Industry guide

Warehouse Floor Slip Testing

Warehouse and distribution-centre floors are typically resin-bound concrete or sealed power-floated concrete, specified for flatness (FM2, FM3) and abrasion resistance more than for slip resistance. But the same surfaces support pedestrian movement — pickers, dispatchers, drivers — and slip risk emerges where forklift wear, dust, and occasional water ingress alter the surface in service.

Warehouse zones with distinct slip profiles

Loading bays and dock levellers — rainwater ingress, diesel residue from MHE
Picker walkways — high-foot-traffic corridors between racking
Forklift turning circles — tyre-rubber polishing wears the surface texture
Battery charging stations — potential acid spillage
Dispatch and inspection benches — concentrated foot traffic on smaller area
Office-to-warehouse transitions — carpet-to-resin doorway thresholds

FM ratings vs PTV

Warehouse floor specifications often quote 'FM' classifications — FM2 (general use), FM3 (high-traffic) under TR34. These describe surface flatness, not slip resistance. A perfectly FM3-compliant floor can still PTV-fail wet if the surface specification did not include a minimum slip-resistance threshold. Specifications drafted by procurement teams sometimes omit slip resistance entirely, which becomes a problem when a slip claim is later brought.

Forklift tyre polishing

One of the most reliable findings in periodic warehouse testing is reduced PTV in zones where forklifts pivot or turn at speed — particularly the 90-degree turn at the end of an aisle and the dock-leveller approach. The tyre-rubber action across years of operation polishes the resin surface, reducing wet-PTV by 5–10 points compared with adjacent untouched areas.

Last-mile and 3PL operations

Third-party logistics (3PL) operators often inherit floor surfaces from previous tenants and may not have any documentation of slip testing at handover. Where 3PL contracts include slip-claim indemnities, baseline pendulum testing on take-on protects the operator. Where claims arise mid-contract, the absence of baseline data shifts evidential burden unfavourably.

Distribution centre handover

For new-build distribution-centre handovers, BS 8204 may apply to the office and welfare areas while the main warehouse uses a different concrete-floor specification. Pendulum testing the office and circulation areas to BS 8204, plus specific zones in the warehouse main floor, provides comprehensive handover evidence. BS 8204 handover testing.