The purposes of surface dressing are to waterproof the road surface, to delay disintegration, to provide texture, and provide a skid-resistant surface.
Unfortunately surface dressing is not popular with road users, this is mainly because of the loose chippings which are an inevitable part of this process. However the speed of the surface dressing operation and the short duration of time during which motorists are inconvenienced is also an important benefit as to its use.
We undertake surface dressing because it:
Surface dressing work is undertaken between mid-March and finishes by the end of August each year. This is because the process requires warm dry weather to make sure the dressing becomes established.
Sweep the road to remove any loose material and cover all gullies and manhole covers
Spray the road with bitumen binder and then cover with a layer of loose stone chippings. Initially the chippings are held in place by the fresh bitumen.
Press the new chippings into the bitumen by a roller; however, they will only become fully embedded under the action of vehicle tyres.
Traffic is allowed onto the new surface, at a reduced speed, to help to push the chippings into the road. The action of traffic soon begins to embed the chips, forming a stable and hard wearing new surface.
Excess chippings will be removed by the contractor during the days immediately after completion of the surface dressing works.
14 days after the surfacing works the contractor will give the road a final sweep and repaint all the lines.
Loose chippings may initially be a problem and this is why there is a speed limit of 20mph during the early life of the dressing. It is important that when driving you keep to the temporary speed limits and avoid sharp turns, this will: