Services / export compliance

Heat treatment & ISPM-15

Export wood needs a stamp, and the stamp needs a kiln with a record. We heat treat to 56 °C core for 30 minutes, mark to ISPM-15, and keep the chart recorder data on file for seven years.

Long rows of clean, freshly graded pallets stacked high in a bright warehouse — Grade A pool, ready to ship

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Portland, OR · email only, no phone

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ISPM-15 is the international rule that stops insects travelling inside packaging. In practice it means your pallet must be heat treated (HT) or fumigated, and visibly stamped with a registered mark. We do the HT route only — methyl bromide has no place in a company like ours.

Treatment is available on our own stock, on new builds and on customer-owned pallets. Loads are typically treated and released the same day, with certificates emailed before the truck leaves.

How it runs

Step by step

Nothing here is a black box. If a step does not fit your site, say so and we will redesign it rather than pretend.

01
Book the batch
Tell us count, size and destination country. Some countries have extra requirements; we flag them.
02
Treat and record
56 °C at the core for 30 continuous minutes, logged by chart recorder with probe placement photos.
03
Stamp
Registered IPPC mark with our facility code, applied to two opposite sides.
04
Document
Treatment certificate per batch, archived for seven years and retrievable by batch number.

The fine print

Terms, limits and honest caveats

Standard: ISPM-15, HT method (56 °C core / 30 minutes)
Capacity: Up to 1,100 pallets per day
Turnaround: Same day for booked batches, 48 hours standard
Records: Chart recorder data and certificates retained 7 years
Not offered: Methyl bromide fumigation — by choice, permanently

The three failure modes we actually see

First: assuming new wood is automatically compliant. It is not — untreated new lumber needs treatment and marking exactly like used wood. Second: assuming recycled wood cannot be compliant. Also false; a structurally sound recycled pallet treated in our kiln and stamped by our registered facility is fully ISPM-15 compliant.

Third, and by far the most common: mixed loads. One untreated dunnage board in a container of beautifully stamped pallets can trigger a hold on the whole shipment. Bracing, blocking and chocks are solid wood packaging too, and they need the mark.

What a compliant mark contains

Four elements: the IPPC wheat symbol, the two-letter ISO country code, the facility registration number issued by the national plant protection organisation, and the treatment abbreviation — HT for heat treatment, MB for methyl bromide. We produce HT only, permanently, by choice.

Marks must be legible, permanent and visible on at least two opposite sides. A mark painted over, sanded away or applied with a marker pen is not a mark, and inspectors at destination ports are looking for exactly this.

Records nobody asks for until they do

Each treated batch generates chart recorder data showing core temperature over time, probe placement photographs, and a treatment certificate referencing the batch number. We archive all of it for seven years and can retrieve any batch on request.

Customers occasionally ask why we keep records nobody has ever requested. The answer is that the one time somebody does request them, it will be during a dispute, and having the chart will be worth more than every hour spent filing them.

Process

How heat treatment order actually happens

No sales team, no discovery call, no CRM sequence. We have no telephone, so everything below happens in writing and stays searchable afterwards.

What we need: footprint, grade, count, ZIP, and how the pallet is handled.
Nice to have: a photo, your dock height, whether you run forklifts or jacks.
Not needed: a purchase order, an account, or a phone conversation.

01
You send the form
Every form on this site is the same form and reaches the same yard team. Required fields are validated as you type, so a mistyped ZIP or email is caught before anything is sent.
02
We check today's stock
Used pallet availability moves daily. You get a real count and a real date rather than a list price that was true last quarter.
03
A written quote, within one business day
Price per unit by grade, freight itemised separately, delivery window, and any honest reservations we have about the specification you asked for.
04
Delivery, count, paperwork
Signed count sheet on arrival, weight ticket where relevant, and a diversion certificate for anything we collect for recycling.

