Skip to content

5 Things to Look for When Identifying Cut Edge Corrosion & Why its Important to Hire a Professional

Cut edge corrosion is a silent threat that often goes unnoticed until significant damage is done. As building owners and property managers, it’s crucial to be proactive in identifying and addressing this issue before it leads to extensive structural damage. In this blog post, we will discuss five key indicators of cut edge corrosion and emphasize the importance of hiring a professional for inspection and repairs.

Peeling Paint and Coating Breakdown

One of the earliest signs of cut edge corrosion is the peeling of paint or breakdown of protective coatings along the edges of metal roofs or cladding. These areas are vulnerable to moisture penetration, leading to the initiation and progression of corrosion. Regular inspections should focus on identifying any visible deterioration of protective layers.

Rust Streaks and Discoloration

Rust streaks and discoloration along the edges of metal surfaces are clear indicators of ongoing corrosion. These visual cues should not be ignored, as they suggest that the protective layers have been compromised, allowing moisture to interact with the metal substrate. Early detection of these signs is crucial for preventing further damage.

Irregularities in Seam Joints

Pay close attention to seam joints, overlaps, and connections in metal cladding systems. Corrosion often starts at these vulnerable points where metal sheets are joined. Any irregularities, such as gaps or signs of separation, can be indicative of cut edge corrosion. Regular inspections should include a thorough examination of these critical areas.

Presence of Efflorescence

Efflorescence, the formation of white powdery deposits on metal surfaces, is a clear indication of water penetration and corrosion beneath the protective layers. When left unaddressed, efflorescence can accelerate the corrosion process and compromise the structural integrity of the metal. Identifying and addressing the source of water intrusion is crucial to preventing further damage.

Thinning or Perforation of Metal

In advanced stages of cut edge corrosion, the affected metal substrate may exhibit thinning or perforation. This is a serious concern as it can compromise the structural strength of the metal and pose a safety risk. Regular professional inspections can help identify these critical issues early on and prevent costly repairs or replacements.

Why Hire a Professional for Inspection and Repairs?

While property owners and managers can keep an eye out for visible signs of cut edge corrosion, a professional inspection is essential for several reasons:

Expertise and Experience

Professionals have the knowledge and experience to identify subtle signs of corrosion that may go unnoticed by an untrained eye. Their expertise allows for a comprehensive assessment of the extent of the damage and the best course of action for repairs.

Specialised Equipment

Professionals use specialized tools and equipment to conduct thorough inspections, such as moisture meters and thermal imaging cameras. These tools enable them to detect hidden corrosion and assess the overall condition of the metal substrate.

Preventive Measures

Professionals not only identify existing corrosion but also provide recommendations for preventive measures. This proactive approach can help property owners mitigate potential risks and extend the lifespan of the metal components.

Quality Repairs

If corrosion is identified, professionals are equipped to carry out high-quality repairs using industry-standard materials and techniques. This ensures the longevity of the repairs and minimizes the risk of recurrence.

Safety Compliance

Ensuring the safety and structural integrity of a building is paramount. Professionals follow safety guidelines and industry standards during inspections and repairs, minimizing risks associated with corrosion-related structural issues.


Cut edge corrosion is a pervasive issue that demands attention and proactive measures. By understanding the early signs and enlisting the services of a professional for regular inspections and repairs, property owners can safeguard their investments and maintain the structural integrity of their buildings. Don’t let cut edge corrosion go unnoticed—take the necessary steps to protect your property and ensure its longevity.