Every shipment crossing an international border faces phytosanitary scrutiny. If your pallets don’t meet the standard, goods sit idle at the port — costing time, money, and credibility with your customer. At Ferrier Industrial, we field questions about heat treated pallets regularly, and we know the confusion around treatment marks, compliance stamps, and material choices can slow procurement decisions. This guide lays out what you actually need to know.

A heat treated pallet is a wooden pallet that has been kiln-dried or heated to a core temperature that eliminates insects, larvae, and pathogens embedded in the timber. The treatment satisfies ISPM 15 (International Standards for Phytosanitary Measures No. 15), the globally recognised framework that governs wood packaging materials used in international trade. Without that treatment and the corresponding compliance stamp, your shipment can be rejected, quarantined, or destroyed at the destination port.

Why Timber Treatment Matters for Export Packaging

Raw wood carries biological risk. Bark beetles, pine wilt nematodes, and fungal organisms travel inside untreated timber — and they’ve caused significant ecological damage when introduced to new environments through shipping. ISPM 15 exists specifically to prevent that.

For Australian and New Zealand exporters, this is not optional. Both countries enforce strict biosecurity protocols on incoming and outgoing wood packaging, and trading partners across Asia, the EU, and the Americas apply the same standard. Whether you’re shipping steel coils from Wollongong, agricultural product from Canterbury, or manufactured goods from Auckland, the pallet under your load needs to comply.

The treatment itself is straightforward. Timber is heated until its core reaches a minimum threshold temperature for a sustained period. Once treated, the pallet receives a branded mark — the ISPM 15 wheat sheaf stamp — identifying the treatment provider, country of origin, and method used (HT for heat treatment, or MB for methyl bromide, though MB use is declining globally due to environmental concerns).

It’s worth noting that not every pallet leaving a facility needs heat treatment. Domestic-only pallets, engineered wood products like LVL and plywood, and pallets made from processed timber composites are typically exempt because those manufacturing processes already neutralise biological organisms. We’ll come back to that distinction — it matters for cost and material selection.

Heat Treated Pallet Types and Material Options

Solid Timber Pallets With Heat Treatment

The most common format. Hardwood or softwood pallets are assembled, then batch-treated in a kiln. Hardwood species offer greater load-bearing capacity and resist impact damage better, but they’re heavier and can be more expensive depending on supply. Softwood pallets are lighter and easier to source in volume, though they wear faster under repeated use and heavy loads.

At Ferrier Industrial, we supply pallets in both solid timber and engineered wood formats. Our focus is matching pallet specification to the actual transport task — considering load weight, stacking requirements, handling method (forklift, pallet jack, or crane), and whether the pallet is single-use export or part of a returnable loop.

Engineered Wood Alternatives

LVL (laminated veneer lumber) and plywood pallets don’t require heat treatment under ISPM 15 because the manufacturing process — high-temperature pressing with adhesive — already satisfies the phytosanitary requirement. We’ve supplied LVL-based pallets and dunnage to steel and heavy industry clients for years, and the performance advantages go beyond compliance.

LVL is dimensionally stable, resists warping and splitting, and can be specified to precise thicknesses. For operations where pallet consistency matters — automated handling lines, racking systems, container loading — that predictability is valuable. Our BWR (boiling-water-resistant) grade LVL withstands moisture exposure without delaminating, which suits outdoor storage yards and maritime container environments.

• Solid hardwood pallets offer high impact resistance and suit heavy, concentrated loads such as steel coils and machinery, though they require ISPM 15 heat treatment for export use
• Softwood pallets are lighter and cost-effective for single-use export shipments, but wear faster under repeated cycling and need careful inspection before reuse
• Engineered wood pallets (LVL, plywood) are exempt from heat treatment requirements, dimensionally consistent, and well-suited to automated handling and racking systems

Compliance Markings and What Evaluators Should Check

Reading the ISPM 15 Stamp on a Heat Treated Pallet

The compliance mark is your proof. It’s branded or stencilled onto at least two opposite sides of the pallet and includes the country code, producer number, and treatment code. For heat treatment, the code is “HT.” If you see “DB” alongside it, the timber has also been debarked — a secondary requirement under the standard.

Procurement teams evaluating pallet suppliers should confirm that the supplier holds current accreditation from the relevant national plant protection organisation. In Australia, that’s the Department of Agriculture, Fisheries and Forestry; in New Zealand, it’s the Ministry for Primary Industries. The accreditation allows the supplier to apply the ISPM 15 mark, and it’s audited periodically.

Don’t assume compliance based on a verbal assurance. We’ve seen shipments held at port because the stamp was missing, illegible, or applied to non-compliant timber. The mark needs to be clear, permanent, and correctly formatted.

Common Compliance Pitfalls

Repaired pallets can lose their compliant status if replacement boards haven’t been individually treated. Mixed pallets — where some boards are treated and others aren’t — don’t meet the standard. If you’re sourcing reconditioned or second-hand pallets for export, verify that every component carries valid treatment.

Moisture content is another consideration. Heat treatment reduces moisture, but pallets stored outdoors or in humid environments can reabsorb water. High moisture content promotes mould growth on the pallet surface, which — while not necessarily a phytosanitary failure — can trigger additional inspection at the receiving port and delay clearance.

Specifying Pallets for Heavy Industry and Intermodal Use

For operations moving steel, minerals, or heavy manufactured goods, the pallet is part of a broader load-restraint system. It needs to work with the dunnage, the strapping or banding, the container liner (if used), and the restraint hardware holding the load in place during transit.

