Eastern Road Bridge, UK

Fosroc specialist solutions used on a major water bridge that suffered erosion due to the coastal environment.


The Eastern Road water bridge is a major route into Portsmouth. As part of the new coastal defence scheme along the north of Portsea Island, repairs were required to the abutments which had suffered erosion due to the coastal environment. The re-facing of the abutments, which was essential to ensure that the bridge remained structurally sound, needed to be carried out within a specific time frame due to the tidal location of the bridge.


A dry spray repair mortar was required for this project due to the large area of embankment that was to be repaired and protected. Renderoc DSR was chosen for the tidal areas due to its fast curing properties, early strength gain and low rebound.

In other areas where fast curing was not crucial, Renderoc DS was used. Both materials are applied by dry spay methods, and are specially designed for large repair areas and for enlarging or strengthening existing retaining walls or tunnel structures. They also both meet the requirements of the Highways Agency Specification and EN1504.


This was a “quick start” job and members of Fosroc's technical, operations, supply chain and customer services teams worked closely together to ensure that the contractor had material readily available, delivering it exactly when required.

The rapid setting time of Renderoc DSR, and the fact that there is very little rebound resulted in improved productivity, reduced wastage and no contamination of the coastal water.

The contracts manager of Gunform International Limited commented: "The material performed excellently and produced a first class job. We would certainly have no hesitation in using the products again and in recommending them to clients in the future".

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