Hi, I have a loft that was built into the house in the 1980's but only had access via loft ladders. I assume they wanted to convert it fully later. I want to put stairs in and bring it up to modern building regs. my question is with fire doors. If I put stairs in and have a landing at the top with 2 fire doors going to each room. Does that mean I do not need fire doors on the 2 floors below. I am getting mixed info from different people I talk to who already have loft conversions. Someone told me that you need fire doors on all habitable rooms regardless of what you have in the loft.