Door Industry Journal - Spring 2021

Also online at: www.dijonline.co.uk 114 THE door industry journal spring 2021 Fire Doors, Safety & Security Non-insulated steel fire doors: are your door closers compliant? As ARRONE, a brand of the HOPPE Group, launches its new range of door closers for non-insulated steel fire doors, Jonathan Walker, product manager for ARRONE, explains the importance of specifying a door closer designed and manufactured specifically for this door type, and the implications of getting it wrong. Market information provided by David Lycett, managing director of Robust Doors, suggests that 95% of steel fire doors supplied in the UK are non-insulated. Building regulations dictate whether the doors must be insulated or non-insulated, and this is dependent on the building’s intended use. Non-insulated steel doors can help to reduce the budget, but present other challenges that must be considered when specifying the accompanying hardware for fire door applications. Impact on product specification In any mechanical door closer, the speed of closing, final latching and back check are controlled by the movement of oil between chambers. The flammable Improving the Safety of Non-insulated Steel Fire Doors