In early 2009 CRL tendered for, and were awarded the contract to carry out the internal and external refurbishment of the Rusper and Betchworth Water Towers in Surrey for Sutton & East Surrey Water.
Both water towers were built in 1930 from conventionally reinforced concrete and although over the ensuing period both have stood up to the elements remarkably well, Sutton & East Surrey realized if they were to maximize their use, both internal and external upgrading was required.
Works began in May 2009 and started with the repair of any spalled and cracked concrete, including the roof parapets and the enclosed area beneath the bowl. The concrete surfaces were then thoroughly cleaned down and a fairing coat applied prior to the spray application of Sika’s Sikagard 550W Anti-Carbonation System.
The existing asphalt membrane covering the roof area above the bowl was repaired and cleaned down prior to Irathane’s Aqualine 400a being applied as the roof waterproof coating.
The internal works within the water bowls included the removal of the existing internal asphalt lining to the walls, floor and columns, repairs to any spalled and cracked concrete, cleaning down the surfaces, reprofiling where necessary and re-lining with Irathane’s Aqualine 650. The roof soffits and beams were surveyed, any spalled and cracked concrete repaired and a protective coating applied to all areas. To keep up with current Health & Safety requirements the existing wooden internal access staircase (which had been there since 1930!) was removed and replaced with a more ‘modern’ one, as well as the ladder from the bowl roof for access into the tank.