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SKU Proliferation: A Silent Threat to Refractory Profitability

By Glazix | May 29, 2025

When every customer request becomes a product, you’re not growing—you’re leaking profit.

Refractory distributors walk a fine line. You want to be responsive. You want to say “yes” when a steel mill asks for a specific dense brick or when a foundry needs a low-cement castable with unique chemistry. But too often, this flexibility comes at a cost: SKU proliferation.

SKU proliferation occurs when product variety expands unchecked, often without alignment to demand, margin, or operational feasibility. In the refractory business—where margins are tight and storage costs are high—it’s not just an inconvenience. It’s a profit killer.

How It Happens:

A customer requests a unique gunning mix—so you add it to the catalog.

Another asks for a slightly different brick shape—now it’s a new line item.

A third wants a special packaging size—hello, new SKU.

Individually, these decisions seem logical. Cumulatively, they lead to:

Overstocked warehouses with low-turn materials

Higher cycle count and pick complexity

Diluted purchasing power across suppliers

Shrinking margins due to fragmented demand

A Real-World Example:

A Calgary-based refractory distributor conducted a catalog audit and found they had over 2,000 active SKUs—many representing slight formulation tweaks or packaging variations. Less than 300 SKUs accounted for 82% of revenue. Worse, nearly 500 SKUs had not been sold in over 18 months, yet continued to occupy warehouse racking.

By consolidating formulations (grouping 8 alumina-silicate mixes into 3 performance tiers) and moving infrequent shapes to custom-order status, they reduced active SKUs by 28%. This freed up significant warehouse space and allowed them to negotiate better MOQs with core suppliers.

How to Control SKU Proliferation:

Define Clear SKU Creation Rules

Any new SKU request must be tied to minimum annual volume, margin target, and multi-customer applicability.

Introduce Tiered Cataloging

Tier 1: Core SKUs (stocked, high-volume)

Tier 2: Strategic specialties (limited stock, review quarterly)

Tier 3: Tactical/custom SKUs (make-to-order only)

Use Data to Drive SKU Retirement

If a SKU hasn’t sold in 12–18 months, flag it for retirement or conversion to on-demand status.

Bundle with Commercial Strategy

Offer incentives to customers for consolidating orders around standard SKUs. Explain lead times or price premiums for off-catalog items.

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SKU proliferation is slow and often invisible—but its impact is measurable. For refractory distributors, the antidote is clarity: know which products belong, which don’t, and which should never have existed in the first place. Because in a business where every pallet counts, fewer SKUs often mean more profit.


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