If the following component ‘1’ is met by the investor/Customer, and elements ‘2-5’ are met by the installing contractor, then the final surfacing should provide excellent in-situ performance, for years, and therefore providing you with a very good value for money investment when analysing its ‘Whole Life Cost.’
1. THE SUBSTRATE ITSELF TO WHICH THE HIGH-FRICTION ANTI-SKID AND COLOURED SURFACING IS BEING APPLIED
For long term performance and therefore a worthwhile investment, it is critical that the underlying substrate provided by the investor/Customer is fit for purpose i.e. it is in sound condition to support the new surfacing (we can offer advice on this and determine suitability when we conduct a site inspection with you).
2. THE PREP WORK RELATING TO THE GROUND/FLOOR SURFACE
All prep work must comply with the specific requirements as stated in the contractors’ Installation Method Statement (approved by the resin binder manufacturer). If the prep work is not conducted in a meticulous and detailed manner, and short cuts are taken, the finished surfacing can and often does fail, even if the materials are of the highest quality.
N.B. Colourgrip Surfacing Ltd. has an Installation Method Statement based on 18 years’ practical experience in every installation situation and surface.
3. THE RESIN BINDER APPLIED TO THE GROUND/FLOOR SURFACE
Should have a proven track record in the roading environment, to provide years of service in a residential environment.
Internationally-recognised highways agency body certification e.g. UK Highways Agency’s ‘British Board of Agrément’ (BBA) for performance as a high friction ‘anti-skid’ surfacing on highly trafficked state highways with a design life of 5-10 years.
N.B. Colourgrip®’s resin binder has BBA Certification since 1999.
Must provide excellent technical properties;
Strength, to support the weight and friction created from driveway vehicle traffic, without wearing down, expressed as Tensile Strength in Newtons per mm³. An acceptable laboratory test result would be at least 13.0 N/mm³.
N.B. Colourgrip®’s resin binder achieves 14.0 N/mm³.
Elasticity, to handle any underlying substrate movement (particularly asphalt), throughout its performance life, expressed as % Elongation At Break. An acceptable laboratory test result would be 45%.
N.B. Colourgrip®’s resin binder achieves 50%.
Guaranteed minimum resin thickness of 1.35kg/m2 This figure has been taken from the original British specification for the minimum specified by the UK Highways Agency for state highways (like our Transit/NZTA here) so they could be sure that the roading contractors were laying a more than acceptable depth of resin for the aggregate to embed well and hold firm. This can be confirmed by sighting the contractor’s Installation Quality Control Form, upon completion.
N.B. Colourgrip Surfacing Ltd. completes an IQC Form after every installation and provides a copy to their Customer for their own records Our spread rates are always higher than the 1.35kg/m2 promised minimum.
4. THE AGGREGATES APPLIED TO THE RESIN BINDER
All aggregates used within a residential environment for the purpose of anti-slip to aid traction for vehicles on steep driveways should be a calcined bauxite, in Pedestrian Grade. For sidepaths, patios, balconies and internal areas, rounded pebble aggregates in Pedestrian Grade are ideal, providing excellent anti-slip underfoot.
For anti-slip areas such as sidepaths, patios and balconies, the aggregate should consistently provide an acceptable skid-resistance value (SRV) under the British Pendulum Tester (BPN) or Floor Friction Tester (FFT), as specified within the NZ Dept. Of Building & Housing’s Compliance Document for NZ Building Code, Clause D1 Access Routes – Second edition. This states that all slip-resistant surfaces have;
– a mean coefficient of friction of not less than 0.4µ when tested by Floor Friction Tester (FFT)
N.B. Colourgrip® achieves >0.8µ
– a minimum of 54BPN to achieve a “Very low risk of slipping”
N.B. Colourgrip® achieves >71BPN
To ensure the aggregates used for vehicle anti-slip do not break down prematurely;
compliance with NZS4407:1991 Test 3:10 for crushing resistance, under a load of 230k/N produces less than 10.0% fines (as specified by the NZ Transport agency for high-friction anti-skid locations on state highways).
Each aggregate consignment should be traceable by batch number and be supported by place of origin test results confirming its chemistry and grading, along with PSV and AAV test certificates – all under ISO 9001 quality control.
5. THE CONTRACTING EXPERIENCE IN INSTALLATION WORK
Choosing a proven, quality anti-skid and/or textured anti-slip surfacing is a smart decision but worthless without commissioning the services of a highly experienced contracting outfit. There are so many pitfalls and temptations to cut corners so the Engineer’s choice is a really important decision.
Ensure the installing contractor has comprehensive experience laying coloured safety surfacing, successfully, and has the full support of the resin binder manufacturer as an approved installer of their material.
N.B. Colourgrip Surfacing Ltd.’s contracting team has more than 22 combined years’ experience installing resin binder and aggregate anti-skid and coloured surfacing systems internationally and all appropriate substrates.
The Colourgrip® Surfacing System meets, and in many instances well exceeds the above specifications.