Last edited 24 Sep 2020

Inner room definition

Approved document B, Fire Safety, Volume 1 Dwelling houses, defines an 'inner room' as a:

'Room from which escape is possible only by passing through another room (the access room).'

An inner room is at risk if a fire starts in the other room (the access room - that is, a room through which the only escape route from an inner room passes).

This situation may arise with open-plan layouts and galleries.

Such an arrangement is only acceptable where the inner room is:

A room accessed only via an inner room (an inner inner room) is acceptable when all of the following apply:

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