The five-minute test for a rackable pallet

We buy recovered pallets, repair them, and sell them graded. That means we have to make a yes/no decision on a pallet roughly nine hundred times a week. Over the years the process has compressed into a sequence that takes under five minutes and almost never gets it wrong.

Before you start: know what you are grading for

A pallet that is fine for floor stacking may be unsafe in a rack, and a pallet that is fine in a rack may be unacceptable for a retail-facing display. Decide which question you are asking before you look at the first board, because the thresholds are different.

1 · Stringers or blocks, from the side (45 seconds)

This is the structural decision and it comes first because it is the only one that can kill somebody. Look down the length of each stringer. You are looking for a crack running with the grain, particularly at the fork entry notch.

• A crack through more than half the stringer depth at a notch — reject, do not repair.
• A crack on one face only, outside the notch — repairable with a companion board.
• Any crack you can open with your thumb — reject.
• A stringer that has been previously plated: check the plate is tight and the wood under it is sound. Previous repairs are fine; previous repairs hiding rot are not.

2 · Deck boards, top and bottom (60 seconds)

Count missing and broken boards. Our thresholds, which are close to industry norm:

The lead boards — the outermost top and bottom boards at each end — carry the fork entry load and the rack beam contact. Damage there is a reject regardless of how good the rest looks.

3 · The lift test (30 seconds)

Pick one corner about four inches off the ground and watch the opposite corner. A sound pallet lifts as a unit. A pallet with loose fasteners twists visibly, and that twist is where the next failure comes from. If the diagonal opposite corner lags by more than an inch or so, it goes to the bench.

4 · Nails and fasteners (45 seconds)

Run a gloved hand across the top deck. Protruding nail heads tear product, film and hands, and they indicate boards that have started to work loose. Any nail standing proud by more than about a sixteenth of an inch either gets driven back or the board gets replaced.

5 · Moisture and biology (30 seconds)

Pick it up. A pallet that feels noticeably heavier than its siblings has absorbed water, and wet wood loses a significant fraction of its fastener holding strength. Look for dark staining, soft spots at the ends of boards, and any fungal growth.

• Surface staining with sound wood underneath — acceptable for industrial use.
• Soft, punky wood you can press a thumbnail into — reject.
• Visible mould — reject for any food, pharmaceutical or retail-facing use. We do not clean and resell these.
• Heat-treatment stamp missing and the pallet is going for export — not a safety issue, a customs one.

6 · Squareness (20 seconds)

Set it on flat ground. A pallet that rocks will transmit that instability up through every layer of whatever you stack on it, and in a rack it loads two beams instead of four.

What this adds up to

Nine hundred decisions a week, five minutes each, and the only one that really matters is the stringer crack.

Everything after step one is an economic judgement about repair cost against pallet value. Step one is a safety judgement, and it is the reason we do it first, every time, before anybody gets interested in whether a deck board is worth replacing.

The repair economics, briefly

A GMA pallet with one cracked deck board is about a twenty-minute bench job using reclaimed lumber. At current replacement costs that is comfortably worth doing. Two broken stringers is not — the labour exceeds the value and you end up with a pallet nobody fully trusts. We would rather send that one to the chipper and tell you why.