Why do windows in the UK open outwards?

The long-running series in which readers answer other readers’ questions on subjects ranging from trivial flights of fancy to profound scientific and philosophical concepts
  
  

A tabby cat entering a home through an ajar window
Don’t mind if I do … Photograph: Catherine Falls Commercial/Getty Images

I have lived in many countries where the windows open inwards. Not only are they easy to clean (at any storey level), but also you can also attach insect nets to the outside and still open the windows without any interference. Why is it standard in the UK to have windows that open outwards? Ben, via email

Post your answers (and new questions) below or send them to nq@theguardian.com. A selection will be published next Sunday.

 

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