Broadback wrote:

As long ago as the early 1960s while in Germany all the windows in the
modern flats opened inwards, so cleaning was a doddle, surely that type
of window is available here?

Mine are sash windows in a listed building.
I'd have to get planning permission to change them.

--
Timothy Murphy
e-mail (80k only): tim /at/ birdsnest.maths.tcd.ie
tel: +353-86-2336090, +353-1-2842366
s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland