If you're specifying racking for an environment that's damp, cold or exposed to the elements, you've probably come across the term 'galvanised pallet racking'. It's one of the most common questions warehouse managers ask when standard powder-coated racking isn't holding up as well as they'd hoped.
In short, galvanised pallet racking is pallet racking that's been treated with a protective zinc coating to resist rust and corrosion. Galvanised racking looks and functions like standard racking, but it's built to survive conditions that would eventually eat through a painted finish.
What Does ‘Galvanised’ Mean?
Galvanising is the process of coating steel with a layer of zinc. The zinc acts as a barrier against moisture and oxygen, the two things that cause steel to rust and it also provides what's known as sacrificial protection. If the coating is ever scratched or damaged, the surrounding zinc corrodes first, protecting the exposed steel underneath rather than letting rust spread.
This makes galvanised steel significantly more durable than steel with a standard paint or powder coating finish, particularly in environments where moisture is a constant factor.
How Is Pallet Racking Galvanised?
There are two main methods used to galvanise pallet racking components:
Hot-dip galvanising involves fully submerging the steel frames and beams in a bath of molten zinc. This creates a thick, uniform coating that bonds to the steel and covers every surface, including welds and joints that are otherwise hard to protect. Hot-dip galvanising is the industry standard for racking that will be used outdoors or in genuinely harsh conditions.
Pre-galvanising (or sherardising) applies a thinner zinc coating to steel sheet before it's formed into racking components. It offers good corrosion resistance for indoor use but doesn't provide the same level of protection as hot-dip galvanising, particularly at cut edges or welds where the coating can be compromised.
For anything going outside or into a genuinely wet or corrosive environment, hot-dip galvanising is generally the safer specification.
Why Choose Galvanised Pallet Racking?
The main reason to choose galvanised racking over standard powder-coated racking comes down to the intended storage environment. A few common drivers:
- Corrosion resistance: Zinc coatings can last decades before they need attention, even in demanding conditions, compared to a painted finish that can start to chip and rust within a few years outdoors.
- Lower maintenance: Because the coating protects itself, there's no need for regular repainting or touch-ups to keep the racking structurally sound.
- Longer service life: Racking that resists corrosion keeps its load-bearing capacity for longer, which matters for anything storing heavy palletised goods.
- Better appearance over time: Galvanised racking doesn't develop the patchy, rusted look that painted racking can get once the coating starts to fail.
Where Is Galvanised Pallet Racking Used?
Galvanised racking tends to come up whenever a warehouse or yard has moisture, temperature swings or exposure to the elements as a factor. Typical applications include:
- Outdoor and semi-outdoor storage, such as builders' merchants yards storing timber, plasterboard or building materials under canopy roofing. Our racking for builders' merchants often specifies galvanised components for exactly this reason.
- Cold storage and chilled environments, where condensation forms as temperatures fluctuate between chambers and ambient air. Our pallet racking for cold storage frequently uses galvanised frames to handle this kind of moisture exposure.
- Washdown areas and food production facilities, where racking is regularly hosed down or exposed to cleaning chemicals.
- Coastal or high-humidity sites, where salt air accelerates corrosion on untreated or painted steel.
- Any application using mobile racking or very narrow aisle racking in a chilled or humid facility, where the added moving parts benefit from extra corrosion protection.
Galvanised vs Powder-Coated Pallet Racking
Powder coating is still the right choice for most standard indoor warehouses. It's cost-effective, comes in a wide range of colours for bay identification and load marking and performs well in dry, climate-controlled conditions.
Galvanised racking costs more upfront, but that's offset by a much longer service life and lower maintenance in the conditions it's designed for. The decision usually comes down to a straightforward question: is the racking going somewhere that regularly gets damp, cold or exposed to the outside air? If so, the extra spec is worth it. If the racking is staying in a dry, indoor distribution centre, standard powder-coated racking will do the job.
Is Galvanised Pallet Racking Right for Your Warehouse?
If you're planning a new installation or extending an existing system into a colder, wetter or more exposed part of your site, it's worth having the environment assessed before you order. Getting the specification right at the design stage avoids paying for protection you don't need, or worse, under-specifying racking that then corrodes faster than expected.
Regular pallet racking inspections are also worth factoring in wherever racking is exposed to moisture, since early signs of corrosion are far easier to catch during a scheduled check than after damage has already set in.
For a wider look at how to plan storage for your site, our warehouse storage solutions guide covers the key questions to work through before you specify any racking system.
Galvanised Racking FAQs
What Is Galvanised Pallet Racking?
Galvanised pallet racking is standard pallet racking that's been coated in zinc, either by hot-dip galvanising or pre-galvanising, to protect the steel from rust and corrosion. The zinc layer forms a barrier against moisture and oxygen and provides sacrificial protection, meaning it corrodes before the steel underneath does if the coating is damaged. It's specified instead of standard powder-coated racking wherever a warehouse, yard or storage area is exposed to damp, cold or fluctuating conditions, since a painted finish will degrade much faster in those environments.
What's The Difference Between Hot-Dip And Pre-Galvanised Racking?
Hot-dip galvanising submerges fully assembled or fabricated steel components in molten zinc, producing a thick coating that covers welds and joints as well as flat surfaces. Pre-galvanised steel is coated before it's cut and formed into racking parts, which leaves a thinner layer and can expose bare steel at cut edges and welds. Hot-dip galvanising offers stronger, longer-lasting protection and is the usual choice for racking that's going outdoors or into consistently damp conditions.
Do You Need Galvanised Racking for Outdoor Storage?
For racking that's permanently outdoors or under an open-sided canopy, galvanised racking is strongly recommended. Standard powder-coated racking will corrode much faster when it's exposed to rain, condensation and temperature changes, which shortens its usable life and can eventually affect load capacity. Builders' merchants yards, timber stores and outdoor materials handling areas are common examples where galvanised racking is the standard specification rather than the exception.
Is Galvanised Pallet Racking More Expensive Than Standard Racking?
Yes, galvanised racking typically costs more than powder-coated racking upfront, since hot-dip galvanising is a more involved process. However, it usually works out more cost-effective over the racking's lifetime in the right environment, because it needs far less maintenance and lasts significantly longer before replacement is needed. For indoor, climate-controlled warehouses, standard powder-coated racking remains the more economical option.
Can Galvanised Racking Be Used in Cold Storage?
Yes, galvanised racking is a common choice for cold storage and chilled distribution facilities. Moving between chambers at different temperatures causes condensation to form on racking surfaces and that repeated moisture exposure is exactly the kind of condition galvanising is designed to handle. It's one of the reasons galvanised frames and beams are frequently specified for chilled and frozen storage installations rather than standard finishes.
Talk to Us About Your Racking Needs
Every site is different and the right coating depends on your specific conditions, from temperature and humidity through to how the racking will be used day to day. If you're not sure whether galvanised or powder-coated racking is the better fit for your warehouse or yard, get in touch with our team.
We'll talk through your environment, your storage requirements and your budget and help you specify a system that's built to last.