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Why hot dip galvanizing is the best protection for trailers

When it comes to protecting metal structures such as trailers, paint has been a popular choice of coating. However, hot dip galvanizing offers numerous benefits, making it the preferred protection method over painting. We explore the benefits of hot dip galvanizing and why it’s the best protection method for trailers.

Hot dip galvanizing steel

Galvanizing provides superior corrosion resistance

One of the primary benefits of hot dip galvanizing is its unmatched corrosion resistance. The process involves immersing a metal structure, such as a trailer, into a bath of molten zinc. Zinc is highly resistant to corrosion and forms a sacrificial layer, meaning it corrodes before the underlying steel. In contrast, paint does not provide sacrificial protection, meaning that the steel beneath is vulnerable to corrosion once the paint is damaged.

Trailers must be robust to endure long journeys and harsh weather conditions, making corrosion resistance especially important. The superior corrosion resistance of galvanizing ensures customers have peace of mind when taking their trailers out on the road. You save money on repairs and spend less time on maintenance. You will also benefit from fewer warranty claims from customers with damaged trailers.

Galvanized trailers are stronger

Hot dip galvanizing creates a metallurgically bonded coating that is seamless, strong, and abrasion-resistant. This durability ensures that the trailer remains protected from damage caused by rough handling, heavy loads, and constant movement. This saves both time and money on maintenance, and the trailers are more reliable for transporting heavier items.

Galvanizing is better for the environment

In today’s world, environmental considerations are more important than ever. Customers are voting with their wallets and choosing companies that align with their views.

Hot dip galvanizing is an environmentally friendly process that aligns with sustainable practices and fits into a circular economy. The zinc used in the galvanizing process is natural and abundant, and the process doesn’t use any more zinc than is needed. Zinc is also 100% recyclable, making it a sustainable and eco-friendly choice for trailer protection.

By choosing an environmentally friendly coating method, you stand out from your competitors, ultimately increasing revenue and customer retention. You also reduce your overall carbon footprint associated with trailer production and disposal, as trailers will be used for longer.

A trailer chassis being hot dip galvanized

Galvanizing removes human error

The hot dip galvanizing process requires submersion into a zinc bath, allowing the zinc to flow freely over all areas of the metal. This provides complete coverage and uniform protection to the entire surfaces, internal and external, of the trailer, including the corners, edges, and hard-to-reach areas.

In contrast, paint requires the user to coat the metal themselves. This leaves room for human error, as you cannot guarantee that all areas will be sufficiently coated. This leaves your trailer unprotected and vulnerable to corrosion.

Galvanizing provides instant results

Hot dip galvanizing does not require any drying time, unlike paint. This means trailers can be put into use immediately following coating. This provides customers with a faster turnaround time and reduces the downtime of their trailers.

What if I want a coloured finish?

A key reason why people choose paint for their trailers is because of the aesthetic appeal. Hot dip galvanizing by itself leaves a shiny silver finish, which may not be as appealing to some people. However, it’s possible to have a coloured finish without compromising on quality.

Powder coating is a type of finish that can be applied post-galvanizing, bringing the visual appeal of paint while retaining the strength of galvanizing. As the name suggests, this coating method uses powder instead of paint, bringing its own list of benefits. Powder coating is recommended for galvanized steel as it provides an even coating, lasts longer, and is quicker to apply than paint.


Compared to painted trailers, hot dip galvanized trailers offer superior protection against corrosion, are more durable and long-lasting, require minimal maintenance, and are environmentally friendly. Companies offering galvanized trailers can expect lower maintenance costs, faster turnaround times for customers, fewer warranty claims, and less downtime, increasing ROI and customer retention.

As part of the Joseph Ash Group, we offer both hot dip galvanizing and powder coating services for trailers. Find your nearest plant or contact us for more information.

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While hot dip galvanizing is a standard metal treatment method, spin galvanizing is essential for galvanizing small pieces. Read on to see what spin galvanizing is, how it works, and the benefits it offers.

Premier Galvanizing Spin Galvanizing

What is spin galvanizing?

Spin galvanizing is a process used to coat small metal parts with zinc. It is beneficial for covering small, complex parts that may be difficult to dip into a galvanizing bath. The process involves placing the pieces in a basket, which is then submerged in molten zinc, withdrawn, and spun at high speeds. Spin galvanizing increases the lifespan of steel by making it more robust, durable, and rust-resistant.

How does spin galvanizing work?

Spin galvanizing involves several steps. First, the parts that need treating are cleaned and prepared for galvanizing, which removes dirt, grease, or other contaminants by using a method such as shot blasting.

Next, the parts are dipped in a basket into molten zinc. The basket stops the pieces from being lost in the bath. Once a zinc/alloy layer forms, the basket is withdrawn and spun at high speeds. The spinning action distributes the zinc evenly over all parts and removes any excess, creating a uniform coating. The coated parts are removed from the basket and inspected to ensure the coating is even and defects-free.

