
For a century or so from the 1820s corrugated iron was a very important building material for all sorts of purposes with all the advantages of pre-fabrication and portability - it was not unusual for CI buildings to be transported to new sites, sometimes, indeed, without being disassembled. They were still widespread on farms, for example, into the 1960s. But, often despised as temporary and inferior, most have now been lost.
At least St Fillan's, listed as Category C, should now be secure for some time to come.