Anti-Skid Surfacings
Anti-skid surface treatments usually consist of high-friction calcined bauxite. Grit-sized, it is applied to surfaces in one of two ways, either in a hot thermoplastic resin screed, or as a dressing on two-part epoxy or polyurethane adhesive resin coatings.
Application can be either by hand or by machine. Thermoplastic materials are normally hand-screeded. Either Chinese (buff coloured) or Guyanan (mid to dark grey) bauxite can be used. (Other types of high PSV aggregates can be used, but these are usually selected for colour and are generally used in other applications. See Traffic Calming and Decorative Surfacing sections for details).
Northstone is the sole agent in Ireland for Prismo's anti-skid surface treatments. Prismo's products have been developed for use on safety-sensitive, high-stress sites, such as busy junctions, sharp bends, roundabout approaches, pedestrian crossings and accident black spots. They are also used for surfacing pedestrian footbridge decks, approach ramps and stair treads.
Zebraflex® Type 1
A highly durable skid-resistant surface treatment incorporating a premium grade thermoplastic resin binder and 100% high PSV calcined bauxite aggregate. (Chinese or Guyanan grades available). It is hand applied to provide a 3-5mm thick anti-skid surface (SRV 70 minimum). Also available in red, green and yellow. Zebraflex Type 1 was the first thermoplastic material to obtain a Type 1 BBA/HAPAS* Roads and Bridges High Friction Surfacing System Certificate (No. 00/H043).
*British Board of Agrément/Highways Authority Product Approval Scheme
Tyregrip 924® Anti Skid / Decorative Surfacing
A hand-applied anti-skid treatment conforming to the Specification for Highway Works, Clause 924 for Resin Based High Skid Resistant Surface Treatments. The system comprises a two-component modified epoxy binder and a graded 1-3mm calcined bauxite aggregate. It can be readily applied to asphalt, macadam and concrete (concrete must be primed). Installation of the system should only be carried out when the road surface temperature is between 5 to 35°C. The system is BBA/HAPAS approved, Certificate No. 05/H115 - Type 1 classification. The Tyregrip resin may also be pigmented and dressed with natural or pigmented aggregates to provide a decorative stone finish with good slip resistant properties (see Decorative Surfacing section for full details).
Suregrip®
A two-component hand or machine applied anti-skid surface treatment to SHW Clause 924, dressed with calcined bauxite aggregate. The binder is a bitumen-extended epoxy resin which is applied at road surface temperatures of 5 to 35°C. The system is BBA/HAPAS approved, Certificate No. 98/H002 - Type 1 classification.
