Heat Treatment (ISPM-15)
Shipping internationally? ISPM-15 regulations require that all wood packaging materials be heat-treated to eliminate pests. We provide certified heat treatment with official HT stamps and documentation.
Request Heat Treatment
What is ISPM-15?
ISPM-15 (International Standards for Phytosanitary Measures No. 15) is a regulation developed by the International Plant Protection Convention (IPPC) that governs the treatment of wood packaging materials used in international trade.
The standard requires that wood packaging (pallets, crates, dunnage) be treated to a core temperature of 56 degrees Celsius (133 degrees Fahrenheit) for a minimum of 30 minutes. This process eliminates insects and pathogens that could be transported across borders and cause ecological damage.
Most countries enforce ISPM-15 strictly. Shipments arriving with non-compliant wood packaging may be refused entry, quarantined, treated at the destination port at the shipper's expense, or destroyed entirely. The financial and logistical consequences of non-compliance can be severe — delayed shipments, demurrage charges, and lost customers.
Our Process
Receive
Bring your pallets to our facility or schedule a pickup. We accept any wood packaging material — pallets, crates, dunnage, skids, and blocking.
Heat Treat
Pallets enter our industrial kiln and are heated to 56 degrees Celsius core temperature for 30+ minutes. Temperature probes verify compliance at the core of the thickest lumber piece.
Stamp
Each pallet receives the official ISPM-15 HT stamp with our IPPC registration number. The stamp is applied with permanent ink in a visible location per IPPC guidelines.
Document
We provide treatment certificates and documentation for your export paperwork, including batch numbers, treatment dates, temperatures, and duration records.
Key Specifications
Countries Requiring ISPM-15
As of 2024, over 180 countries enforce ISPM-15 regulations for wood packaging materials. Here are the major trading regions and their enforcement details.
European Union (All 27 Members)
Germany, France, Italy, Spain, Netherlands, Belgium, Poland, Sweden, Austria, and 18 more
Strictly enforced. Non-compliant shipments are quarantined or destroyed at shipper expense.
North America
Canada, Mexico, United States (for imports)
Canada and Mexico require ISPM-15 for all wood packaging. The US requires it for incoming shipments from most countries.
Asia-Pacific
China, Japan, South Korea, Australia, New Zealand, India, Indonesia, Thailand, Vietnam, Philippines
China and Australia are particularly strict. Australia may fumigate non-compliant shipments at port, adding major delays and costs.
South America
Brazil, Argentina, Chile, Colombia, Peru, Ecuador, Uruguay, Paraguay
Brazil enforces ISPM-15 rigorously with port inspections. Non-compliance can result in re-export of the entire container.
Middle East & Africa
UAE, Saudi Arabia, Israel, South Africa, Nigeria, Kenya, Egypt, Morocco
Enforcement varies but is increasing. The UAE and Saudi Arabia have adopted strict ISPM-15 inspection protocols.
United Kingdom & EFTA
United Kingdom, Norway, Switzerland, Iceland, Liechtenstein
Post-Brexit, the UK enforces ISPM-15 independently. Compliance is required for all wood packaging entering the UK.
Bottom line: If you are shipping wood packaging internationally to virtually any country, you need ISPM-15 compliance. When in doubt, treat it. The cost of treatment is a fraction of the cost of a rejected shipment.
Heat Treatment vs. Chemical Treatment
ISPM-15 originally allowed two treatment methods: heat treatment (HT) and methyl bromide fumigation (MB). Here is why heat treatment is now the industry standard — and the only method we use.
| Factor | Heat Treatment (HT) | Methyl Bromide (MB) |
|---|---|---|
| Acceptance | Accepted by all ISPM-15 countries | Banned or restricted in many countries |
| Environmental impact | No chemicals, zero emissions | Ozone-depleting substance (Montreal Protocol) |
| Worker safety | No chemical exposure risk | Toxic — requires specialized handling |
| EU compliance | Fully compliant | Banned in the EU since 2010 |
| Canada compliance | Fully compliant | Banned for pallet treatment |
| Australia compliance | Fully compliant | Being phased out — restricted use |
| Residue on pallets | None | Chemical residue may affect goods |
| Retreatment impact | Can be re-treated unlimited times | Repeated exposure degrades wood |
| Cost | Moderate — energy cost only | Higher — chemical + disposal costs |
We exclusively use heat treatment. It is universally accepted, environmentally responsible, and leaves no chemical residue on your pallets or products.
Common Mistakes to Avoid
We have seen businesses make these costly mistakes. Learn from their experience.
Using untreated pallets and hoping customs won't notice
Customs agents are trained to identify ISPM-15 stamps and increasingly use technology to verify compliance. Getting caught means your shipment is held at port while you scramble for a solution. Demurrage charges alone can exceed $500 per day per container.
Assuming all wood pallets are pre-treated
Most domestically purchased pallets are NOT heat-treated. Unless a pallet carries a visible ISPM-15 HT stamp from a certified facility, assume it is non-compliant. Buying 'new' pallets does not mean they are export-ready.
Repairing treated pallets with untreated lumber
If a heat-treated pallet is repaired using non-treated boards, the entire pallet becomes non-compliant and must be re-treated. Always use treated replacement lumber, or re-treat the pallet after repair. We handle this automatically for pallets in our repair program.
Ignoring dunnage and blocking requirements
ISPM-15 applies to ALL solid wood packaging, not just pallets. Dunnage (spacers, bracing), blocking, crating, and even wooden wedges must be treated and stamped. A compliant pallet with non-compliant dunnage will still get your shipment flagged.
