Compartmentation within roof void/loft space - Converted properties with Simultaneous Evacuation Strategy

[Jonny Roberts]

In existing properties converted into flats with a simultaneous evacuation strategy, is there ever a requirement to sub-divide the roof void/loft space?

For example, a four storey mid-terrace Victorian property converted into flats accessed via a single communal stairwell with two flats located at top floor level. 

[Jonny Roberts]

An additional question is what is the requirement for fire separation between the roof void and the escape route/stairwell in a converted property with a simultaneous evacuation approach? (i.e. to stop a fire within the roof void passing into the escape route).

[Tom Sutton]

You have to achieve compartmentation between flats in accordance with HOUSING – FIRE SAFETY Guidance on fire safety provisions for certain types of existing housing and all situations will differ. Check out the above guide.

[Jonny Roberts]

Thanks for your response Tom.  However, the LACoRS guide does not make any mention of roof voids/loft spaces as far as I can tell.