In article ,
Lobster writes:
Somebody correct me if I'm wrong, but did the Edwardians build houses
with cavity walls? Or are there other applications for wall ties?

Even the Victorians did. They start in around 1880 I think,
but only in wet windswept coastal areas initially. They
gradually work their way across the country, and are
probably in all the new housing stock around the 1930's.

--
Andrew Gabriel