Soudal Zinc Spray

Code Name Size Colour
175817 Soudal Zinc Spray Matt 400ml NA

Description:

Soudal Zinc Spray is a professional-grade protective coating designed to provide long-lasting, heavy-duty corrosion resistance. Formulated with 98% pure zinc, it offers a high-performance galvanising action that safeguards both untreated iron and steel, as well as previously zinc-coated surfaces. Whether you are repairing automotive bodywork or protecting structural metal frameworks, this spray creates a durable barrier that stands up to the harshest New Zealand environments.

This cold-galvanising spray is more than just a coating; it is a vital tool for industrial maintenance and fabrication. Its high zinc content ensures excellent electrical conductivity, making it suitable for spot welding and protecting weld seams. As a key part of our technical aerosols range, it provides a reliable, matte finish that resists mechanical stress and environmental erosion.

Why Choose Soudal Zinc Spray?

In coastal or high-moisture regions across NZ, untreated steel can begin to rust almost immediately. Soudal Zinc Spray provides a fast, economical way to “cold galvanise” metal on-site.

  • 98% Pure Zinc Content: The high concentration of zinc provides cathodic protection, meaning the zinc will sacrifice itself to protect the underlying steel from rust and oxidation.

  • Mechanical Durability: Unlike standard paints, this coating is engineered to resist mechanical shocks, rubbing, and erosion. It’s ideal for components that face physical wear or high-vibration environments.

  • Weld-Through Capability: Because it is a good electrical conductor, it is perfect for spot welding applications. You can protect the metal before assembly without compromising the quality of the weld.

  • Versatile Metal Protection: From gutter brackets and gate hinges to heavy industrial machinery and automotive repairs, it provides a consistent, professional-grade protective layer.

  • Economical Coverage: The high-yield aerosol design ensures you get maximum coverage from every can, making it a cost-effective solution for large-scale structural projects.

Features and Benefits:

  • Superior Corrosion Resistance: Safeguards iron and steel against the elements.

  • Fast-Drying Matte Finish: Provides a clean, professional look that can be left as a final coat or overpainted.

  • Spot Welding Compatible: Does not interfere with electrical conductivity during the welding process.

  • High Heat Resistance: Suitable for surfaces that may experience temperature fluctuations.

  • 360° Application: The valve allows for spraying at any angle, ensuring full coverage in tight corners and weld seams.

Ready to start your project? Use our Soudal Stockists page to find your nearest store and pick up the right tools today.

Technical Documents:

TDS
SDS

FAQs

What is the difference between Zinc Spray and standard silver paint?

Standard silver paint only provides a cosmetic barrier. Soudal Zinc Spray contains 98% pure zinc, which provides “sacrificial” or cathodic protection. This means even if the coating is scratched, the surrounding zinc will prevent rust from spreading to the exposed steel.

Can I paint over Soudal Zinc Spray?

Yes, once the Zinc Spray has fully cured, it can be overpainted with most standard industrial and automotive topcoats. This is a common practice in automotive repair to provide a rust-resistant base layer before applying a colour-matched finish.

How do I prepare the surface before spraying?

For maximum adhesion, the surface must be clean, dry, and free from grease or old rust. We recommend using Soudal Cleaner & Degreaser to remove any contaminants before application. If there is existing loose rust, it should be removed with a wire brush first.

Does it provide protection against saltwater?

Zinc Spray is highly effective at resisting corrosion caused by moisture and salt air, which is essential for New Zealand’s coastal conditions. While it provides excellent protection, for items submerged in saltwater, additional specialised marine coatings may be required.