Upper-floor windows often feel “safe” because they’re harder to reach, but they’re not always as secure as we think. Balconies, nearby trees, boundary walls, or even adjoining buildings can give easier access than expected. An open window on a first or second floor might tempt someone willing to climb.
Locking windows at night, especially in accessible areas, creates one more barrier. It also protects against other risks: strong wind slamming windows, pets or small children leaning or pushing them further open, and rain suddenly blowing in.
In some cases, local rules or insurance conditions even expect windows to be properly secured when you’re sleeping or away.
You don’t need to turn your home into a prison, but treating upper-floor windows with the same common sense as ground-floor ones is smart. Tilt them slightly for ventilation if your design allows, but keep proper locks engaged when you’re not there to watch.
