Roofs are exposed to very harsh weather conditions over many years. To avoid corrosion and guarantee the longevity of steel sheet roofing, the coating of the steel must be of the highest quality. The coating structure is typically built up of three layers of lacquer over a basic zinc coating.
Poll: Should the UK’s railways be renationalised?
The term innovation is bandied about in relation to rail almost as a mantra. Everything has to be innovative. There is precious little evidence of...