Is powder coating suitable for marine environments?

Powder coating provides good corrosion resistance for many marine applications, particularly for components that aren't permanently submerged. For parts with heavy saltwater exposure, we can recommend the most appropriate coating process — including zinc arc wire spray for maximum corrosion protection.

What is zinc arc wire spray and when do I need it for marine use?

Zinc arc wire spray applies a pure zinc coating to steel surfaces, providing galvanic protection similar to hot-dip galvanising. It's ideal for marine components that face heavy corrosion exposure — boat trailer frames, structural steelwork near the waterline, and hardware that has regular saltwater contact.

Can you coat aluminium boat parts?

Yes, aluminium is well-suited to powder coating and is commonly used in marine hardware. We apply appropriate pretreatment to ensure adhesion and provide a corrosion-resistant, good-looking finish for aluminium fittings, cleats, frames, and other boat components.

How do I protect my boat trailer from corrosion?

Boat trailers are regularly submerged in salt and freshwater, making them one of the most corrosion-prone items we coat. A quality powder coat on the frame and components provides a strong barrier. For steel trailers, zinc arc wire spray before powder coating gives maximum protection. Talk to us about the best approach for your trailer.

Marine coating services at Coating Lab Auckland

Marine & Boat Coating Services Auckland

Corrosion-resistant coatings built for the marine environment — from boat fittings and hardware to trailers and structural steelwork.

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Coating Solutions for the Marine Environment

Auckland is a city built around the water. Whether you're running a trailer boat on the Hauraki Gulf, maintaining a commercial vessel, or keeping a yacht in top condition, corrosion is your constant enemy. Salt air, UV exposure, and repeated immersion in salt water eat through standard coatings quickly.

At Coating Lab, we offer multiple coating processes suited to different marine applications — from powder coating for above-waterline fittings and hardware, to zinc arc wire spray for heavy-duty corrosion protection on steel components.

What We Coat for the Marine Industry

Boat fittings and hardware — cleats, brackets, hinges, rail systems, and deck hardware
Aluminium boat components — frames, hatches, tank covers, and trim pieces
Boat trailer frames and components — chassis rails, winch stands, rollers, and light brackets
Anchor systems and chain guides — components exposed to constant saltwater contact
Engine components — brackets and housings (not permanently submerged parts)
Marine stainless and mild steel parts — structural brackets and mounting hardware
Jetski and PWC parts — frames, brackets, and accessories

Boat Fittings & Hardware

Many boat fittings and hardware components — particularly those made from aluminium or mild steel — benefit significantly from powder coating. A quality powder coat provides a sealed, corrosion-resistant barrier that keeps salt and moisture away from bare metal, extending the life of fittings dramatically.

Learn more about our marine and boat fitting powder coating service →

Boat Trailers

Boat trailers are among the most corrosion-prone items on the road — they're regularly dunked in salt and freshwater, exposed to road salt, and left sitting in the elements between launches. A thorough powder coat on the trailer frame and components is one of the best investments a boat owner can make.

For steel trailers with significant corrosion exposure, we may recommend zinc arc wire spray as a base coat before powder coating, for maximum protection.

Learn more about trailer powder coating →

Zinc Arc Wire Spray for Marine Corrosion

For steel components that face heavy marine corrosion — submerged or near-waterline steelwork, trailer chassis, structural supports — zinc arc wire spray provides galvanic protection that powder coating alone cannot offer.

Zinc arc wire spray works by applying a thermally sprayed pure zinc coating directly to the steel surface. The zinc sacrificially protects the steel even if the coating is damaged, providing genuine long-term corrosion protection for demanding marine applications.

Learn more about our zinc arc wire spray service →

Frequently Asked Questions

Powder coating provides excellent corrosion resistance for marine applications that aren't permanently submerged. It's well-suited for boat fittings, hardware, trailer components, and aluminium parts. For heavier corrosion exposure, we can advise on combining powder coating with zinc arc wire spray for maximum protection.

Zinc arc wire spray applies a pure zinc coating to steel, providing galvanic corrosion protection similar to hot-dip galvanising. It's ideal for marine components facing heavy corrosion — boat trailer frames, structural steelwork, and hardware with regular saltwater contact. When the zinc coat is damaged, it still sacrificially protects the steel underneath.

Yes, aluminium is an excellent candidate for powder coating and is widely used in marine hardware. We use appropriate pretreatment processes to ensure adhesion on aluminium, delivering a corrosion-resistant, professional finish for fittings, frames, cleats, and other components.

Boat trailers are regularly submerged in salt and fresh water, making them highly susceptible to corrosion. A quality powder coat provides a strong barrier and is a significant improvement over factory paint. For steel trailers, we often recommend zinc arc wire spray as a base before powder coating for maximum, long-term protection.