Anti-Slip Treatment Verification Testing

How anti-slip treatments work

Common treatments fall into a few categories:

• Chemical etching — acidic or fluoride-based treatments that micro-roughen polished stone or porcelain. Visual finish broadly preserved; PTV uplift typically 10–25 points wet.
• Applied coatings — clear or coloured coatings with embedded grit aggregate. Visual finish noticeably altered; PTV uplift can be substantial but coating durability varies.
• Mechanical re-finishing — diamond grinding or shot-blasting to expose new aggregate. Common on concrete and resin floors. PTV uplift can be the largest of any treatment.
• Anti-slip tape and matting — physical addition of high-friction surface; suitable for transitions and stair nosings.

Why independent verification matters

Treatment providers will quote a typical or expected PTV uplift, but actual uplift on a specific surface depends on the substrate condition, the application technique, the cleaning regime that follows, and the curing conditions. Independent UKAS-accredited testing measures what was actually achieved on this floor, not what was achieved on the manufacturer's reference samples.

The before-and-after methodology

• Before — pendulum testing across the zones to be treated, recording PTV wet and dry, with photographic record of the surface condition
• Treatment carried out — by the treatment provider, to their specification
• Cure period — typically 7–14 days, depending on treatment chemistry
• After — repeat pendulum testing at the same locations using the same methodology, recording the post-treatment PTV
• Report — comparative analysis showing the uplift achieved at each test location

Durability — the second test

Initial post-treatment PTV is one piece of evidence. Durability of the uplift is another. For demanding environments, follow-up testing at 6 and 12 months captures whether the treatment is holding or whether traffic and cleaning have eroded the gain. Some treatments achieve a strong initial uplift that decays substantially in the first year; others are more durable.

When treatment is the right choice

Treatment is most appropriate where the substrate is intact and visually acceptable, the slip-resistance shortfall is moderate (PTV gap of 5–25 points), and the operating environment is not so aggressive that the treatment will be quickly lost. For severely worn, mechanically damaged or fundamentally mis-specified floors, replacement is often a better path.