Specific requirements of hinges for FD30 doors
Firstly, FD30 door hinges should be certified to EN1935 and CE Marked. If these markings aren’t clearly displayed on the hinge leaf, it’s very likely not suitable to be used on a fire door – check with the hinge supplier!
Secondly, most door fire tests stipulate a size of hinge that is suitable – 100mm high, 30-35mm wide hinge leaf and 3mm thick is almost universally the optimum dimension. There are acceptable parameters either side of these dimensions, but if you are wanting to fit say a 125mm high hinge, you should check first if this size is covered under the door’s fire test.
Fitting tip: Hinges like the above come complete with steel screws to provide a perfect match with the finish of the hinge leaf. However these can become damaged if the hinge has to be refitted/adjusted a few times in the process of hanging the door. We recommend that you initially fit the hinge with a slightly smaller gauge Reisser (or similar) screw, afterwards swapping these out for the correct Stainless Steel hinge once the install is completed.
Positioning of hinges on FD30 doors
It’s important to ensure that the hinges are fitted in the correct positions on the door. When doors are fire tested, the position of the hinges is carefully noted and the fire test assessment will only cover a certain range of hinge positions based on those test positions. Therefore it’s important to check the fire test data for the door before installing any hinges.
For example, BM Trada’s Fire Assessment for Falcon Panel Product’s Strebord 44mm FD30 door core stipulates the following positions;
Top hinge: 120 – 200mm from head of leaf to top of hinge
Bottom hinge: 150 – 300mm from foot of leaf to bottom of hinge
Middle hinge: Centrally between top and bottom hinges OR can be fitted higher than this point, up to a maximum height of 100mm from top hinge.
Another common door leaf is the Halspan Optima 30, where BM Trada’s Fire Assessment stipulates;
Top hinge: 100 – 180mm from the head of the door to top of hinge
Bottom hinge: 150 – 250mm from the foot of the door to bottom of hinge
Middle hinge: Centrally between top and bottom hinges OR min 200mm from top hinge
Another variation is on the Jeld-Wen Tubeboard door core. On this test the datum for the hinge positions is always the centreline of the hinge;
Top hinge – Max 250mm from the top of the door
Bottom hinge – Max 250mm from the bottom of the door
Middle hinge – Positioned centrally between the top and bottom hinge OR max 300mm below the top hinge
You must use 3 hinges for all standard sized fire doors. Where a door is particularly tall (typically 2400mm high or more) you may be required to add a fourth hinge. Again the fire test data should guide you on this.
On a very small number of door cores you are allowed to fit just 2 hinges where the door is very short (e.g. the Strebord 44mm FD30 door can be fitted with just 2 hinges as long as the door is no taller than 1200mm).
For further detail on taller doors, additional hinges etc. please see our separate post. We also discuss the concept of adjusted door weight, the impact of adding door closers, excessive width door leaves and the impact that this has on hinge specification.
We also have a separate post about when you need to add intumescent pads behind the hinge blade and what thickness pads these need to be – essential reading before fitting your fire door hinges!
Please do get in touch if we can help you further with your hinge requirements. We are trade only suppliers to commercial and refurbishment contractors, fire door manufacturers and installers, facilities management and maintenance companies.