We see this overlap constantly at Ferrier Industrial. A pallet that’s technically compliant but undersized for the load, or one that deflects under forklift tines because the bearer spacing is wrong, creates downstream problems — damaged product, failed audits, unsafe handling. Pallet specification should always account for the full transport chain.

In container loading, pallet height affects stacking clearance. Bearer width affects forklift compatibility. Deck board gaps affect load stability for smaller items. Top-deck thickness affects nail-holding capacity for cleating and blocking. These are practical engineering decisions, not afterthoughts.

For coil and sheet-steel transport, we often combine pallets with our LVL high-friction dunnage — rubber-lined timber beams that prevent lateral movement without additional lashing. The dunnage sits on or between pallets and grips the load through friction rather than mechanical fastening. That approach reduces load preparation time and improves safety for warehouse crews.

Lifecycle Considerations for Treated Pallets

Reuse, Repair, and End-of-Life Pathways

Single-use export pallets are straightforward — they travel one way and are typically disposed of or recycled at the destination. But many operations want a more sustainable approach, and that means thinking about pallet lifecycle from the outset.

Reusable pallets need to be built for it. Heavier gauge bearers, denser deck boards, and reinforced corner connections all extend service life. Heat treatment doesn’t degrade with reuse, so a properly treated pallet remains compliant through multiple cycles — provided the timber and the stamp remain intact.

When pallets reach end of life, timber can be chipped for biomass energy, composted, or processed into particleboard. LVL and engineered wood follow similar pathways. At Ferrier Industrial, we work with a composite-wood production line that recycles timber waste into reusable beams, closing the loop on material that would otherwise go to landfill.

Timber pallets with valid heat treatment retain their ISPM 15 compliance across multiple use cycles as long as the wood and stamp are undamaged. Pallet repair should always use individually treated replacement boards — untreated boards invalidate the entire unit’s compliance status. LVL and engineered wood pallets carry inherent phytosanitary compliance, dimensional consistency, and straightforward recycling through chipping or energy recovery. Moisture management during storage also extends pallet life and reduces the risk of mould-related inspection delays at port. Ultimately, selecting the right pallet material at the outset — solid timber, LVL, or composite — affects total cost-in-use, not just purchase price.

Key Benefits of Choosing the Right Pallet Specification

Making informed pallet decisions affects more than just freight compliance. The right specification touches cost, safety, sustainability, and supply continuity.

• Confirmed ISPM 15 compliance avoids costly shipment holds, quarantine fees, and reputational risk with trading partners
• Proper load-bearing specification reduces product damage, pallet failure during handling, and workplace injury from collapsing stacks
• Engineered wood options like LVL remove the need for post-assembly heat treatment while delivering consistent dimensions for automated systems
• Reusable pallet designs lower per-trip costs and reduce waste generation across the supply chain
• JIT and consignment stock arrangements with your pallet supplier smooth production scheduling and reduce on-site storage requirements

How We Approach Pallet Supply at Ferrier Industrial

We’ve supplied pallets and timber packaging to heavy industry, logistics, and postal operations across Australia and New Zealand for decades. Our approach starts with understanding what the pallet actually needs to do — not just its dimensions, but its role in the full transport and handling chain.

When a client comes to us with a heat treated pallet requirement, we begin with a site review. We look at load weights, handling equipment, storage conditions, stacking configurations, container or vehicle interfaces, and any specific customer or regulatory standards that apply. From there, our team designs or specifies the pallet — whether that’s a standard format from our range or a custom build with specific bearer spacing, deck board configuration, or material grade.

We prototype and pilot where the application is new or the stakes are high. For ongoing supply, we offer JIT delivery and consignment stock arrangements that keep pallets available without tying up warehouse space. Spares, replacement components, and ongoing QA are part of the service — not afterthoughts.

Our Auckland and NSW facilities coordinate supply across both countries, and our manufacturing relationships in several countries allow us to scale production when project volumes increase. We hold accreditation for ISPM 15 treatment and can supply pallets that are compliant, stamped, and ready for export.

Practical Steps for Pallet Procurement

If you’re reviewing pallet supply for an upcoming project or ongoing operation, here’s a sensible starting framework.

• Confirm whether your shipments require ISPM 15 compliance based on destination country regulations and the type of wood packaging being used
• Document load weights, dimensions, and stacking requirements so pallet specification matches actual operating conditions rather than generic assumptions
• Assess whether solid timber, LVL, or composite materials best suit your handling method, reuse expectations, and budget
• Verify your supplier’s treatment accreditation and request sample pallets with visible, correctly formatted compliance marks
• Discuss JIT delivery, consignment stocking, and spares availability to ensure pallet supply doesn’t become a bottleneck during peak periods
• Review end-of-life pathways — chipping, composting, or recycling — to align pallet procurement with your organisation’s sustainability commitments

Ready to Specify?

Getting your heat treated pallet specification right saves time at the border, protects your product in transit, and supports cleaner supply chain reporting. Whether you need a standard export pallet, an engineered LVL alternative, or a custom format designed around your specific load and handling requirements, we’re well placed to help.

At Ferrier Industrial, we’d welcome the chance to review your requirements, share drawings or samples, and put together a pilot plan that fits your timeline. Reach out to our team — we’re happy to start with a straightforward conversation about what you’re shipping, where it’s going, and what’s sitting underneath it.