ISPM-15 Wood Packing Marks: Six Questions Before Crating

The Pallet Is a Regulated Article

Importers plan around the goods. The treatment that decides whether a container is released sits in the packaging underneath them, and in most destination regimes that packaging is a regulated object in its own right: solid wood packing material — pallets, crates, boxes, barrels, spools, dunnage boards — has to carry a mark proving it was processed against heat, chemical fumigation or dielectric treatment before it left the country of origin.

The specification behind the mark is ISPM 15, published by the secretariat of the International Plant Protection Convention. It is not a guideline and it is not voluntary in the markets that adopted it. Six questions cover almost every dispute I have seen in this category, and none of them take a week to ask.

Question One: Is This Wood Even in Scope?

Two broad families sit outside the requirement, and both are over-claimed in both directions.

• Thin material. Solid wood no thicker than 6 millimetres is exempt. Anything below that threshold does not need a mark, however raw it is.
• Fully processed board. Plywood, oriented strand board, fibreboard and particleboard are manufactured under conditions that already defeat the pests the measure exists to stop, so panels and the crates built only from them are out of scope.

The trap is the hybrid. A crate with plywood walls and solid timber battens along the base is a mixed unit, and mixed units are treated as solid wood: the whole piece needs treatment and the whole piece needs the mark. That single rule is where most of the avoidable cost in this category is created, because a supplier will quote “plywood crate” while standing on a softwood skid.

Question Two: Which Treatment Does the Mark Claim?

Three are published in the specification, and the differences are physical, not administrative.

Ask which code is on your unit rather than which service your supplier booked. The code is what the inspector reads.

Question Three: Does the Mark Contain Exactly Four Things?

The mark is a fixed composition: the IPPC symbol, the ISO 3166-1 two-letter country code of the treating country, the number the national plant protection organisation assigned to that treatment provider, and the abbreviation of the treatment used. The specification is explicit that nothing else may be added to it, and that the mark is legible and permanent by design — stencil, not sticker.

Three failure shapes recur. An extra code printed beside the mark, often a factory’s own quality stamp, technically breaks the rules. A mark on a panel crate that was never treated, copied from an old export. And a mark that is burned so shallow it cannot be read at the inspection bay.

One modern relief is worth knowing: the framework has moved toward paperless operation, so a treatment registry or electronic record can support the mark, and acceptance of that varies by destination. The mark is still what travels.

Question Four: Has It Been Debarked for Europe?

The European Union imports the international standard with a national addition. Under the plant health regulation (EU) 2016/2031 and its implementing act (EU) 2019/2072, wood packaging carrying the ISPM 15 mark is admitted on the listed entry for treated material — and the underlying requirement it builds on includes bark removal. Debarking is not cosmetic in that framework; it is part of the condition, and bark is where quota-dwelling organisms survive a treatment that killed everything in the lamina.

Consequence for a shipper: a crate can be honestly heat-treated, correctly marked, and still be refused into an EU member state because a strip of bark was left on the corner post. Ask the treatment provider whether debarking was part of the job, and put it in the order.

Question Five: What Does the Destination Count?

Adoption of the standard does not produce identical enforcement; each authority publishes its own scope list, and the United States is the clearest illustration. Animal and Plant Health Inspection Service guidance treats non-manufactured solid wood packing as regulated — pallets, crates, barrels, spools and dunnage on the list — while material classes such as plywood, oriented strand board, hardboard, laminated or structural panels, plus plastic, metal and foam packing, are treated as unregulated.

The asymmetry is the practical part: what is exempt on one side of the ocean can be a documented-treatment requirement on the other, and a shipper optimising for the cheapest box will find that the saving was a routing assumption. Ask the question per destination, not per shipment.

Question Six: What Happens When It Fails?

Non-compliant wood packing is not corrected on the spot. Consignments are held, the packing is re-treated or replaced at the port under supervision, or the load is refused entry and sent back. Which of those happens depends on the authority, the facility available, and whether the goods can survive the extra dwell.

The economics are lopsided. The preventive step costs a conversation with a treatment provider before the crate is built; the corrective step costs terminal storage, a re-handling charge from whoever owns the yard, and days taken from a delivery promise already sold downstream.

The Four Lines Worth Getting in Writing

1. Which elements of my packing are solid wood, which are panel, and which are mixed — by drawing, not by description.
2. Which treatment code will appear on the mark, which licensed provider applies it, and in which country that provider is registered.
3. Whether debarking is included for EU-bound units.
4. What the destination authority counts as regulated packing, and where that list is published.

On our side of the seam both routes are ours to run. Deliver goods already crated by your own factory and we work from that packing description and the destination list, telling you in writing which units need a marked treatment and which are exempt. Leave the packing to us and the same answer comes before the timber is bought, because crating and case building sit inside the service. Plywood bodies stay exempt by construction, and the moment a unit carries solid timber battens we specify treated stock and a licensed operator’s mark on the purchase order, so the paperwork matches the box. The treatment itself and the stamp stay with accredited facilities — that is not a gap in our scope, it is how the scheme is written — and naming them is part of our brief, not an afterthought.

Wood packing policy is one of the few areas where a five-minute question genuinely changes the outcome. Send the crate drawing and the destination; the four answers above are cheaper than any of the three failure modes.