PalletLinker published ratings. Quoted back to you in writing on every order. Racked figures assume edge support only, evenly distributed, no overhang.
Pallet	Static	Dynamic	Racked	Tare	Stack height
48×40 GMA Grade A	8,000 lb	2,800 lb	2,200 lb	33–37 lb	3 high loaded
48×40 GMA Grade B	6,500 lb	2,200 lb	1,500 lb	30–36 lb	2 high loaded
48×40 block, 4-way	9,000 lb	2,500 lb	2,400 lb	37–41 lb	4 high loaded
EPAL / Euro 1	8,800 lb	3,300 lb	2,200 lb	48–55 lb	3 high loaded
42×42 beverage	7,500 lb	2,600 lb	1,900 lb	35–39 lb	3 high loaded
48×48 drum	9,500 lb	3,000 lb	2,300 lb	40–45 lb	2 high loaded
36×36 nursery deck	4,500 lb	1,400 lb	900 lb	24–28 lb	2 high loaded
48×20 half pallet	3,000 lb	1,400 lb	900 lb	18–22 lb	2 high loaded
Remanufactured 48×40	6,000 lb	2,000 lb	1,200 lb	30–38 lb	2 high loaded
Heavy skid 96×48	16,000 lb	12,000 lb	Not for racking	95–130 lb	1 high

01
Published specifications
Grade definitions, dimensional tolerances and racked load ratings in writing. Most yards will not publish a racked figure at all.
02
Hand graded, four-hour triage
Two graders per line, flipped and sounded. Every inbound load is triaged within four working hours so nothing rots in a mystery pile.
03
Zero landfill, measured
Weighed in, weighed out, reconciled monthly. Zero pounds landfilled in 2025, with a certificate you can hand to an auditor.
04
Everything in writing
No phone line by choice. Every price, date and commitment lives in an email you can search, forward and hold us to.
05
Repair before replacement
A repair bay, a kiln, a de-nailer and a grinder on site. Repairing a pallet avoids roughly 11 kg CO₂e and costs you half of new.
06
Traceable by stamp
Every unit carries a Pallet Passport ID burned into a stringer. Type it in and read its species, cycles, repairs and carbon ledger.

Receiving

What to check on delivery

Eleven minutes on the first three deliveries sets the tone for the whole relationship. Do this with any supplier, including us.

Check	How	Pass	If it fails
Overall size	Tape measure, both dimensions, one pallet in ten	Within 1/4" (Grade A) or 1/2" (Grade B)	Note it on the delivery ticket
Squareness	Steel square in two opposite corners	Within 1/4" on the diagonal	Reject the unit; we replace next route
Protruding nails	Palm flat across the top deck	Nothing catches	Reject — this is what tears packaging
Bottom boards	Flip one pallet in ten	No split through a nail line	Reject; it will fail in a rack
Moisture	Lift one. Wet pallets are 8–10 lb heavier	Feels dry, sounds sharp	Floor stack to dry, do not rack at rating
Mould or staining	Visual, both decks	Weathering only, no fuzz	Reject for any food-contact use
Grade mix	Count against the delivery note	Matches what you ordered	Ask for the count sheet to be corrected

Write failures on the delivery ticket rather than calling — a written record is the only thing that reliably changes supplier behaviour, and we replace rejected units on the next route with no restocking charge.

Avoid these

Six expensive mistakes

Every one of these has cost a customer real money in front of us.

