In article ,
John Rumm wrote:

Most of this is covered by building regs. None of the rooms should be
fire hazards if done right. The fire regs will require that there is a
means of escape window (one that is big enough and low enough to climb
out off) from each habitable room (i.e. not bathroom). This can be a
Velux style roof window.

Someone else has already posted that this needs to be accessable from
a ladder (which makes perfect sense). We have a conservatory the full
width of the back of our house so I assume that this would mean an
escape window in the front?

... The new habitable rooms will require 30 min
fire doors. If the building is now over two storeys then mains powered
and interlinked smoke detectors on each floor. Existing doors that open
onto the exit route need to be made self closing (unless the stairs are
separate/enclosed).

Do these doors on other floors have to be fire rated as well? I guess
and autoclosing door that burns in 30 seconds is a bit of a pointless
exercise! I ask as we are in the early stages of thinking about a loft
conversion and would prefer not to replace the doors on the living and
dining rooms. We have glass panelled doors to allow some natural light
into our (very dark) hallway. Replacing these with firedoors would mean
we loose this light or would have glass with wire in? Or is there a
glass panelled door with clear glass of somesort that is firerated (sounds
pricey...)

The ceiling under the new floor will need to be at
least 12mm PB with skim, or, extra rockwool or similar can be added into
the new floor to enhance fire break performance).

Ah. Thats promising. I was imagining that we would need new ceilings in all
the bedrooms - something I would again rather avoid if there is another
option. I'm not interested in bodging it and def want something that is
upto (or exceeds) fire regs. I would be happy to spend a bit more to
minimise disruption to the rest of the house though!

Cheers,

Darren