Blog · 2 posts · 1,886 words

Upcycling

What a short board is good for, and how reclaimed material becomes something worth paying for.

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2posts in this subject
1,886words written
9 mintotal reading time
3defined terms
Primer

Between the repair line and the grinder sits the most interesting wood in the yard.

Every repair generates offcuts. A replaced lead board leaves forty inches of sound timber; a stringer cut back past a break leaves a foot of hardwood. None of it is long enough to repair another platform, all of it is far too good to grind, and for the first seven years of this company it all went into the chip pile.

What makes reclaimed pallet wood commercially interesting is three things. It is dry — years in service beat any kiln for stability. It is dense and awkward, because pallet lumber comes from the parts of the log furniture makers reject. And it carries a record: stencils, mill stamps, nail shadows, the grey of eight winters on one face and raw pine on the other. That record is the product, which is why sanding reclaimed wood until it looks new is a strange thing to pay for.

Three operations separate usable material from a pile of scrap: de-nailing, which is most of the labour and all of the safety risk; tonal sorting, which is what makes a wall read as texture rather than noise; and acclimatisation, which is the step everyone skips and the reason for most gap complaints in February.

If you only remember five things
  • Order 15 to 20 percent over your measured area. Reclaimed material has a genuine cull rate.
  • Sort by tone before you install. Unsorted salvage looks like an accident.
  • De-nail completely and metal-detect every board. One missed fastener ruins a blade or a hand.
  • Acclimatise for a week minimum in the room where it will live, loosely stacked with spacers.
  • Untreated feedstock only for anything holding soil, food or a person — documented in writing.
Common mistakes in this area
  1. Buying the unsorted pile to save money and losing three times that in labour
  2. Skipping acclimatisation and discovering gaps in the first heating season
  3. Sealing one face only, which is how boards cup
  4. Using bright fasteners, which read as new and fight the material
  5. Ignoring the reaction-to-fire implications of untreated timber in a commercial interior
Reference

The tables behind these posts.

The same data we work from in the yard, so you can check the arguments above against the numbers.

Lumber species — what the wood itself will and will not do
SpeciesGroupSpecific gravityStiffnessNail holdingWeightCostNote
Southern yellow pineSoftwood0.51 (oven-dry sg)ModerateModerateLight$Plantation-grown, abundant, dimensionally stable once dried. The default for new builds.
Appalachian red oakHardwood0.63HighExcellentHeavy$$$Stiffest common option. Best for racked spans and high-cycle closed loops.
Poplar / tulipwoodHardwood0.42ModerateGoodLight-medium$$Light for a hardwood, clean-looking, favoured on the millwork bench.
Maple (soft)Hardwood0.54HighVery goodMedium-heavy$$Common in mixed Appalachian loads; good all-rounder.
SweetgumHardwood0.52ModerateGoodMedium$Prone to warping if dried badly. Fine in a repaired platform, awkward in millwork.
Mixed AppalachianHardwood0.42–0.63VariableGood–excellentMedium-heavy$$What a recycled hardwood load actually is. Strong, heavy, and genuinely inconsistent.

A recycled load is a mix by definition, because the recovered pool is a mix. We sort to a single species group on request, which costs more and takes longer.

Moisture content — states, risk and what to specify
StateMoisture contentMould riskNote
Green, off the saw60–120%+Very highHeavy, moves as it dries, blooms readily. Rarely what you want.
Air dried, yard stored15–22%ModerateTypical of outdoor recycled stock in a humid month.
Kiln dried≤19%LowBelow the biological threshold for mould. The usual specification.
Kiln dried, millwork grade8–12%Very lowFor cladding and interior work, matched to heated-interior equilibrium.
Reclaimed, long service10–16%LowYears of cycling beat any kiln schedule for stability. An under-appreciated advantage.

Moisture content is water weight divided by oven-dry weight, which is why green softwood can exceed 100%. Heat treatment is not kiln drying — see moisture explained.

Vocabulary

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.

Full glossary
Board foot
A unit of lumber volume: 12 × 12 × 1 inches. A 48×40 GMA pallet contains roughly 35–40 board feet.
Core
An unsorted, un-repaired used pallet — raw material for a recycler. Sold by the load.
KD
Kiln dried — moisture reduced, usually to ≤19%, to prevent mould and dimensional movement.
Questions

Upcycling questions we get.

Is reclaimed pallet wood safe for interior use?

The untreated line is, and we document the feedstock in writing. Chemically treated lumber is segregated on receipt and never enters the millwork stream. Heat-treated wood is just wood that has been heated and is fine. For commercial interiors, ask your designer about reaction-to-fire classification — treat our material as untreated unless you specify otherwise.

Can I use pallet wood planters for growing food?

Yes, from our untreated-only line, with a written feedstock attestation. We will not sell you coloured mulch for a vegetable bed or build a food planter from stock whose treatment history we cannot document.

Why does sorted cladding cost more than a pile of boards?

Because the sorting is most of the value. De-nailing, metal detection, tonal grading into warm, grey and mixed, and culling the boards that will fight their neighbours — that labour is the difference between a wall that reads as intentional and a weekend of swearing.

Other subjects

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.

Next step

Let's get wood moving

Whether you have 40 broken pallets behind the building or need 4,000 a month, the next step is the same: tell us the footprint and the frequency.

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