Graphical Construction Glossary >> Roofs and roofing. >> Roof Coverings >> corrugated iron
The shot above shows a roofer fixing modern corrugated sheeting. It is not wrought iron any more but coated steel. The coating as an alloy of zinc and aluminium. The main patent holder world wide is the US "Galvalume" company with various subsidiaries around the world. The Australian BHP company calls it "Zincalume".
For more details on steel roofing products try this page.
For more details on galvanised iron try this one.
I doubt if there are many original wrought iron sheets left, but it is still possible to get the genuine galvanised on steel product. It just costs more. This is from a recent heritage project.
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