In the area of industrial coatings, Hot Zinc Spray (HZS) has emerged as a formidable contender, especially for its efficacy in combating corrosion. This advanced technique, utilising the principles of thermal spraying, has gained traction for its robustness, versatility, and long-term cost-effectiveness. Central to the conversation around quality HZS applications is Metallisation Limited, a leader in providing state-of-the-art thermal spray solutions. This article aims to unravel the intricacies of Hot Zinc Spray, its application process, its benefits over other methods, and how companies like Metallisation Limited are paving the way for innovation in this field.

Understanding Hot Zinc Spray

What is Hot Zinc Spray?

Hot Zinc Spray, often abbreviated as HZS, is a thermal spraying process that involves the application of zinc to a substrate to provide corrosion protection. The method involves melting zinc wire or powder and then spraying it onto a prepared surface using a spray gun. This creates a robust coating that safeguards against environmental factors causing rust and degradation.

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The Process of Hot Zinc Spray

Surface Preparation

The key to a successful HZS application lies in surface preparation. The surface is typically cleaned and roughened, often through abrasive blasting, to ensure proper adhesion of the zinc coating.


During application, zinc is fed into a spray gun where it is melted (either electrically or by combustion) and then atomised. Compressed air is used to spray this molten zinc onto the substrate, creating a uniform layer.

Bonding and Protection

The zinc particles bond to the surface, forming a protective layer. This layer acts as a sacrificial anode, meaning it corrodes in place of the underlying metal, thereby greatly extending the life of the substrate.

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Comparing Hot Zinc Spray to Other Corrosion Protection Methods

Environmental Impact

Compared to other methods, HZS is environmentally friendly. It does not involve solvents or produce hazardous waste, making it a safer choice for both the environment and workers.

Durability and Longevity

HZS coatings are known for their remarkable durability and longevity. They are resistant to chipping and abrasion and can withstand harsh environmental conditions, making them ideal for industrial applications.


While the initial cost may be higher compared to other methods, the long-term benefits of HZS in terms of reduced maintenance and longer lifespan make it a cost-effective solution.

Metallisation Limited: Leading the Way in Thermal Spray Solutions

Metallisation Limited stands at the forefront of thermal spray technology, offering innovative and reliable solutions for HZS applications.

Range of Solutions

Metallisation Limited provides a diverse range of equipment and materials for various HZS applications, catering to different industrial needs. Their commitment to quality and innovation makes them a preferred choice for businesses seeking effective corrosion protection.

Emphasis on Quality and Innovation

Metallisation Limited’s equipment is designed with precision and durability in mind, ensuring that each application of HZS is consistent and of high quality. Their continuous innovation in thermal spray technology reflects their commitment to advancing the industry.

NSP Coatings: Excellence in Hot Zinc Spray with Metallisation Limited

NSP Coatings, leveraging the advanced solutions provided by Metallisation Limited, excels in delivering top-tier Hot Zinc Spray services.

Expertise and Quality

With a focus on delivering superior corrosion protection, NSP Coatings employs the latest techniques and equipment from Metallisation Limited. Their skilled team ensures that each project is executed with the highest standards of quality and precision.

Tailored Solutions

Understanding the diverse needs of their clients, NSP Coatings offers customised HZS solutions. They work closely with clients to ensure that the protective coating meets the specific requirements of each project.

Get In Touch

For those in need of reliable and effective corrosion protection, NSP Coatings provides free quotes. Partnering with Metallisation Limited, they guarantee a coating solution that is both durable and cost-effective.

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