The UK’s independent authority on slip resistance


  • What Does The Law Require In The UK In Terms Of Slip Resistance?

    There are various regulations that apply to different premises, and different activities, but essentially they all require that the floor is not slippery in normal use. None of the regulations define the level of slip resistance required, or the test protocols that should be followed.

  • Does A Flooring Material Have An Absolute Value Of Slip Resistance?

    No, the level of slip resistance will also depend on the shoe material in contact with it, and any contamination that may be present between the two. For specification purposes, the shoe material and the test conditions are defined, allowing one material to be compared with another

  • Do Different Standards Apply To Different Flooring Materials?

    Yes, there are lots of standards for flooring materials. However, using the UKSRG guidelines will help you understand the slip potential of any flooring material. You may want to assess flooring in this way in addition to any flooring-specific standards. The guidelines will also assist you in considering the effects of cleaning, wear and use of the area into which the flooring will be installed.

  • Who Can Test The Slip Resistance Of My Flooring?

    We suggest visiting the members page on this web site, where you can filter the membership by types of activity. If you have a question which is not answered below please email

  • Do I Need Training To Use The Pendulum?

    We would recommend that any new user undertake some training with an experienced operator.

  • Where Can I Hire A Pendulum Tester?

    You can hire the pendulum from BSI Calibration in Hemel Hempstead. However, using the pendulum tester is not easy without training, so this may be a time consuming exercise that could easily result in mis-leading data. We would suggest contracting an expert user, such as a UKSRG member.

  • Can I Make Decking Less Slippery When It Is Wet?

    Yes. The surface of the deck needs to be kept clean and clear of mildew and algal growth. The Timber Decking and Cladding Association provides guidance on how and when to clean you deck at Anti-slip decking products can also be fitted retrospectively, the TDCA can help you locate suitable suppliers. Decking products are available with anti-slip inclusions, which would avoid the problem.

  • Can I Increase The Slip Resistance Of Shiny Flooring Without Changing Its Appearance?

    The slip resistance in wet conditions is related to the surface texture of the flooring. Acid etching treatments will increase slip resistance but make surfaces rougher and less shiny. Alternative, water-based slip resistance treatments are, however, available which have little or no effect on a floor’s appearance.

  • Can Manhole Covers & Other Profiled Surfaces Be Pendulum Tested?

    Yes, in relation to pedestrian safety, we suggest referring to the profiled flooring section in the UKSRG guidelines.

  • Can You Test The Slip Resistance Of Footwear?

    The Health & Safety Laboratory (HSL) and the Shoe and Allied Trades Research Association (SATRA) routinely undertake footwear slip testing, though they do not use the same methodology. HSL tend to use a ramp based methodology developed from the EN & DIN flooring standards, whereas SATRA use a mechanical test they have developed, and which is used in the EN safety footwear standard. The UKSRG has yet to form a view on which test method is the most appropriate

  • Do You Have Test Results Available For Specific Products?

    No, the UKSRG does not hold such information. Individual members may have experience of particular products. Some information on generic level of slip resistance for different materials are available in “Safer surfaces to walk on – reducing the risk of slipping” published by CIRIA.

  • What Level Of Slip Resistance Is Required In School Corridors And Class Rooms?

    The slip resistance required is dependent on the use of an area. The basic conditions in the guidelines are based on a biomechanical study of working age men walking at a normal pace. Where people are likely to run, they may need a higher level of slip resistance. You also need to consider the likelihood of the area becoming wet in normal use, for example a laboratory or workshop may need to be slip resistant when wet, whereas a typical class room would normally be dry.

  • How Do UKSRG Guidelines Relate To Vehicular Traffic In Car Parks?

    The UKSRG focuses on pedestrian safety, which does not extend to the slip resistance required by vehicles. For the pedestrians using the car park, the UKSRG Guidelines should be used to assess the slip potential, in the same way as they are used for any other pedestrian areas.

  • How Do You Measure Slip Resistance In Barefoot Situations?

    The UKSRG guidelines cover the use of the pendulum for barefoot areas. The guidelines detail a secondary rubber slider which is used to assess barefoot slip potential in wet conditions. The use of Rz microroughness measurements to supplement pendulum measurements is equally valid for barefoot situations. There are two standards for barefoot testing, but both are laboratory based, and so can not be used to assess installed flooring.

  • Where Can I Hire A Surface Roughness Meter?

    We are not aware of anyone offering a hire service for roughness meters.

  • What Does The Law Require Outside Of The UK In Terms Of Slip Resistance?

    This group is primarily concerned with the UK, and as such we are not aware of the detail of the law in other countries. We do have a number of international members, who may be able to help in their own regions.

  • Can I Have My Pendulum Calibrated Outside The UK?

    Yes, we’d advise that you look for a lab with suitable certification for performing the calibration.

  • How regularly should testing be conducted in a floor?

    At least annually.

    Floors failing to achieve the required 36+PTV in the conditions of end use should be reassessed immediately after improvements have been made. There is no value in building up a record of a noncompliant surface over time.

    Floors achieving 36+PTV in the conditions of end use should be retested regularly but the period between tests should be determined based on factors such as the PTV achieved, variations across the surface, flooring type, traffic and recontamination rates and previous recorded PTV’s.

    There is no hard guidance on periods between testing, ultimately a constant record of compliant surfaces is the aim. Surfaces subject to varying contamination and cleaning regimes are more likely to generate varying slip resistances and so warrant a more frequent assessment.

    It should be noted that the slip resistance of a surface will, in most cases, inevitably change over time, even if that surface has been subject to an anti-slip treatment. Wet slip resistance depends heavily on the roughness of both the macro and micro profile. Macro profile edges wear over time, reducing the effectiveness with which they cut through a lubricating film and into the shoe sole. Micro profiles are subject to wear, but also become clogged with dirt and/or cleaning residues over time, smoothing the surface and reducing the effective dispersal of a lubricating film. The best way to combat losses in slip resistance are with an effective cleaning regime.

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