Pallets: Choosing the Best Option for Your Pallet Racking

Pallet racks are engineered systems. Pallets, on the other hand, are often treated like disposable accessories. That disconnect causes more problems than most warehouses realize. 

The wrong pallet can:

• Bend beams
• Create unsafe loads
• Slow picking
• Shorten the life of an otherwise well-designed rack system

Pallets, racking, and loads don’t operate independently. They work as a single system. And when one part doesn’t match the others, the entire operation feels it.

In this article, I’ll break down the most common pallet types, explain how pallet design affects pallet racking, and walk you through how to choose the right pallet option for your specific storage needs.

Why Pallet Choice Matters for Pallet Racking

It’s easy to think of pallet racking as the structural backbone of your warehouse. And it is. But pallets are the interface between your product and that structure. 

Pallets carry the load. Racks carry the risk.

Pallet design directly affects how weight is distributed across rack beams. Poorly supported pallets can increase beam deflection, concentrate loads in the wrong places, and accelerate wear on rack components. Over time, that stress adds up — even if the rack itself was engineered right.

When pallet choice is wrong, the symptoms show up quickly:

• Loads sag between beams.
• Forklifts struggle to place or retrieve pallets cleanly.
• Beams get bent or damaged.

And suddenly, your operation is a lot less safe.

In my experience, many rack issues don’t start with bad steel or bad installation. They start with pallets that simply weren’t designed to work with the racking system they’re sitting on.

The Most Common Pallet Types Used in Warehouses

Most warehouses rely on a small handful of pallet types, but how those pallets behave in pallet racking can vary significantly. Understanding the tradeoffs helps you avoid problems down the line.

Wood Pallets

Wood pallets are by far the most common option. 

They’re inexpensive, widely available, and easy to replace when damaged. That low upfront cost makes them pretty appealing. 

The downside, though, is inconsistency. Wood pallets vary in quality, can splinter or crack, and are more prone to deflection when you store them in racks for long periods — especially if you reuse them beyond their intended lifespan.

Plastic Pallets

Plastic pallets offer more consistency. Their dimensions are uniform, they don’t splinter, and they’re easier to keep clean. In the right application, they can last much longer than wood. 

However, not all plastic pallets are rack-rated. Some designs flex under static loads, which can create sagging issues when pallets sit in racking for extended time.

Composite or Pressed-Wood Pallets

Composite or pressed-wood pallets sit somewhere in between. 

They’re lightweight, dimensionally consistent, and often used for exporting. But they typically don’t hold up as well under long-term rack storage — particularly with heavier loads.

Metal Pallets

Metal pallets are the most durable option. They give you the highest load capacity with minimal deflection, making them ideal for heavy or long-term storage. 

The tradeoff is cost. They’re expensive. And that usually limits them to specialized applications.

Pallet Construction: Block vs. Stringer Matters More Than Material

When you’re thinking about pallets to be used in pallet racking, construction often matters just as much as the material used to make them. The biggest distinction in this arena is between stringer pallets and block pallets.

Stringer pallets use parallel runners to support the deck. They’re common and inexpensive, but they only offer two-way forklift entry unless modified. In racking, stringer pallets can concentrate weight at fewer contact points, which increases beam deflection and wear over time.

Block pallets use solid blocks at each corner and along the center, allowing true four-way entry. That design improves stability in the rack and helps distribute the load more evenly across the beams. Better contact means less stress on both the pallet and the racking.

The bottom deck design also plays a role. Full bottom boards or perimeter bases spread weight more effectively than pallets with little bottom support. This affects how well a pallet sits on rack beams or pallet supports.

Load, Deflection, and Time-in-Rack: The Hidden Risk Factors

Deflection is one of the most misunderstood — and overlooked — risks in pallet racking. Simply put, deflection is how much a pallet bends or sags when it’s loaded and resting on rack beams. All pallets deflect to some extent. The issue is how much, and for how long.

