How is Surface Dressing laid?

The surface dressing process involves the application of a veneer of bitumen followed by a coating of loose chippings that are rolled into the bitumen. Loose chippings are swept away after 24 hours and again after 48 hours and seven days. The process is completed quickly, and traffic can use the road immediately under reduced speed limits put in place to protect road workers and reduce the risk of damage from loose chippings. Surface dressing is normally carried out during the summer months as the bitumen veneer adheres best to a dry surface.


What benefit do road users see?

Surface dressing is quick to apply and often requires only temporary road closures. It is ready for traffic to travel on the new surface immediately, reducing delays to road users as only temporary road closures are required. The surface is normally used for arterial routes and rural carriageways. It creates a seal, preventing water from penetrating the road surface, prolonging the life of the road.


What should I do when the works are taking place?

During the operations, please ensure that your vehicles are not parked on the highway as the operations will require full access at all times to the road. ‘No Parking’ signs will be erected throughout sites to advise residents of the times when vehicles should be removed. Please do not walk on the freshly laid materials, because it may stick to your shoes and can be transferred to carpets, wooden floors, etc. Please observe the traffic control measures that are in place at all times and do not drive on the wet bituminous surface at anytime. Areas that have significant parking throughout the day, will be required to move vehicles up to periods of seven days after the application to ensure that all of the excessive aggregate has been removed by mechanical sweeping.