What’s the difference between the Classroom and Anti Barricade functions on a lock cylinder? Classroom Function and Anti Barricade Function are two upgrades available on the cylinders that we supply. Both are specialist options for different scenarios but it can be easy to get them confused. Here we set out the differences and when you […]
Read moreShould I fit intumescent lock wraps on fire doors? We find that, whilst a lot of attention is given to the installation of intumescent hinge pads, fitters can sometimes be less aware of the intumescent requirements of mortice locks. However, when you consider the amount of timber that needs removing from a door to install […]
Read moreWhat size intumescent door edge seal should I use? Intumescent door edge seal is a critical component in a fire door. In the heat of a fire, the intumescent material will expand to fill the gap between the door and the frame, thus ensuring the fire integrity of the whole doorset. The longer the door […]
Read moreWhich fire door sign should I use? The most common design of fire door sign is a 76mm diameter disc with a blue background and white contrasting text. There are several versions to be used in different situations: Fire Door Keep Shut This is the most commonly used fire door sign. It should be fitted […]
Read moreSummary of BS EN 1935 Hinge Gradings 14 Different Grades of single axis door and window hinges are identified in this important European standard. Any hinge tested to BS EN 1935:2002 will be graded on this scale. BS EN 1935:2002 classifies door furniture by using an 8-digit coding system. Each digit refers to a particular […]
Read moreWhat is Adjusted Door Weight and how do I calculate it? When specifying a hinge, it’s critical that you check the weight of the door and ensure that the hinge can carry that weight. However there are some additional factors to consider too. The concept of adjusted door weight refers to the additional strain put […]
Read moreCan I fit flush bolts to a fire door? There are several aspects to be aware of, including intumescent protection, length and the material the bolt is made of. INTUMESCENT PROTECTION The first thing you must be sure of is that the flush bolt you are proposing to use has been included in a successful […]
Read moreWhich way around should I fit my hinges? You may not be aware that there is a right and wrong here, however ball bearing and concealed bearing hinges should always be fitted a particular way around! Fire door hinges have a system of grading under BS EN 1935 – this indicates the maximum weight that […]
Read moreWhat is the biggest kickplate I can fit on an FD30 fire door? Many people may not be aware that there are any implications to fitting kick plates to fire doors. And to be fair, if you are wanting to fit a standard sized kick plate of around 150mm or 200mm high, there is generally […]
Read moreWhat height should I fit pull handles and lever handles and what size should they be? We are often asked by our customers what height they should fit lever handles and pull handles. This isn’t a fire compliance issue but is crucial to accessibility. The subject is covered in the important BS8300 standard – ‘design […]
Read moreShould I fit intumescent pads behind my fire door hinges? This common question can often cause confusion! Generally, our customers are dealing with either FD30 or FD60 doors (30 minute fire resistance or 60 minute fire resistance). FD30 doors will normally be 44mm thick, and FD60 doors will be 54mm thick. You need to make […]
Read moreCan I use concealed hinges on a fire door? Architects and clients often request ‘hidden’ doors on higher specification projects. This generally involves concealed door hinges which are invisible when the door is shut. Traditionally ‘Soss’ hinges were the main type used to fulfil the ‘hidden door’ brief, and we still sell many of these. […]
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What should I consider when fitting hinges to FD30 fire doors? We often get asked about installing fire door hinges by our customers, and this blog is intended to answer some of the common queries. We will be talking in relation to FD30 fire doors in this article – that is doors that are designed […]
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