How we Fixed it: Re-roofing the Castalia building in The Hague, Netherlands

摘要

This 104m high government building is home to the Netherlands' Ministry of Health, Welfare and Sport and is one of the tallest in The Hague, resembling a tower block capped by two very steeply-pitched triangular roofs. The metal composite roofs were leaking so badly that a new roof structure had to be built on top to make them watertight, but at 21 storeys up erecting scaffolding from the ground would have cost hundreds of thousands of pounds, and use of a cherry picker was impossible.