Pallets behave very differently in static storage than they do in fast-moving operations. A pallet that only sits in a rack for a few hours may never have time to noticeably sag. But when heavier loads remain in the rack for weeks or months, that bending increases and becomes permanent.

This is where problems often come up with certain plastic or lightweight composite pallets. While they may handle dynamic movement well, they can sag under static rack loads if they aren’t designed for beam-supported storage. 

Without wire decking, pallet supports, or a reinforced bottom deck, the load can shift, stress the beams, or become unstable.

Pallets behave very differently in static storage than they do in fast-moving operations. A pallet that only sits in a rack for a few hours may never have time to noticeably sag. But when heavier loads remain in the rack for weeks or months, that bending increases and becomes permanent.

Matching Pallets to Your Racking System

Different racking systems place very different demands on pallets. That’s why a “one-size-fits-all” approach often causes problems.

Selective pallet rack is the most forgiving. It works with most pallet types as long as the pallets are in good condition and sized correctly. Even here, consistency matters. Mixed pallet heights, damaged bottom boards, or uneven deck boards can lead to poor beam contact and increased deflection over time.

Drive-in and drive-thru rack are way less forgiving. Pallets ride directly on rails, so quality and dimensional consistency are key. Weak or damaged pallets are more likely to hang up, break, or drop. That increases both safety risks and rack damage.

Pushback and pallet flow systems require the highest pallet standards. These systems rely on smooth, predictable movement, which means strong bottom decks, uniform dimensions, and minimal deflection. Poor pallets can jam lanes or damage carts and rollers.

Finally, decking matters. Weaker pallets often require wire decking or pallet supports to spread loads safely. Stronger pallets may reduce that need — but only if the rack is designed accordingly.

Pallet Quality, Inspections, and Rack Safety

Not all pallets are created equal. And pallet condition has a direct impact on rack safety. 

Grade A pallets are generally clean, structurally sound, and consistent — the safest option for pallet racking. Grade B pallets may show wear but can still be serviceable if damage is minor and load limits are respected. Grade C pallets, with missing boards, cracks, or excessive repairs, should never be placed in racking.

That’s because damaged pallets increase the likelihood of uneven loading, beam deflection, and sudden failure during handling. They also raise your risk of forklift impacts and falling products, which can damage racks and endanger workers.

From a compliance standpoint, poor pallet quality often drives the need for additional decking, supports, repairs, or inspections. In many cases, those “extra” safety measures are required only because you didn’t address pallet condition early.

Pallets Aren’t an Afterthought. They’re Part of Your System.

Environmental and Operational Considerations

Environmental conditions and operating realities play a major role in pallet selection. Cold storage and freezer environments are hard on traditional wood pallets, which can absorb moisture, degrade faster, and splinter over time. Plastic or metal pallets often perform better in these settings due to their resistance to temperature and humidity extremes.

In food, pharmaceutical, or clean operations, hygiene matters. Plastic and composite pallets are easier to clean and don’t harbor contaminants the way damaged wood can. For export or one-way shipping, lightweight composite or low-cost wood pallets can make more sense, especially when pallets are not likely to return.

Operationally, there’s also a difference between pallets used in closed-loop, in-house systems and those sent outbound and lost. The “best” pallet depends on where it lives and where it’s going next.

Pallets are easy to overlook because they’re everywhere. But in a pallet rack system, they’re doing real structural work. The wrong pallet — or the right pallet used in the wrong way — can undermine even a well-designed rack system through deflection, damage, and safety risks over time.

When pallets, loads, and racking are matched intentionally, though, the result is safer storage, longer rack life, and smoother day-to-day operations. 

East Coast Storage Equipment helps warehouses evaluate pallet types, conditions, and load profiles, then design racking systems that support them properly. If you want confidence that your pallets are supporting — not compromising — your racking investment, contact ECSE to start the conversation. Call 888.294.5022 or reach out online.