Perhaps your greatest contribution to managing behaviour around the school site is your presence. If you have your coffee in the playground, your lunch with the students (what % of your students eat at a table with an adult every day?) and are ever-present in the corridor outside your classroom students will see consistency in your expectations for behaviour both in and out of class. They will grow used to your interventions in social areas and your presence will slowly have an impact on their behaviour.
The relationships you forge will be strengthened, with opportunities for less formal conversation presenting themselves daily. In more challenging institutions there can be a tendency to avoid social areas or stray too far away from teaching areas.
For a while it may seem that life is easier that way but by taking the long way round to the staff room to avoid potential problem areas and you risk being effective only within the confines of your classroom.