History. The oldest surviving examples of sash windows were installed in England in the 1670s, for example at Ham House. The invention of the sash window is sometimes credited, without conclusive evidence, to Robert Hooke. Others see the sash window as a Dutch invention.

What era are sash windows?

No one knows for sure who invented sash windows, or precisely when. General consensus amongst historians is that they most probably originated in Holland or France during the 17th century, and from there spread to the UK.

When did sash windows become popular?

Sash windows were very popular in England during the Georgian period (1714 to 1837) and during the Victorian period (1837 to 1901). More recently, they were also an important feature of Edwardian suburban houses.