corrosion
- Damaged protective coatings
- Improper mixing of different metals (galvanic corrosion)
- Water pooling near fasteners
How to Prevent It
Use products with protective finishes, such as Galvalume or Kynar 500. Avoid dissimilar metal contact (like copper with aluminum) and keep gutters and roof areas clean to prevent water accumulation. When working with a contractor, request that only compatible accessories and fasteners be used throughout the installation.
Fastener Issues: Loosening, Backing Out, and Leaks
Fasteners secure metal panels to the substrate, but over time they can become problematic—especially if improperly installed.
Problems to Watch For
- Loose or missing fasteners
- Overtightened screws that damage the panel or gasket
- Fasteners that back out due to thermal expansion
Solutions
Use high-quality fasteners with neoprene washers and conduct regular tightening inspections, particularly in regions like Dayton, OH, where temperature swings can accelerate wear. Switching to hidden fastener systems or standing seam panels can also reduce long-term issues.
Thermal Movement and Expansion Noise
Metal expands and contracts with temperature changes. If the roofing system doesn’t allow for this movement, it can cause stress on panels, clips, and fasteners—and even generate popping or creaking noises.
Best Practices
Install floating clip systems that permit controlled movement without stressing the panels. Panel layout and clip placement should always be engineered to suit your climate zone and building dimensions.
Scratches and Surface Damage
Metal panels are vulnerable to scratching during manufacturing, transport, or installation. If not addressed, these scratches can expose the metal to moisture and result in rust.
How to Minimize Damage
Always inspect panels prior to installation and avoid dragging tools or materials across them. Touch-up paint approved by the panel manufacturer should be used immediately if scratches occur.
Ice Dams and Snow Buildup
Though metal roofs are better at shedding snow than shingles, poorly designed installations can still lead to ice dams or snow buildup at eaves and valleys.
Recommendations
Install snow guards and heated cables where needed. Proper attic insulation and ventilation are also crucial to minimize freeze/thaw cycles that lead to ice dams.
Choosing the Right Contractor Matters
Many metal roofing problems stem from poor installation rather than material failure. That’s why working with an experienced contractor who understands the full roofing system is essential. One such company is Metal Roofing Dayton, serving clients across the region with dependable installations and maintenance.
Metal Roofing Dayton adheres to strict installation practices and partners with trusted suppliers to deliver long-term results. Their trained crews know how to prevent the most common roofing issues by focusing on precision, system compatibility, and ongoing support.
Manufacturer Certifications and Trusted Brands
When addressing metal roofing concerns, material quality matters as much as installation expertise. That’s why Metal Roofing Dayton works with industry-leading brands and holds certifications like the CertainTeed Shingle Master Certification. This ensures access to premium materials and installation methods that meet or exceed manufacturer guidelines.
Final Thoughts: Preventing Issues Before They Begin
Most metal roof problems are avoidable when the right components, techniques, and preventive measures are in place. If you’re considering a new roof or managing an existing one, schedule regular inspections and consult with certified professionals to ensure your system remains in peak condition.
By understanding the potential challenges and knowing how to address them, homeowners can enjoy the full advantages of metal roofing: long lifespan, energy efficiency, and enduring curb appeal.
Read also our blog: Top Suppliers of Metal Roof Clips: How to Choose the Right Partner