There is no evidence that the Anglo Saxons had developed corrugated iron for roofing purposes.
Well this pommy bastard did!!! LONDON DOCK COMPANY you twaddler!!!
"CGI was invented in the 1820s in Britain by
Henry Robinson Palmer, architect and engineer to the London Dock Company. It was originally made from
wrought iron. It proved to be light, strong,
corrosion-resistant, and easily transported, and particularly lent itself to prefabricated structures and improvisation by semi-skilled workers. It soon became a common construction material in rural areas in the United States, Chile, New Zealand and Australia and later India, and in Australia and Chile also became (and remains) a common
roofing material even in urban areas. In Australia and New Zealand particularly it has become part of the cultural identity,
[1][2][3] and fashionable architectural use has become common.
[4] CGI is also widely used as building material in African slums and informal settlements.
For roofing purposes, the sheets are laid somewhat like tiles, with a lateral overlap of one and half corrugations, and a vertical overlap of about 150 millimetres (5.9 in), to provide for waterproofing. CGI is also a common construction material for industrial buildings throughout the world.
Wrought iron CGI was gradually replaced by
mild steel from around the 1890s, and iron CGI is no longer obtainable, but the common name has not been changed. Galvanised sheets with simple corrugations are also being gradually displaced by 55% Al-Zn coated steel
[5] or
coil-painted sheets with complex profiles. CGI remains common."
Kilburn 1863
OK; a bit after 1066 but still pommy bastards.
Greg