SIST EN 14231:2003

• Abstract:

  This European Standard specifies a test method to determine the slip resistance value of the surface of the exposed face of natural stone elements intended to be used for flooring in buildings.; NOTE 1 If the surface of the exposed face has a roughness measured according to prEN 13373 higher than 1 mm it will be considered as not slippery, without performing the test.; NOTE 2 This method can be used for laboratory measurements or on floors in service.

• Status: Published
• Publication Date: 31-Oct-2003
• ICS: 73.020 - Mining and quarrying
• ICS: 91.100.15 - Mineral materials and products
• Technical Committee: KAM - Natural stone
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Nov-2003
• Due Date: 01-Nov-2003
• Completion Date: 01-Nov-2003
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Directive:

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  89/106/EEC - Construction products
• Mandate: M/119 - Mandate to CEN/CENELEC concerning the execution of standardization work for harmonized standards on floorings
• Ref Project: EN 14231:2003 - Natural stone test methods - Determination of the slip resistance by means of the pendulum tester

• Refers: SIST EN 12676-1:2002 - Anti-glare systems for roads - Part 1: Performance and characteristics
• Effective Date: 28-Jan-2026
• Refers: SIST EN ISO 6149-2:2007 - Connections for hydraulic fluid power and general use - Ports and stud ends with ISO 261 metric threads and O-ring sealing - Part 2: Dimensions, design, test methods and requirements for heavy-duty (S series) stud ends (ISO 6149-2:2006)
• Effective Date: 28-Jan-2026
• Refers: SIST EN 596:1996 - Timber structures - Test methods - Soft body impact test of timber framed walls
• Effective Date: 28-Jan-2026
• Referred By: SIST-TS CEN/TS 15366:2010 - Winter and road service area maintenance equipment - Solid absorbents intended for road usage
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 12058:2004 - Natural stone products - Slabs for floors and stairs - Requirements
• Effective Date: 28-Jan-2026
• Referred By: SIST-TS CEN/TS 16811-3:2016 - Winter service equipment and products - De-icing agents - Part 3: Other solid and liquid de-icing agents - Requirements and test methods
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 15564:2009 - Precast concrete products - Resin bound concrete - Requirements and test methods
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 15285:2008 - Agglomerated stone - Modular tiles for flooring and stairs (internal and external)
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 12057:2004 - Natural stone products - Modular tiles - Requirements
• Effective Date: 28-Jan-2026

SIST EN 14231:2003 is the Slovenian adoption of EN 14231:2003, issued by SIST, for measuring the slip resistance of natural stone surfaces with a pendulum tester. It specifies a test method for the exposed face of natural stone elements intended for flooring in buildings, and it can be used both on laboratory specimens and on floors already in service.

What does SIST EN 14231:2003 specify?

SIST EN 14231:2003 specifies one test method for determining the slip resistance value of natural stone floor surfaces by means of a pendulum friction tester. The standard is organized into clauses 1 to 10, covering scope, references, principle, terms, apparatus, materials, specimen preparation, test procedure, expression of results, and test report, plus one normative annex for calibration.

Part	What it covers
Annex A	Calibration of the pendulum friction tester

The scope note says that a surface with roughness measured according to prEN 13373 higher than 1 mm is treated as not slippery without running the pendulum test. In practice, that gives a quick decision path for very rough stone finishes.

What are the key requirements of SIST EN 14231:2003?

SIST EN 14231:2003 centers on a standard pendulum swing with a spring-loaded rubber slider. The loss of swing length is converted into a slip resistance value, so users need a correctly set tester, the right slider, and consistent dry and wet procedures.

• Clause 3, principle - The tester uses a standard rubber slider on a pendulum arm, and the friction between the slider and the stone surface is read from the reduction in swing. This matters because the result is based on a controlled contact, not a subjective feel for slipperiness.

• Clause 5, apparatus - The tester, pointer, scales, sliders, and support must meet the stated construction and dimensional requirements, and the apparatus must be recalibrated at least annually. In practice, laboratories need the correct wide or narrow slider and a stable, calibrated instrument to make results comparable.

• Clause 5, slider condition - The rubber slider has specified resilience and hardness limits, must be clean and uncontaminated, must be conditioned before use, and is discarded when the striking edge becomes too wide or damaged. This matters because slider wear directly changes the measured slip resistance.

