Pothole & Trench Reinstatement


We produce a specially designed polymer bituminous emulsion mixture in COLAS, which is used for the manufacture of delayed-set macadam (Colpatch).


Colpatch is ideally suited for all road maintenance work such as pothole repair, trench re-instatement, re-filling core-holes and levelling depressions. It's also ideal for lightly trafficked areas

  • Colpatch is manufactured using a COLAS ContractingCold Mix plant where un-heated aggregate is added directly to the cold mix plant and coated with pothole patch emulsion.
  • This process greatly reduces greenhouse gas emissions as the aggregate is not heated as with a typical hot mix.
  • The emulsion is also applied at lower temperatures, between 50 and 60% less heat is required when compared to heating bitumen.
  • The aggregate grading by COLAS Contracting iswith a 2/6mm Gc 85/20 coarse aggregate as specified in Table 2 of IS EN 13043 aggregates for bituminous mixtures and surface treatments for roads, airfields and other trafficked areas.