Old Fire Doors: Nominal, Notional and Existing Doors

One of the things I come across quite a lot when looking at older buildings is the assumption that if a fire door does not look like a modern fire door, it must be wrong. I don't think you can work that way. I've seen old doors that have been in buildings for decades and still have a perfectly reasonable case for remaining in place. I've also seen old doors where nobody could properly explain what they were, what they were designed to do, or whether they were suitable for the building they were now installed in. Those are two completely different situations. The important thing is to establish what you are actually looking at before deciding what needs to happen. An old fire door is not automatically a bad fire door Modern fire doors have things we are now…