England · London · fire protection
Smoke vents in New Addington
For smoke-vent quotes in New Addington we start from the published geography: London, England, 22,843 usual residents in 2019 (ONS cities and London 2019). We do not invent a local depot to match the place name. Classification on that source: Outer London BUA. New Addington is an ONS London built-up area (Outer London BUA), which is not the same thing as a council boundary or a single stair core.
Rain sensors lose to a fire input
Comfort mode may shut a vent when it rains. Smoke mode has to win. On a visit we simulate the fire-alarm contact and watch whether a wet sensor still holds the stair vent closed. If it does, the panel logic or the sensor wiring is wrong, and the roof hatch is not a smoke vent until that is fixed.
Shafts are a sequence
A smoke shaft works only if the inlets and the outlet open in the combination the design states. Opening the head vent while every lobby damper stays shut is not a pass. We do not enter a shaft that has no safe access, and we write “not accessed” rather than “satisfactory”.
Automatic opening vents are life-safety smoke control, so this sits with fire protection and is quoted across the UK. Population figures are the published resident counts named above. They are not a survey of vents in New Addington.
