Staging Site!

UNION warns of the dangers of incorrect closer specification for non-insulated metal fire doors

UNION warns of the dangers of incorrect closer specification for non-insulated metal fire doors

UNION, part of ASSA ABLOY Security Solutions, a UK division of ASSA ABLOY, the global leader in door opening solutions, is warning specifiers and installers about the dangers of fitting incorrect door closers for non-insulated metal fire doors.

While many door closers are stated as being approved for metal fire doors, in a number of cases this only applies to insulated metal fire doors.  And with around 8 out of 10 metal fire doors sold in the UK are non-insulated, this means many door closers are not fit for purpose – with potentially disastrous results.

Non-insulated systems provide certified fire resistance for integrity only, protecting against the passage of fire and smoke. However, as the name implies, these fire doors are not certified for insulation and so cannot protect against the passage of heat. This becomes an issue for a door closer that is filled with mineral semi-synthetic mix oil, as it can actually ignite when it reaches a high enough temperature.

Certifire, the testing organisation, has recently revised their certification to more accurately state the type of metal fire door a door closer is approved for use. But with so many installers and specifiers unaware of this risk, UNION is urgently calling on installers and property owners to check their closing devices are suitable for non-insulated metal fire doors.

David Hindle, Door Closer Specialist at UNION, explains: “We believe many door closers could have been incorrectly specified for non-insulated metals fire doors, which could pose a real danger to lives in the event of a fire. These door closers are not suitable for fire escapes or other applications where extreme heat could risk lives or cause serious damage to property.

“Certifire have taken a proactive stance on this matter and updated their certification to give a specifier or installer more detailed information.

“Professionals can overcome this issue by following three simple steps. First of all, check all relevant Certifire documentation and make sure this has been updated for any recent amendments. Next, check whether the documentation includes details on the type of fire doors that the door closer has been tested on. Finally, where metal fire doors are covered, are there any restrictions on the type of fire door?  By following these steps you can discover if you have any issues to resolve with your door closers.

“For complete peace of mind, all UNION door closers are supplied with a glycol mix that has been successfully tested on non-insulated fire doors by two UKAS accredited fire testing facilities. Therefore, those choosing a UNION door closer can be safe in the knowledge that they are fitting a device that does not contain an oil that could possibly ignite in the case of a fire.

“This is a hugely serious issue that all specifiers and installers need to be aware of. Anyone worried that they may have a door closer that is not safe can also call us for advice on 0845 2232124.”

For more information, please visit www.uniononline.co.uk.

About Fire Buyer

International Fire Buyer is the leading authority in global passive and active fire content, delivering expert news, in-depth articles, exclusive interviews, and industry insights across print, digital, and event platforms. Published 10 times a year, the magazine is a trusted resource for professionals seeking updates and analysis on the latest developments in the fire sector.

To submit an article, or for sponsorship opportunities, please contact our team below.

katie circle headshot

Katie Tracy

Editor

Chris Lingham - maverick-country.com

Chris Lingham

Group Sales Manager

Afua Akoto

Marketing Manager

Read the Latest Issue

May 2026 International Fire Buyer - Firebuyer.com

May 2026 Issue

Follow us on LinkedIn

Follow us on LinkedIn

Click Here

Advertise here

Reach decision makers and amplify your marketing

Advertise here

Click Here

Related News

BSI new standard on fire doors - firebuyer.com

BSI release new standard on fire doors

BSI have released a revision on its standards for fire resistant and smoke control doors.BS 8214:2026 covers fire doors…
Sentry Fire Safety Group report on fire doors - Firebuyer.com

Report uncovers gaps in social housing fire door compliance

Sentry Fire Safety Group used FOI requests to local authorities in England to gather data on the inspection of fire doors.
Intersec crowd-Firebuyer.com

Intersec set to open with largest edition to date

Intersec 2026, the world’s leading platform for manufacturers and buyers in the security, safety and fire protection industries, opens

Fire Doors – Modernising Fire Door Specifications  

Fire-door compliance has moved from parts to full systems. Modern estates need certified doors, hardware and documentation…
A+A 2025-firebuyer.com

A+A 2025 celebrates record participation

A+A 2025, the world’s leading trade fair for safety, security and health at work, closed in Düsseldorf with record participation and strong….
Carousel Quick Fire Oct25-Firebuyer.com

Quick Fire – Iain Banks, Allegion UK

To me, fire safety is about ensuring each fire door component functions as intended in an emergency situation. When all elements…
Picture of 2 Quantum Series helmets- photo by KASK-Fire Buyer.com

KASK Updates Quantum Series Helmet

Head protection specialist KASK has updated Quantum series of helmets. Developed as KASK’s first helmet series for wildland firefighting…

Product Spotlight – AB PODAB

Firefighters face serious risks every day—not only while battling fires, but also through the gear they wear and handle after each call-out
Picture of Hyfire Taurus Wireless Door Holder poster - Photo by Hyfire - Fire Buyer

Hyfire Taurus Wireless Door Holder Enhances Fire Safety

Hyfire has announced the launch of its new Taurus Wireless Door Holder, delivering a smart, reliable solution to one of fire safety’s most
Picture of Allegion Fire Door Logbook - Photo by Allegion - Fire Buyer

Allegion Launches Fire Door Logbook

Allegion UK has unveiled a new Fire Door Hardware Logbook, launched in support of this year’s Fire Door Safety Week.
Scroll to Top