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Surface treatments

In Types 0, 1 & 2 roads, where an existing surface treatment is readily apparent, the undertaker must reinstate the surface course with HRA as per S6.4.2 unless otherwise requested by the authority. In addition, the undertaker must apply an equivalent surface treatment if practicable and requested by the authority. Where requested by the authority, an appropriate timing and methodology for the works must be jointly agreed in accordance with national specifications and Codes of Practice (e.g. Road Note 39).
Unless otherwise requested by the authority, surface dressing or other surface treatment is not required in Types 3 & 4 roads when any binder course and surface course option permitted by S6.4 is laid. When requested by the authority, the surfacing layer and equivalent surface dressing or other surface treatment must be agreed in advance of the works.