Rooves or Roofs?

Apparently both of them are acceptable. One is more modern than the other but I guess it’s what is most comfortable for you.

This is the view from the side window now that the leaves are going. Reminding me that despite having lots of trees in the garden we still do live in a city of old buildings, built of bricks, with a small amount of new buildings going up. Those will have flat rooves (there I’ve made my choice!)