Derbyshire Aggregates
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Thermoplastic and Anti Skid Process – Information

Anti Skid process

There are two processes employed to produce skid resistant (high friction) surfaces for sites with known skidding and braking problems.

Both processes use Calcined Bauxite or high PSV (Polished Stone Value) granites and gritstones. Calcined bauxite is an extremely hard aggregate and retains the “sharp” edges and facets produced at the time of crushing for the life of the surface. This unique property greatly enhances the skid resistant properties of these surfaces over the use of natural aggregates.

However one process uses a thermoplastic resin, i.e. when it is hot it is liquid and can be screeded on to the road surface along with an aggregate contained within the resin mixture.

The second process uses a thermosetting binder, which is produced by mixing separate resin components  prior to laying, and the separate aggregate is applied to the resin before it begins to set.

The two processes are:

  • Hot Applied Skid Resistant / High Friction Surfacing
  • Cold Applied Skid Resistant / High Friction Surfacing



Cold applied screeded lane markings