New intumescent kit to ensure fire door integrity

We are pleased to announce the launch of a new intumescent kit range, which ensures the integrity of a fire doorset is not compromised by morticed ironmongery. These new kits will be available for some of our most popular CE marked locks, hinges and latches.

Morticing can cause hinges, locks, latches and concealed door closers to no longer meet the requirements for fire door safety. Our new kits provide intumescent sheets made from an ultra-thin and flexible graphite material, which allows for high levels of expansion and insulation, preventing heat transfer on ironmongery rebated into timber fire doorsets.

Suitable for both 30 and 60 minute applications on timber doors, the intumescent sheets arrive pre-cut for a selected range of our ironmongery. This includes ASSA modular locks and the ASSA ABLOY DC840A and DC860 concealed door closers.

The intumescent sheets have a self-adhesive backing, which means they can be quickly and easily applied to ironmongery, for a simple installation into the prepared door.

Sabrina Bettles, Product Category Manager at the ASSA ABLOY Door Hardware Group, explains: “In response to growing concerns around the long-term integrity of fire doorsets and the impact that morticing can potentially have on rebated ironmongery, these new kits have been launched to deliver assured levels of protection for installers and end users.

“The kits are incredibly easy for installers to handle, and have been tested and comply with our hardware to BS EN 1634-1: 2008 for 30- and 60-minute timber door ratings, offering total safety for end users.

“Other intumescent materials on the market will typically be fibrous and thicker, and can be prone to snapping, while also generally being harder to wrap around products. In comparison, the intumescent sheets we offer contain no fibres or irritants, and are only 0.8mm thick, which means minimal rebating is needed. They are very flexible and clean to work with, and are unaffected by moisture, humidity, atmospheric pollution and other common chemical substances.”