Rainbow Six Siege
Rainbow Six Siege: Floors Are Sites Too
Siege sites die from above and below. Reinforcing only walls is how you get farmed through a floor.
Hatches are a site wall
If a hatch is open, the site is already entered. Reinforce or watch it. Rainbow Six Siege vertical is not optional on most maps.
Attackers should open a hatch even if they do not drop. Pressure from above wins plants.
Soft floors are guns
Shotgun a floor if you can hear them plant. Defenders should line the floor with a rotate or a mute. Ignoring the ceiling is a throw.
Do not all hold the same door while the floor is open. Someone has to watch vertical.
Roamers play the floors
A roam below can catch a plant. A roam that never rotates is just dead. Come back for the retake.
If you lose both hatches in prep, play a different site next round. Adapt.
Players who want extra context after this guide can also use additional information.