Quantity and position of smoke alarms
If you require building regulation sign-off, the installation of smoke alarms needs to also adhere to BS 5839-6:2004. This is referenced in the Fire Safety requirements outlined in The Building Regulations 2010; Position of heat and smoke alarms: 1.10-1.18.
As part of a retrofit, there are various considerations for the quantity and placement of smoke detectors. In such a project, although the above-mentioned regulations do not need to be met (as part of existing buildings where material alterations are not being made) – you may wish to place smoke detectors in the following areas: