• So do you think we'd still need to put some kind of double/folding door into that large opening and to the kitchen to comply or would having all the smoke alarms be enough?

    Any habitable room opening onto the protected fire route (corridor/staircase) will need to be FD20 rated. That includes your kitchen and reception room double doors/large opening, it also includes bedrooms on the upper floors.

    An alternative to the above is a sprinkler/mist system throughout.

    A smoke alarm is needed regardless of the above.
    _

    Edit: The above is for works to an existing 2-storey building (ie: typical Victorian housing stock) where you are looking to do a dormer extension. Different buildings including taller buildings, new-builds, flats in larger houses etc all have different regs.

  • Any habitable room opening onto the protected fire route (corridor/staircase) will need to be FD20 rated.

    The trouble with the fire door thing is everyone props them open. I used to live in a 2001 built house with self closing fire doors that would take a toddlers fingers off which seemed a much bigger risk than a fire so they were wedged.

    In my current place when we added the loft conversion the non-self closing doors were deemed adequate as long as we had many smoke alarms. Seemed a bit rubbish but we didn't want to replace the doors so didn't question it.

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