• Clause 7, specimens and sampling - At least six representative specimens or six representative floor areas are selected. A larger test area uses the 76 mm slider and the C scale, while a smaller area uses the 31.8 mm slider and the F scale. In practice, the specimen size determines which slider and scale can be used.

• Clause 8, test procedure - The method requires temperature control for laboratory tests, cleaning and wetting for service-floor tests, repeated swings until five readings are stable, and checks for zero drift. The specimen or tester is then turned through 180 degrees and tested again, which helps reduce directional bias.

• Clause 8, wet testing - For wet conditions, laboratory specimens are immersed before testing and the surface and slider are wetted before each swing. That gives a separate wet-slip result, which is important for locations exposed to water.

• Clause 9, results - Results are reported as SRV dry and SRV wet, based on the mean values from six specimens or test areas, with a temperature correction for service-floor measurements. This gives a single figure for dry and wet performance that can be used in specification or acceptance work.

• Clause 10 and Annex A - The report has a defined content list, and Annex A sets out calibration steps for weighing, balancing, spring tension, and pointer stop. That supports traceable testing and documented laboratory practice.

What terms does SIST EN 14231:2003 define?

• Slip resistance - The ability of a floor surface to keep pedestrian footwear from losing adhesion, reducing the risk of a slip.
• Friction - The resistance to relative motion between the slider and the stone surface, or between footwear and a trafficked surface.
• Slip resistance value (SRV) - The standardized pendulum result reported by this method for dry or wet conditions.
• Pendulum friction tester - The test device with the rubber slider, pendulum arm, scale, and pointer used to measure the swing reduction.
• C scale - The scale used with the 76 mm slider and the larger test area.
• F scale - The scale used with the 31.8 mm slider and the smaller test area.

Who uses SIST EN 14231:2003?

SIST EN 14231:2003 is used by test laboratories, stone producers, flooring suppliers, specifiers, and quality teams that need a repeatable slip-resistance result for natural stone flooring. It is also useful for checking existing floors in service, for product comparison, and for documenting surface finish performance before acceptance or use.

What changed in SIST EN 14231:2003 from the previous edition?

SIST EN 14231:2003 is presented as EN 14231:2003, and the foreword states that no existing European Standard is superseded.

Which standards are used with SIST EN 14231:2003?

• ISO 48 - Supports hardness testing of the rubber materials used in the slider.
• ISO 4662 - Supports rebound resilience testing of the slider rubber.
• ISO 7619 - Supports indentation hardness checking for the slider rubber.
• prEN 13373 - Is used in the scope note for the roughness check that can exempt very rough surfaces from testing.

What does the SIST EN 14231:2003 document contain?

The standard includes a figure of the pendulum friction tester, a sliding-length gauge, and an illustrated slider assembly. It also gives the test procedure for dry and wet conditions, the calculation method for SRV dry and SRV wet, and the required contents of the test report.

Annex A provides a practical calibration procedure covering component weighing, arm balancing, spring tension setting, and pointer stop adjustment. The body of the standard also includes a temperature-correction graph for service-floor measurements and the stability checks used during repeated swings.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Preskušanje naravnega kamna – Ugotavljanje odpornosti proti zdrsu – metoda z nihalomPrüfverfahren für Naturstein - Bestimmung des Gleitwiderstandes mit Hilfe des PendelprüfgerätesMéthodes d'essai pour les pierres naturelles - Détermination de la résistance a la glissance au moyen du pendule de frottementNatural stone test methods - Determination of the slip resistance by means of the pendulum tester91.100.15Mineralni materiali in izdelkiMineral materials and products73.020Rudarstvo in kamnolomsko izkopavanjeMining and quarryingICS:Ta slovenski standard je istoveten z:EN 14231:2003SIST EN 14231:2003en01-november-2003SIST EN 14231:2003SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14231April 2003ICS 73.020; 91.100.15English versionNatural stone test methods - Determination of the slip resistanceby means of the pendulum testerMéthodes d'essai pour les pierres naturelles -Détermination de la résistance à la glissance au moyen dupendule de frottementPrüfverfahren für Naturstein - Bestimmung desGleitwiderstandes mit Hilfe des PendelprüfgerätesThis European Standard was approved by CEN on 26 May 2002.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2003 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14231:2003 ESIST EN 14231:2003
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