In most cases, the entrance doors to flats accessed from a communal area should be self-closing fire doors. We undertake regular inspections of entrance doors to apartments and we replace doors when they are assessed as sub-standard.
A self-closing fire door is one that will close fully into the frame by way of a self closer. This could be either an overhead closer (a box at the top of the door with a hinge) or concealed closer (a chain buried within the door and the frame).