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Cut‑edge corrosion is one of the most common issues affecting metal‑sheeted roofs on commercial and industrial buildings. Over time, the factory‑applied coating on metal sheets begins to peel back at the edges due to weathering, UV exposure, and natural thermal movement. Once the bare steel is exposed, corrosion begins—leading to rust, leaks, and progressive deterioration.

Professional cut‑edge corrosion treatment is essential to stop this process, restore the roof’s integrity, and prevent the need for costly sheet replacement. Using high‑performance, specialist systems designed specifically for metal roofing, we provide long‑lasting protection that extends the life of your roof and safeguards your building.

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What Is Cut‑Edge Corrosion?

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Cut‑edge corrosion typically develops in areas where the protective coating is most vulnerable, including:

• Sheet laps

• End laps

• Side laps

• Fixings and fasteners

• Exposed edges where the original coating has failed

As the coating retracts, moisture penetrates the exposed steel. This leads to rusting, staining, leaks, and in severe cases, structural weakening of the sheet. Without intervention, the corrosion spreads along the laps and across the sheet surface.

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Why Treat Cut‑Edge Corrosion?

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✔ Prevent Leaks and Water Ingress

Stopping corrosion at the edges prevents moisture from entering the building and damaging internal areas.

✔ Extend the Life of the Roof

A properly treated roof can gain 10–20+ years of additional service life.

✔ Avoid Expensive Sheet Replacement

Treatment is significantly more cost‑effective than replacing entire roof sheets.

✔ Improve Appearance

A restored roof looks cleaner, more uniform, and more professional.

✔ Maintain Asset Value and Compliance

Well‑maintained roofs help protect building value and meet insurance or warranty requirements.

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How Professional Cut‑Edge Corrosion Systems Work

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Modern cut‑edge corrosion systems are engineered specifically for metal‑sheeted roofs and typically include:

Flexible, Weather‑Resistant Sealants

These stabilise the corroded edge and prevent further peeling of the original coating.

High‑Performance Protective Coatings

Applied over the treated area to create a seamless, waterproof barrier.

UV‑Stable Formulations

Designed to withstand long‑term exposure to sunlight without cracking or fading.

Elastic Membranes

Allow for natural thermal movement of the roof sheets without compromising the seal.

Long‑Term Guarantees

Many systems offer extended warranties when installed by approved contractors.

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Our Cut‑Edge Corrosion Treatment Process

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1. Detailed Roof Inspection
   We assess the extent of corrosion, coating failure, and any underlying issues.

2. Cleaning & Preparation
   All affected areas are cleaned, degreased, and prepared to ensure maximum adhesion.

3. Rust Removal & Stabilisation
   Corroded steel is treated and stabilised to prevent further deterioration.

4. Application of Specialist Cut‑Edge System
   A flexible, high‑performance system is applied to seal and protect the sheet edges, laps, and fixings.

5. Encapsulation 
   The treated areas are reinforced and encapsulated to create a durable, weather‑resistant finish.

6. Final Inspection & Warranty Registration
   Once complete, the system is inspected and backed by a long‑term guarantee.

 

Protect Your Roof Before the Damage Spreads

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Cut‑edge corrosion will not stop on its own—it only worsens with time. Early treatment is the most cost‑effective way to protect your building, extend the life of your roof, and avoid expensive repairs in the future.

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