Commercial Roof Coatings for Metal Sheeted Roofs

​​Metal‑sheeted roofs are a trusted choice across commercial and industrial buildings thanks to their durability and long service life. However, constant exposure to the elements inevitably leads to issues such as corrosion, cut‑edge deterioration, UV degradation, and water ingress. Modern roof‑coating systems provide a highly effective way to restore and protect these roofs—without the cost, disruption, or waste associated with full roof replacement.

Leading manufacturers such as HD Sharmans, Giromax, Liquasil, and Rooflock have developed advanced coating technologies engineered specifically for metal‑sheeted roofing. These systems deliver long‑term performance, exceptional weather resistance, and manufacturer‑backed guarantees that give building owners complete confidence in the longevity of their roof.

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Why Metal Roofs Need Specialist Coatings

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Over time, metal roofs face a range of challenges caused by weather exposure and natural thermal movement, including:

• Cut‑edge corrosion on sheet laps and edges

• Rusting and surface deterioration

• Failing fixings, gaskets, and seals

• UV breakdown of existing coatings

• Leaks and water ingress

A professional coating system addresses these issues directly, restoring the roof’s integrity and preventing further deterioration.

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Industry‑Leading Coating Systems

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HD Sharmans – Delcote® & Seamsil®

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HD Sharmans are renowned for their specialist metal‑roof refurbishment systems:

• Seamsil® for targeted cut‑edge corrosion treatment

• Delcote® for full roof encapsulation

• UV‑stable, flexible coatings designed for long‑term performance

• Proven adhesion to metal substrates

• Long manufacturer‑backed guarantees

These systems are engineered to halt corrosion and provide a seamless, weather‑resistant finish.

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Giromax – Roofcoat & Edgecoat

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Giromax products are widely trusted across the UK for their reliability and ease of application:

• Giromax Roofcoat for full metal‑roof refurbishment

• Giromax Edgecoat for cut‑edge corrosion repair

• Moisture‑tolerant formulations ideal for UK weather

• High elasticity to accommodate thermal movement

• Extended warranties for long‑term protection

Giromax coatings restore failing metal roofs with minimal disruption to building operations.

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Liquasil – Metalseal, Cut‑Edge Repair & Asbestoseal

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Liquasil has become a major force in the commercial roofing sector, offering technically advanced silicone‑based systems:

• Liquasil Metalseal for full metal‑roof refurbishment

• Liquasil Cut‑Edge Repair System for corrosion control

• Asbestoseal for asbestos‑cement roofs

• Exceptional flexibility and UV stability

• Environmentally conscious formulations

• Comprehensive manufacturer warranties

Liquasil systems bond strongly to metal substrates, delivering a robust, seamless, and highly weather‑resistant finish.

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Rooflock – Rooflock Twelve & Rooflock EdgeProtect

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Rooflock is known for its high‑performance, polyurethane‑based roofing systems designed for durability and long‑term waterproofing:

• Rooflock Twelve – a fully reinforced liquid‑applied membrane offering exceptional elasticity and crack‑bridging capability

• Rooflock EdgeProtect – a specialist system for treating cut‑edge corrosion

• Cold‑applied, solvent‑free formulations for safer installation

• High tensile strength and long‑term UV resistance

• Manufacturer‑approved warranties

Rooflock systems are engineered for demanding commercial environments, providing a tough, seamless, and long‑lasting protective finish.

Benefits of Professional Roof‑Coating Systems

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✔ Cost‑Effective Alternative to Replacement

Coatings eliminate the need for expensive strip‑and‑replace works, reducing labour, waste, and disruption.

✔ Long‑Term Protection

High‑performance coatings create a durable, waterproof barrier that protects against corrosion, leaks, and UV damage.

✔ Improved Energy Efficiency

Reflective coating options help regulate internal temperatures and may reduce energy costs.

✔ Minimal Disruption

Coating systems are applied while the building remains operational, avoiding downtime.

✔ Enhanced Appearance

A fresh, uniform finish improves the building’s visual appeal and can be colour‑matched to existing branding.

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Our Process

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1. Comprehensive Roof Survey
   We assess the condition of the metal sheets, fixings, laps, and existing coatings.

2. Cleaning & Preparation
   Surfaces are cleaned and prepared to ensure maximum adhesion and long‑term performance.

3. Cut‑Edge Corrosion Treatment
   Specialist systems from Sharmans, Giromax, Liquasil, or Rooflock are applied to stabilise and seal vulnerable areas.

4. Full Roof Coating Application
   A high‑performance coating system is applied to encapsulate the roof and deliver long‑lasting protection.

5. Final Inspection & Warranty
   Once complete, the system is inspected and backed by a manufacturer‑approved guarantee.

A Smarter, Longer‑Lasting Solution for Metal Roofs

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Whether your roof is showing early signs of corrosion or requires a full refurbishment, advanced coating systems from HD Sharmans, Giromax, Liquasil, and Rooflock offer a proven, cost‑effective, and long‑lasting solution. They restore performance, extend lifespan, and deliver exceptional value—without the disruption of a full roof replacement.

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