Introduction:
PumaGrip Type 1 High-Friction Surfacing System is a thermosetting high-friction surfacing solution designed to significantly improve road safety by enhancing skid resistance in both wet and dry conditions. This system, which includes a polyurethane-modified methyl methacrylate (MMA) binder, blended fillers, BPO hardener powder, and calcined bauxite aggregate, is widely used in high-stress areas such as sharp bends, junctions, and motorway slip roads. Recognised for its durability and rapid curing
properties, PumaGrip Type 1 plays a crucial role in reducing accidents and ensuring safer roadways
The Challenge:
Working on behalf of A-One+ for Highways England, the project involved the application of PumaGrip Type 1 on lay-bys along the M1 (North) and across the M62 during the challenging weather period from September to March. According to the original specification from Highways England, the project required the application of PumaGrip Type 1 followed by the PumaCoat Surfacing System, a UV-stable, orange-coloured finish that enhances both visibility and surface durability. However, the installation of these systems is highly dependent on weather conditions, requiring specific temperature ranges, dry conditions, and controlled humidity levels. These requirements posed significant challenges, as the variable weather during this timeframe led to delays and substantial costs due to standdown shifts.
The Solution:
In response to these challenges, the Jointline team devised an innovative solution that enabled the project to proceed without compromising the quality or safety of the surfacing. Recognising the limitations of the cold-applied system under the prevailing weather conditions, the team proposed the use of a standard hot-applied buff system compliant with Clause 924 as the base layer. This system was less susceptible to weather conditions and allowed work to continue despite adverse weather. Once the hot-applied system had cooled, the PumaCoat system was applied on top, ensuring the required surface characteristics were achieved. This approach was trialled successfully on a single lay-by, and following its success, a departure from the original specification was approved, allowing this method to be used across all the remaining lay-bys.
The Benefits:
The innovative approach developed by the Jointline team provided several key benefits. By using a hotapplied system, the project was able to continue in less-than-ideal weather conditions, avoiding further costly delays. The subsequent application of the PumaCoat system ensured that the surfaces maintained their high friction and UV-resistant properties, which are critical for road safety. Moreover, the durability and aesthetic quality of the surfacing were preserved, as demonstrated by the continued brightness and functionality of the lay-bys on the M1 and M62. This solution not only met the technical requirements of the project but also offered a practical and costeffective method for overcoming weather-related challenges in road surfacing.
