Home / The tests
Method & accreditation
Two readings, one clear answer
Grip cannot be judged by eye, so we take it two complementary ways — and we are accredited for both.
The pendulum reading
The texture reading
The pendulum
Grip is measured first with the pendulum. A weighted arm sweeps a rubber slider across the floor, standing in for a heel that loses its hold, and sets the result down as a Pendulum Test Value. We take it wet as well as dry, in three directions; a reading of 36 or more falls in the low-risk band, which the HSE treats as the line to clear.
Reading the texture
The surface texture is the second measure. Where floors meet rain, spills or grease, the fine roughness — recorded in microns — gives moisture somewhere to go, so the surface keeps its grip. It complements the pendulum rather than replacing it, and over time it reveals a floor wearing smooth before it becomes a hazard.
The standards
- BS 7976-2 — the operation of the pendulum tester.
- BS EN 16165 — the current standard for measuring surface slip resistance (it superseded BS EN 13036-4).
- UKSRG guidelines — how the results are interpreted (we are a member).
Whoever is responsible for a building holds the duty — employers, facilities managers, and in care settings the Care Inspectorate, which expects slip risk to be assessed and managed across Scotland.
Independent, and accredited
Surface Performance fits nothing and sells nothing — no connection to any flooring manufacturer, treatment company or equipment maker, and no commission from anyone. UKAS-accredited (UKAS Testing Laboratory No. 7933, ISO/IEC 17025), and recognised by RoSPA, FIFA, World Rugby, the ITF and FIH for related work. Nothing influences the figure.
Laboratory product testing
Beyond site work, our environmentally controlled laboratory (to ISO 291) examines more than 300 flooring products a year — tile, stone, resin, vinyl and decking — and can issue slip-resistance certification or support product development.
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Surface, rough size, where you are across Edinburgh or the Lothians — that is all we need to send a fixed quote.