01
Buying on unit price alone
Purchase price is 5–15% of total cost per trip. Tare weight, damage rate and receiving-dock rework are usually larger line items, and none of them appear on a quote comparison.
02
Accepting overhang
A load extending even an inch past the deck transfers weight into the packaging instead of the pallet. Case compression strength drops sharply and the damage appears three handling events later, in somebody else's warehouse.
03
Racking on a dynamic rating
Dynamic is what a pallet carries while being moved. Racked — supported only at its edges — is smaller and is the only number that matters in beam racking. Ask for it in writing.
04
Specifying Grade A out of habit
For one-way shipping, floor stacking and closed loops, Grade B does the same job for roughly 20% less. Over-specifying is paying for appearance.
05
Storing pallets on bare ground
Two spare pallets as a base and a tarp that reaches the sides will keep a stack usable through a Portland winter. A soaked pallet gains nine pounds of paid freight weight and loses stiffness.
06
Forgetting that dunnage needs a stamp
On export loads the bracing, blocking and chocks are solid wood packaging too. One untreated board can hold an entire container at a foreign port.

The yard

What stands behind this page

14kpallets graded monthlytwo hand-grading lines
1,100heat treated per dayISPM-15, chart recorded
4.1M lbwood diverted last year68% reused whole
0 lblandfilled in 2025weighed and reconciled

What this means for your reporting

Reuse is the cheapest emissions reduction available in logistics, and it is also the easiest to document. We model a new 48×40 softwood pallet at 14.2 kg CO₂e — lumber production, fasteners, assembly and delivery — and a reuse cycle at 3.1 kg, covering collection, repair materials, yard overhead and redelivery. The difference, 11 kg CO₂e per reuse, is the figure we publish.

We also publish the caveat: that figure assumes a reused pallet genuinely displaces the manufacture of a new one. Economists call the gap leakage, and nobody in this industry can honestly claim it is zero. We think displacement is high because the pallet market is regional and price-responsive, but we will not pretend it is perfect.

Which is why we lead with the number that needs no assumptions: measured landfill diversion. Landfilled wood decomposes anaerobically and releases methane, roughly 28 times worse than CO₂ over a century. Keeping four million pounds of wood out of a hole in the ground is a benefit you can weigh.

Per-unit figures

New pallet: 14.2 kg CO₂e (range 12.8–16.1)
Reused graded pallet: 3.1 kg CO₂e
Repaired customer-owned: 2.2 kg CO₂e
Avoided per reuse: 11 kg CO₂e, published
Wood kept in service: 33–37 lb per unit
Biogenic carbon stored: ~26 kg CO₂-equivalent

The full derivation

Questions

Asked often

Does heat treatment weaken the wood?

No. It drives moisture out and kills pests; it does not degrade structural strength. Kiln-dried pallets are usually lighter and more dimensionally stable.

Can you treat pallets we already own?

Yes, as long as they are structurally sound and free of paint or contamination that would prevent a clean stamp.

Do recycled pallets qualify?

Absolutely. A recycled pallet treated and stamped by us is fully ISPM-15 compliant. Reuse and export compliance are not in conflict.

Questions

What people ask about heat treatment & ispm-15

What is the minimum order or pickup?

No hard minimum for collection at the yard — come and take four pallets on a Saturday morning if you like. For delivery it is 50 units inside Portland metro and 150 outside it, because the truck has to earn its diesel. Outside our 180-mile fleet radius we quote through partner yards and freight, with the lane itemised.

How fast can this happen?

Standard 48×40 Grade A and B stock: same day for pickup, next day for metro delivery. Block pallets one to three days. Custom builds five to nine business days; engineered runs two to three weeks. Heat treatment is same day for booked batches and 48 hours standard. Written quotes always come back within one business day.

Why is there no phone number anywhere?

Because verbal quotes get remembered differently by different people. Since 2018 every price, date and commitment we make exists in an email you can search and forward. Most customers dislike it for about a month and then prefer it. Everything else happens in person at 3821 NW St Helens Rd, Portland, OR 97210.

Can I inspect before committing?

Please do. Visit the yard by email arrangement — closed-toe boots required, hi-vis provided — or ask for photographs of the actual pool your order would come from. We would rather lose an order than have a customer discover a surprise on their dock.

What documentation comes with it?