Benefits of spin galvanizing

Spin galvanizing has numerous distinct benefits:

Protect small pieces: One of the main benefits of spin galvanizing is that small parts can be galvanized without being dipped directly into a bath. You gain the benefits of hot dip galvanizing without losing any pieces. This makes it an ideal solution for protecting fasteners, fixings, hinges, and chains.

Increased durability: Unlike surface-level coatings such as paint, the zinc layer used with galvanizing chemically bonds to the metal, making it stronger against corrosion. The zinc coating is also thicker than alternatives, further contributing to its durability. The increased durability enhances the metals lifespan, saving you time and money on repeated coatings.

Environmentally friendly: Galvanizing produces less waste than other methods, using only the amount of zinc needed. This makes it a circular economy environmentally friendly option.

Save money: You can expect to see a greater return on investment with spin galvanizing. Spin galvanizing makes the metal more durable, reducing the frequency of maintenance needed and reducing the associated labour costs such as transportation. It is also a fast process with a short turnaround time, so the parts are returned to you quicker.


Spin galvanizing is an optimal solution for safeguarding small metal parts, providing a combination of cost-effectiveness, efficiency, and environmental friendliness. This method improves adhesion and consistent coverage and minimises material wastage. Unlike alternative steel protection techniques, spin galvanizing stands out for its ability to deliver superior results. By choosing this method, you can effectively shield your small metal pieces.

At Premier Galvanizing, we offer spin galvanizing at our sister plant in Telford (part of the Joseph Ash Group). We can collect your small metal parts and return them to you with our BS EN ISO 9001:2015 quality finish. Contact us today to learn more about how we can help you protect your metal from rust and corrosion.

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There are many important reasons to consider hot dip galvanizing for protecting steel. The reasons range from longevity to cost-effectiveness, complete coverage to application speed. In this article, we explore each of these reasons and more.

hot dip galvanizing

Longevity and durability

Hot dip galvanizing provides exceptional longevity and durability, with the finish lasting anywhere from 34 to 170 years, depending on the environment. Not only does this create a maintenance-free surface, but it also reduces the carbon emissions associated with maintaining non-galvanized steel.

Cost-effectiveness

If you’re looking for a cost-effective way to protect steel, hot dip galvanizing is the answer, with lower costs than other coating applications. In fact, according to the Galvanizer’s Association, “Over a 25-year project life, the cost of a ‘cheaper’ paint system is almost 70% more than the cost of galvanizing. Likewise, the cost of a more ‘expensive’ paint system is almost double that of galvanizing.”

Painting steelwork can be highly labour-intensive, whereas the cost of the hot dip galvanizing process is relatively low. There is also very low waste in galvanizing compared to other methods.

Lowest lifetime cost

Hot dip galvanizing is the most versatile and economical way of protecting steel for long periods. In addition, when a fabrication has been hot dip galvanized, the low maintenance requirements are advantageous when steels are in remote or difficult-to-access areas.

Imagine a bridge made from non-galvanized steel. It would need maintenance every year to protect it from rust and corrosion. It would also need repainting at regular intervals. This requires paint, a workforce, transport for the workers and a means to protect the land or water below from paint contamination. It’s time-consuming and expensive. This maintenance is unnecessary if the same bridge is made from galvanized steel.

Complete coverage

In addition to its cost-effectiveness, hot dip galvanizing offers complete coverage for all steel parts, inside and out. When steel dips into a bath of molten zinc, the entire piece of metal, including hard-to-reach corners, narrow gaps, and hollow sections, is uniformly covered with a coating of equal thickness. This results in more reliable and long-lasting protection than other coatings, such as paint systems, which cannot achieve the same uniformity.

Coating toughness

Hot dip galvanizing also enhances the toughness of steel, with the zinc coating metallurgically bonding to the metal, and becoming part of the structure. This is especially important for steel used in transportation and construction that is often stored, moved, handled, and susceptible to damage. Hot dip galvanized steel is far less likely to be affected by potential damage.

Speed of application

The hot dip galvanizing process is rapid. The protective coating is applied in just a few hours. And this includes prepping the steel for the galvanizing process.

Faster construction

Hot dip galvanizing also helps to keep construction projects on track. Once the steel is galvanized, it can be erected on-site immediately. There’s no need to wait days for the coat to dry.

Ease of inspection

When checking the quality of galvanized steel, the inspection process is straightforward. The zinc layer’s thickness is measured using an electronic probe to ensure it complies with BS EN ISO 1461 – the British Standard for hot dip galvanized coatings.

Environmentally friendly

Finally, hot dip galvanizing is an environmentally friendly process. Once a galvanized structure reaches the end of its life, it can be melted and repurposed without losing quality. The zinc coating can also be reused and recycled, minimising waste, and reducing the environmental impact of the process.

In addition, the galvanizing process itself is environmentally friendly. At Premier Galvanizing, our plants are self-contained; steel goes in at one end, and the final product comes out at the other. As a result, we can control emission levels and repurpose excess waste products.

Given all these benefits, it’s easy to see why hot dip galvanizing is the smart choice for protecting steel.

Contact Premier Galvanizing today to protect your steel.

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