Not keeping treatment records
Some countries require treatment certificates in addition to stamps on the wood. If you cannot produce documentation showing when and where pallets were treated, your shipment may be delayed while records are verified. Always keep treatment certificates with your export paperwork.
Waiting until the last minute
Heat treatment takes 24-48 hours. If you need treated pallets for a shipment leaving tomorrow, you are already too late. Plan ahead and maintain a stock of treated pallets, or use our recurring treatment service to always have compliant pallets on hand.
Documentation & Compliance
Proper documentation is as important as the treatment itself. Here is exactly what we provide and how to use it.
Treatment Certificate
Each batch of treated pallets receives a numbered treatment certificate that includes our IPPC facility registration number, the treatment date and time, the kiln temperature log, the core temperature achieved, the duration of treatment, and the number of pallets in the batch. This certificate is your proof of compliance.
ISPM-15 Stamp (HT Mark)
Every treated pallet is branded with the official IPPC mark. The mark includes the IPPC logo (wheat sheaf), our country code (US), our unique facility registration number, and the treatment code (HT for heat treatment). The stamp is applied in permanent ink on at least two sides of the pallet for visibility.
Kiln Temperature Logs
We maintain digital temperature logs for every treatment cycle, recorded from probes placed at the core of the thickest lumber in the load. These logs are available on request and serve as backup documentation if a treatment certificate is questioned by customs authorities.
Compliance Guidance
We advise our clients on destination-country requirements, proper handling of treated pallets post-treatment, documentation packaging for international shipments, and how to handle the customs clearance process. If your customs broker has questions, they can call us directly.
Re-treatment Requirements
Heat treatment does not expire in the traditional sense, but there are situations where re-treatment is required or recommended.
After Repair with Untreated Lumber
If any component of a treated pallet is replaced with untreated wood, the entire pallet must be re-treated. This is the most common reason for re-treatment. If you use our repair service, we can either use pre-treated replacement boards (no re-treatment needed) or re-treat the entire pallet after repair.
After Prolonged Outdoor Storage
While there is no official expiration date for ISPM-15 treatment, some importing countries may question pallets with heavily weathered or faded stamps. If pallets have been stored outdoors for extended periods and the HT stamp is no longer legible, re-treatment and re-stamping is recommended to avoid issues at customs.
When Shipping to High-Scrutiny Destinations
Countries like Australia, New Zealand, and China inspect wood packaging thoroughly. If your pallets have been in circulation for a long time or show signs of pest exposure, re-treatment before shipment to these destinations provides extra assurance and reduces the risk of inspection delays.
After Contamination or Pest Exposure
If treated pallets have been stored near an active pest infestation site or in conditions where they may have been re-infested, re-treatment is required. The original treatment does not provide ongoing protection — it eliminates pests at the time of treatment only.
Regulatory Changes
Some countries periodically update their ISPM-15 enforcement requirements. If a destination country increases its scrutiny level or adds new documentation requirements, we stay current and advise our clients when re-treatment or additional documentation is needed.
Frequently Asked Questions
How long does heat treatment take?
The treatment cycle itself takes approximately 6-12 hours depending on the wood thickness and moisture content, as the core must reach and maintain 56 degrees Celsius for 30 minutes. Including receiving, staging, treatment, cooling, stamping, and documentation, most orders are completed within 24-48 hours of drop-off or pickup.
Does heat treatment weaken the pallets?
No. Heat treatment at ISPM-15 temperatures (56 degrees Celsius) does not significantly affect the structural integrity of the wood. In fact, heat treatment can improve some properties by reducing moisture content, which makes the wood slightly harder and less prone to mold growth.
Can you heat-treat pallets that are already built, or only new ones?
We treat both new and used pallets. We also treat crates, dunnage, blocking, and other solid wood packaging materials. As long as the wood is clean and free from hazardous contamination, we can treat it. There is no requirement that wood be new or unused to receive ISPM-15 treatment.
What happens if my shipment arrives with non-compliant pallets?
Consequences vary by country but can include: the shipment being held at port (demurrage charges of $300-500+ per day per container), mandatory treatment or fumigation at the destination at your expense, quarantine of the shipment pending investigation, re-export of the container back to origin, or destruction of the wood packaging. In extreme cases, repeated violations can result in increased inspection rates for all future shipments from your company.
Do I need ISPM-15 treatment for shipments to Canada or Mexico?
Yes. Both Canada and Mexico require ISPM-15 compliant wood packaging for imported goods. This is especially important for Tucson-area businesses shipping across the Mexico border — Nogales customs enforces ISPM-15 requirements and non-compliant shipments will be stopped.
Can I maintain a standing inventory of heat-treated pallets?
Absolutely, and we recommend it for regular exporters. We offer recurring treatment services where we treat a set quantity of your pallets on a regular schedule so you always have compliant pallets on hand. This eliminates the risk of delays when an export order comes in unexpectedly.
Is heat treatment the same as kiln drying?
No. Kiln drying reduces moisture content in wood and is done at higher temperatures for longer durations. ISPM-15 heat treatment specifically requires a core temperature of 56 degrees Celsius for 30 minutes — this targets pest elimination, not moisture reduction. However, heat treatment does reduce moisture content as a side benefit.
Shipping Internationally?
Don't risk your shipment being rejected at the border. Get ISPM-15 certified pallets from Tucson Recycling Pallets — fast turnaround, full documentation, competitive pricing.