A written quote, a signed count sheet by grade, a weight ticket where material is weighed, heat-treatment certificates for treated batches (archived seven years), and a monthly diversion certificate for anything we collect for recycling — measured pounds kept out of landfill, which is the figure your ESG report actually needs.

What will you refuse to do?

Take methyl-bromide fumigated, chemically contaminated or fire-damaged wood. Buy marked rental-pool pallets, which belong to their operator. Promise same-day delivery outside the metro. Or quote a grade we do not think will survive your handling — we will specify downward and explain why.

Vocabulary

Terms used on this page

Defined the way a yard uses them, not the way a standards document does.

Block pallet: A pallet supported by nine solid blocks rather than stringers, giving true four-way entry and better racked performance.
Bolster: A squared timber used to block and brace loads inside trailers and containers. We re-saw ours from retired stringers.
Chamfer: The bevelled edge on a bottom deck board that lets a pallet jack roll on without catching.
Companion stringer: A second timber nailed alongside a cracked stringer to span the damage and restore the load path.
Core: Low-grade pallet material bought for board and fibre recovery rather than resale.
Closed loop: A pallet population circulating between known points and returning. Cycle time, not consumption, governs pool size.
Deck board: The boards nailed across stringers or blocks forming the top and bottom surfaces of a pallet.
De-nailer: The machine that separates deck boards from stringers and removes fasteners before fibre recovery.

The full glossary, 36 terms

Long reads

From the journal · written in the yard

Decision table

Five ways to get a pallet, compared honestly

Including the two we do not sell. Cost index is against a new wooden pallet of the same footprint.

Indicative figures for a 48×40 footprint in the Pacific Northwest, 2026. Rental pool economics vary by contract and are deliberately shown as a range.
Option	Cost index	Trips	Repairable	Carbon per use	Best for	Watch out for
Grade A recycled	45–55	9–14 then repair	Yes	3.1 kg	Almost everything	Colour varies; tare varies by a few pounds
Grade B recycled	30–40	7–11 then repair	Yes	3.1 kg	One-way, floor stacking, closed loops	Lower racked rating (1,500 lb)
Remanufactured	25–35	5–8	Yes	4.8 kg	One-way on a budget	Visibly mixed boards; 1,200 lb racked
New wooden	100	15–20 then repair	Yes	14.2 kg	Tight tolerances, audits, odd sizes	Pays for appearance you may not need
Plastic	500–1,000	30–100	No	High embodied, low per-use	Wash-down, deep freeze, pharma	Cracks end its life; not repairable
Rental pool	Per-trip fee	Managed	By operator	Operator's figure	Exchange networks, retail mandates	Pallets are not yours; losses are chargeable

We sell the first four and supply plastic where a wash-down line genuinely needs it. We do not operate a rental pool, and we will not buy marked pool pallets from you — they belong to their operator. Full comparisons

Worked example

Cost per trip, calculated properly

A real comparison for a plant shipping 600 pallets a month on a weight-sensitive lane. Copy the method, not the numbers.

Illustrative. Your lane rate, damage rate and disposal cost will differ — the point is that unit price is the smallest line in the table.
Line	New pallet	Grade A recycled	Grade B recycled	Note
Unit purchase price (index)	100	50	35	The only number most procurement systems compare
Trips before repair	15–20	9–14	7–11	New lasts longer; it also costs twice as much
Purchase cost per trip (index)	5.6	4.3	3.8	Price divided by trips
Tare weight	36 lb	35 lb	33 lb	Recycled fir is often lighter than new hardwood
Freight weight penalty	Baseline	Neutral	−3 lb/unit	Only matters on weight-limited lanes
Expected damage rate	0.3%	0.3%	0.4%	Graded stock behaves; ungraded stock does not
Receiving rejections	Rare	Rare	Occasional	Graded + written tolerance removes most of this
End-of-life cost	0	0	0	We collect and pay or collect free — never a disposal fee
Documentation value	None	Diversion certificate	Diversion certificate	Reportable ESG outcome at no extra cost

Purchase price share of total cost5–15%
Freight weight share~30%
Damage & rework share~38%
Handling labour share~20%

Build this yourself

One row per option, six columns: unit price, tare weight, expected trips, damage rate, rejection risk, disposal cost. Multiply out across annual volume. It takes an afternoon, the cheapest unit price almost never wins, and we will happily help build it — including with numbers that do not favour us.

The full article

Diagnostics

Read the damage, fix the cause

Damage patterns are not random. Each one points at a specific handling behaviour, and fixing the behaviour is worth more than fixing the pallets.

What you see	What it almost always means	What to change	Cost to fix
Split lead boards at one end	Forks driven in too fast and too high	Operator training; dock lighting. Usually one shift is responsible	Free
Torn stringer notches	Pallet jacks entering notched stringers at an angle	Specify block pallets with true four-way entry	Spec change
Bottom boards ripped off cleanly	Pallets dragged rather than lifted, or frozen to a cold-store floor	Floor condition, forklift capacity at peak	Low
Crushed corner blocks	Stacks higher than the rating, or uneven loads on one corner	Stack-height policy; centre the load	Free
Out of square, nothing broken	Racking loading pallets diagonally — beams at different heights	Rack survey. This one is worth chasing	Medium
Mould in the middle of a stack	Wet pallets stacked tight with no airflow	Store off the ground, cover the top, leave side gaps	Low
Protruding nails tearing cases	Ungraded stock, or units repaired without re-checking	Buy graded; reject on the ticket	Free
Deck boards cupping	Moisture cycling between a freezer and a humid dock	Kiln-dried pool; helical fasteners	Spec change

Keep thirty of your own broken pallets aside for a month and photograph the damage. Patterns appear quickly. We do this analysis free with any repair quote, because a customer whose damage rate halves buys from us for a decade.

Storage

Keeping pallets usable through a wet winter

Portland takes about 36 inches of rain a year and most of it lands between November and March. You do not need a building to survive that — you need three habits.

Off the ground: Two spare pallets as a base. Anything touching soil wicks water and rots from the bottom layer up.
Covered on top: A tarp that actually reaches the sides. Rain enters a stack from above, not from the side.
Air gaps, not a seal: A sealed tarp traps condensation and produces the mould problem you were avoiding. Leave the sides open.
Away from drip lines: Anything under a roofline drip edge stays wet all winter, regardless of what you cover it with.
Aligned with the wind: Stacks oriented with prevailing wind dry noticeably faster. Free, and it works.
Rotate the pile: First in, first out. The bottom of an untouched stack is where pallets go to die.

What moisture does, measured on our own scale and grading line.
Condition	Weight	Stiffness	Rack it?
Kiln dried (≤19% MC)	33 lb	Full rating	Yes
Air dried, covered	35 lb	Full rating	Yes
Damp, uncovered 2 weeks	39 lb	Reduced	Floor stack
Rain-soaked	45 lb	Materially reduced	No — let it dry
Frozen wet	45 lb+	Unpredictable	No

Nine pounds of water per pallet is nine pounds of freight you pay to move. Across 600 units that is more than two and a half tonnes of water on a truck. Field notes on moisture

Timing

The pallet year in the Pacific Northwest

Supply and price both move with the seasons. Knowing the shape of the year is worth more than negotiating hard in October.

Month	What the region is doing	Pool depth	What to do
January	Everything quiet; recycling inflow steady	Deep	Best buying window of the year. We stockpile now
February	Repair bay catching up	Deep	Lock quarterly pricing; book spring nursery stock
March	Nursery season begins	Tightening on 36×36	Spring stock should already be reserved
April	Nursery peak; landscaping starts	Tight on nursery decks	Mulch and bedding demand rises sharply
May	Nursery winding down	Normalising	Good month for custom builds and crate projects
June	Berry harvest	Normal	Watch for short-notice agricultural requests
July	Berries, early stone fruit	Normal	Forecast your October number now
August	Pre-harvest build-up	Normalising down	Harvest slots allocated this month
September	Hazelnut and grape harvest begins	Tight	Reserved stock only. Spot buyers struggle
October	Peak harvest; cider apples	Tightest of the year	Do not start here. Everyone calls at once
November	Harvest ends; rain begins	Recovering	Grading gets stricter; covered storage fills
December	Retail peak, agriculture stops	Deep again	Mulch demand collapses, biomass rises

Lifecycle

Eleven years in the life of one pallet

A composite built from real Passport records. Individual units vary enormously; the shape does not.

Year 0
Built
Douglas fir from a mill inside 180 miles. Seven top boards, five bottom, three stringers, helical nails, 2,800 lb dynamic.
Year 0–2
Trips 1–4
Beverage route work. Loaded, racked, unloaded, returned. Colour starts to grey; nothing structural changes.
Year 3
First inspection failure
A lead board splits at a nail line. Twenty-minute fix: replacement deck board, re-square, re-stamp. Graded B from here.
Year 3–6
Trips 5–9
Nursery and agricultural work, where deck gaps matter more than appearance. Spends two winters partly outdoors.
Year 7
Companion stringer
A stringer cracks. A second timber is fitted alongside, spanning the crack. Measurably stiffer than before.
Year 7–10
Trips 10–13
Local one-way freight. Tare weight has drifted up a pound from accumulated moisture cycling.
Year 11
Retired from carrying
Two bottom boards gone, deck softening. Economic repair ends here. Chalk line through the whole pallet.
Year 11
Dismantled
De-nailed board by board. Clear boards to the fabrication shop; structural stock back to the repair bay as donor material.
Year 11
Recovered
What is left goes through a magnet and a grinder: mulch, bedding shavings, biomass fuel. The nails go to a scrap partner four miles away.
Year 11+
Still working
The best boards are now shelving in a bottle shop, carrying its Passport ID burned into the end grain.

Thirteen trips, two repairs, roughly 143 kg CO₂e avoided against building thirteen new pallets, and nothing landfilled at the end. Look up a real record

Go deeper

Everything else on this site

Read the journal

Next step

Shall we put a number on it?

Email reaches the same yard team that graded the stock. Written quotes, one business day, no phone tag.

Heat treatment & ISPM-15

Put this page into a quote.

Step by step

Book the batch

Treat and record

Stamp

Document

Terms, limits and honest caveats

The three failure modes we actually see

What a compliant mark contains

Records nobody asks for until they do

How heat treatment order actually happens

You send the form

We check today's stock

A written quote, within one business day

Delivery, count, paperwork

Published specifications

Hand graded, four-hour triage

Zero landfill, measured

Everything in writing

Repair before replacement

Traceable by stamp

What to check on delivery

Six expensive mistakes

Buying on unit price alone

Accepting overhang

Racking on a dynamic rating

Specifying Grade A out of habit

Storing pallets on bare ground

Forgetting that dunnage needs a stamp

What stands behind this page

What this means for your reporting

Asked often

What people ask about heat treatment & ispm-15

Terms used on this page

From the journal · written in the yard

ISPM-15 without the panic: what the stamp means and how to avoid a rejected container

Reading forklift damage: what the marks on a returned pallet tell you

A pallet glossary for people who have to buy them

Fifteen years on St Helens Road: what we got wrong

Five ways to get a pallet, compared honestly

Cost per trip, calculated properly

Read the damage, fix the cause

Keeping pallets usable through a wet winter

The pallet year in the Pacific Northwest

Eleven years in the life of one pallet

Built

Trips 1–4

First inspection failure

Trips 5–9

Companion stringer

Trips 10–13

Retired from carrying

Dismantled

Recovered

Still working

Go deeper

Everything else on this site

Shall we put a number on it?