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Technical questions go straight to the graders.
A pallet pile is a near-ideal combustion geometry, and it formed by accident.
Idle wooden pallet storage is one of the most heavily studied fire hazards in warehousing, and the findings are consistent: stacks burn fast, hot, and in a way that overwhelms sprinkler systems designed for ordinary commodity. The reason is geometry rather than chemistry — large surface area, continuous vertical air channels between boards acting as flues, and low thermal mass so the material reaches ignition quickly.
The practical risk is specific: a building whose sprinkler design basis is ordinary-hazard commodity may not be designed for the pallet pile that has quietly accumulated inside it. And the pile is almost never a decision. Pallets arrive, a few are broken, those few go outside, and three years later there is a stack the height of a van against the back wall.
Three findings always travel together — fire load, pest habitat and crush risk — because they are the same pile viewed by three different inspectors. They also have the same fix, and unlike most safety improvements it can come with a cheque: a meaningful share of any old pile is still repairable, and we pay for that portion.
- Height is worse than mass. One tall stack beats two short ones for flue effect.
- Separation distance outdoors is the single most effective control, and it is free.
- Discrete stacks with real aisles have no protected interior for a fire to develop in.
- Your authority having jurisdiction and your insurer are the voices that matter, not us.
- Rotation starves pests. A stack that moves every three weeks is not a home.
- Storing idle platforms under a canopy or hard against a building wall
- Letting a pile grow past the point where its base can be inspected
- Assuming the sprinkler design covers a commodity class that was never surveyed
- Resolving the fire finding and being written up for pest habitat six months later
- Sending somebody to climb a settled pile to get a usable platform off the top
The tables behind these posts.
The same data we work from in the yard, so you can check the arguments above against the numbers.
| Document | When | Why it matters |
|---|---|---|
| Certified weigh ticket | Every inbound and outbound movement | The evidentiary basis of any diversion claim |
| Count sheet by grade | Every purchase of your surplus | You get the sheet, not a summary |
| ISPM-15 batch record | Any heat-treated consignment | Turns a port query into an email |
| Pallet Passport record | Any remanufactured platform | Origin, repair history, treatment batch, running ledger |
| Quarterly diversion report | Programme customers | Measured tonnage for ESG reporting, not an industry average |
| Feedstock segregation attestation | Mulch and bedding buyers | Written statement of what the wood was |
| Certificate of insurance | On request | Named-insured endorsements for on-site crews |
| Grading criteria statement | On request | The written standard our graders work to |
Ask for any of these before an audit rather than during one. Assembling the pack takes us an afternoon and converts verbal questions into documents.
The terms these posts assume you know.
Vocabulary is the cheapest performance upgrade in this industry — almost every argument we have with a new customer comes down to two people using the same word for different objects.
- Core
- An unsorted, un-repaired used pallet — raw material for a recycler. Sold by the load.
- Dunnage
- Loose wood used inside a load for blocking and bracing. Needs its own ISPM-15 treatment for export.
Where safety meets what we actually sell.
Safety questions we get.
How should idle pallets be stored?
Outside where you reasonably can, at a documented separation distance from the building and other combustibles; limited stack height; limited pile size with aisles between piles; away from openings, electrical equipment and anything that turns a pallet fire into a building fire. Your insurer and your authority having jurisdiction set the actual numbers.
What does a clean-out cost?
Less than most people expect, and sometimes nothing. A real share of any old pile is still repairable and we pay for that portion; board salvage has value and scrap metal recovery offsets a little more. Several clean-outs we have quoted came in at a net credit to the customer.
Is this really a serious risk or a sales argument?
It is a well-documented fire protection subject with decades of research behind it, and it is also the easiest finding for a surveyor to write up. We are a pallet yard with opinions about geometry, not fire engineers — but we have never once been called by somebody who regretted removing an accumulated pile.
Eleven more areas.
NoteSubject pages are reachable from the blog index and from every post rather than the main menu. The full archive lists all forty posts by year.