Domestic Smoke Alarms: UK Requirements and the New BS 5839-6

Recent changes to domestic smoke alarm requirements affect all UK residential properties. We explain what's changed.. Domestic Smoke Alarm Requirements Current Law (England) Smoke alarms on every storey used for living accommodation Carbon monoxide alarm in any room with a fixed combustion appliance Heat alarm in every kitchen All alarms must be connected (interlinked) Landlords must ensure alarms are in working order at start of tenancy BS 5839 6 Grades Grade D1 — mains powered with battery backup (minimum for new builds) Grade D2 — mains powered detectors, interlinked Grade F1 — battery powered with tamper proof 10 year battery Categories LD1 — detection throughout (all rooms including cupboards) LD2 — detection in specified rooms + escape routes LD3 — escape route detection only For domestic fire safety guidance, contact us.