I think you have been spending too much time in the sun yourselves … (6 August, page 18).

I doubt there will be many 1960s offices still in use by 2020, let alone in 2080, to struggle in the predicted heatwave.

All I hope (as one also “constructed” in 1960) is that the old folk’s home is suitably designed for the expected heat!

Tom Chalmers, Sarnafil, via email