I live in a 6th floor flat. I have just found out that not all my doors are fire doors as the previous owner must have changed some of them! I will be having fire doors put in as soon as possible but am wondering if I need any fd60 doors? I have an open plan living room and kitchen leading into the main hallway. Does this door need to be fd60 or will fd30 be fine? 

The main hallway needs to be a 30 minute protected enclosure so fd30 fire doors are sufficient and self closing devices are not required. However the front door needs to be fd30s fire door with an approved self closer.

Check out Approved Document B (Fire Safety) Vol 2