I've noticed (I wish I hadn't) that the floorboards on the upper floor
of my house are a bit cupped. It's an old-ish house (1940s) so is this
something that just happens over the years?

There's no smell of damp and no evidence of moisture, though one wall
does get a little condensation on it.

Do people live with it or should I get it sorted. Am concerned down
the line that a buyer or surveyor might think it's damp.

Thanks, Ed.