A wooden pallet's life cycle runs from forest to sawmill, through pallet manufacture, then repeated use, repair and reuse, and finally recycling into mulch, animal bedding or fuel. Wood pallets are among the most reused packaging products: in a US study of 2016 production, about 65% of recovered pallets were repaired and resold, and less than 1% went to landfill.
Stage 1: Forest and sawmill
Pallet lumber comes mainly from low-grade logs and sawmill by-products: small-diameter logs, thinnings, crooked or knotty stems that cannot go to furniture or construction. In many regions pallets and wood packaging are an important outlet for low-value timber. Origin and certification matter; see sustainable forestry and pallets and FSC and PEFC certification.
At the sawmill, logs are debarked, sawn into boards, blocks and stringers, and trimmed. By-products such as bark, sawdust and chips are used as fuel or raw material for panels and paper. See the sawmill process and log yield and cutting patterns.
Stage 2: Drying, treatment and manufacture
Boards are dried naturally or in kilns to reduce shrinkage, mold and weight; see kiln drying lumber and air drying lumber. Components are assembled with nails, usually by machine. For international shipments, the finished pallet receives ISPM 15 treatment and an official mark; see heat treatment and the ISPM 15 mark. How production works end to end is in how pallets are made.
Stage 3: First use
Pallets leave the plant and enter service as one-way pallets, used once and discarded, or as reusable pallets that circulate through exchange or rental systems. The difference between these paths determines the whole life cycle; see one-way vs reusable pallets.
How many trips a pallet makes is not a fixed number. It depends on construction, handling, load and the discipline of the system. Block pallets in closed or well-managed exchange systems can be reused many times; light export pallets often make one trip. Published figures for average trips vary by system and are not given here.
Stage 4: Inspection, repair and reuse
Used pallets return to a collection point or recycler where they are inspected and sorted. Sound pallets are resold; damaged ones are repaired by replacing broken boards, stringers or blocks. This is the heart of the pallet's circularity. See pallet repair and the used pallet trade.
The most detailed US data come from a Virginia Tech study of 2016. The industry built about 513 million new wood pallets that year, and about 390 million recovered pallets were handled by recyclers, with the following outcomes:
| Outcome for recovered pallets (2016) | Share |
|---|---|
| Repaired and resold as used pallets | 65% |
| Dismantled for other uses (parts) | 18.1% |
| Ground or chipped | 10.6% |
| Sold without repair | 5.5% |
| Landfilled | Under 1% |
In Europe, the EPAL system provides for repairs by licensed repair companies, marked with special nails; see the pallet exchange system.
Stage 5: Material recovery
When a pallet can no longer be repaired, it is dismantled into reusable boards and blocks, or ground into wood fiber. The same 2016 study found that recovered pallet waste went mainly to fuel (44.8%), landscape mulch (34.2%) and animal bedding (17.3%), with 3.7% for other uses. Pallet wood may also be used in panel manufacturing, as described in pallet wood waste and biomass and engineered wood in packaging. The steps are covered in how pallet recycling works.
Stage 6: Energy recovery or disposal
Wood that cannot be recycled, for example because it is contaminated, may be burned for energy, preferably under controlled conditions with air-pollution controls. Landfill is the last option and has become rare. A Virginia Tech study published in 2018 and funded partly by the USDA Forest Service and The Pallet Foundation reported that landfill disposal of pallets had fallen by 86%, and that about 95% of wooden pallets were being recycled rather than landfilled.
Carbon and environmental view
Wood stores carbon absorbed from the atmosphere during tree growth, and this storage continues while the pallet is in use and as long as it remains as a product. The carbon is released when the wood decomposes or is burned. Extending life through repair delays this release and avoids new production. Quantified comparisons with plastic are in the carbon footprint of pallets and wood vs plastic environmental impact.
What shortens or extends the life
| Factor | Effect |
|---|---|
| Handling by forklift | Fork impact damages boards and stringers, and is a frequent cause of failure |
| Overloading and poor stacking | Cracking and permanent deformation; see pallet stacking rules |
| Moisture and storage | Mold and decay; see mold and blue stain |
| Quality of original build | Better wood and fasteners extend life |
| Repair policy | Prompt repair restores load rating |
Frequently asked questions
How long does a wooden pallet last?
There is no fixed life. A one-way pallet may make a single trip, while a well-maintained block pallet in an exchange system can be repaired and reused many times over many years.
What happens to pallets that cannot be repaired?
They are dismantled for parts or ground into material for fuel, mulch or animal bedding. Landfill is rare in countries with mature recycling.
Are wooden pallets recyclable?
Yes. A 2018 US study reported that about 95% of wooden pallets were recycled rather than landfilled.
Does repair affect ISPM 15 status?
It can. Repaired pallets must keep a valid mark, and replacement wood must be treated; see the guide on reused and repaired wood packaging.
Sources
- Investigation of new and recovered wood shipping platforms in the US — BioResources / Virginia Tech
- Study shows 95% of wooden pallets are recycled — The Pallet Foundation
- Disposal and recovery of wooden pallets — Virginia Tech
- Wooden or plastic pallets: which are more eco-friendly? — Penn State
- ISPM 15 publication page — IPPC