Have you noticed a crack (or two) in your ceiling? We asked our in-house carpentry expert to explain what these different cracks might mean.

Mark the endpoints of a new hairline crack in a wall or ceiling as soon as you notice it, document the date, and keep track of how it grows or widens over time.

And one of those main lessons is around how to deal with hairline cracks in the wall. 'Initially, it seemed really simple and straightforward. We'd just fill the cracks with Polyfilla, leave it to dry ...