Lead flashing on roofs, brass or copper on domes, lead windows, wrought iron gates, structural cast-iron buildings – these are some of the uses of metals in buildings. And metals decay. This workshop looks at the historical background of ferrous and non-ferrous metals, their methods of production, the reasons for their decay and the appropriate conservation techniques for lead, wrought and cast iron. Students will get a feel for wrought-iron repair by trying their hand at forge welding. We will be making pot hooks, nails and pokers.