Fire doors are placed in the building according to the architect's requirements and the applicable standards. Each door shall be marked with a label showing the fire resistance code. This gives the basic parameters of the door, for example EW-30 D3-C. It is a fire-retardant wooden door with a fire resistance of 30 minutes and is equipped with a self-closing device.
An important element of fire doors is the material from which the door is made. Doors marked D3 are wooden doors, D2 are doors made of both combustible and non-combustible materials and D1 are steel doors and therefore doors made exclusively of non-combustible materials. If your project specifies that you are to use an EW30 D3-C fire stop, you can use a timber fire door. However, if it is located in a place that is frequented or subject to excessive physical stress, you can use a D1 (steel) door with the EW30 D1-C designation.Because D1 doors meet the parameters of D3 doors, they can be interchanged in this way. However, the reverse is not possible. Although the door meets the 30 minute fire resistance rating, it does not have the characteristics of a steel door. They will not accept such a substitution at the time of approval.
Fire doors Kunaj
All fire doors in our range are certified and properly tested by a testing institute. The installation of the door is certified either in a steel frame or in a wooden frame. In the case of a steel frame and provided that it is installed by concreting, it is also possible to install the fire doors into such an originally installed frame. However, the technical condition of the door frame must be checked by a technician during the inspection.
Our wooden door frames are certified with installation on fire-resistant foam and also in the EW45 or EI45 standard. Fire doors must be fitted with a handle that also meets the standards for use in such areas. We use stainless steel handles that are certified for this purpose.
Another important thing is the self-closers. Their installation is legally obligatory in the case of fire doors. For example, in common corridors, cellars, staircase doors, etc. These can be replaced, for example, by an EPS system or motorised closing. Depending on the weight of the door leaf, the type of door closer to be used is then selected. It depends on the force of the pressure and the closing speed. If you have a double leaf fire door, it is necessary to fit a closing coordinator to this door, which ensures that the passive leaf is closed first and then the active leaf on which the lock and handle are fitted. If the coordinator is not fitted it could happen that the door closes in reverse order and therefore would not close properly and would not meet the fire protection requirements.
However, there is an exception where there does not need to be a self-closer on a fire door, and that is in the case of an entrance door to a dwelling. These are usually fitted with a ball on the corridor side and if they had a self-closer, there would be the problem of frequent slamming of the door and spillage in the corridor.
Fire door design
Fire doors can be made of different materials and in different designs. Often, only a self-closer fitted to a door that you would not even know is or must be fire-resistant will alert you to its fire-resistant qualities. As we have already mentioned doors can be wooden, steel, aluminium, even plastic. Our company mainly offers wooden fire doors. We manufacture these in EW and EI standards and in 30 and 45 minute fire resistance. We can also supply steel fire doors for your project, but these are no longer manufactured directly by us.
All the doors we produce in the form of Kunaj are either laminate or veneered. They can be fitted into either a timber or steel frame. We are also certified for a variety of atypical and oversized doors, which can be fluted or non-fluted. Of course, these doors can be glazed, either whole or various strips of glass etc. But the glass must also be fire-resistant certified.
Fire doors can also be used as the aforementioned entrance door to the apartment where a peephole can be built in. This does not affect the fire performance of the door. Another example can be hotel doors which can be equipped with a hidden door closer (built directly into the leaf and frame, which is not visible when the door is closed) but also, for example, a drop threshold (which is also hidden in the leaf) and a card system for unlocking rooms.
The use of fire closures is wide but also necessary, as standards and laws tell us where such structures must be used. However, there is no need to be afraid of this. Even fire doors can be beautiful and designer, and you won't even notice their use in your home or building.
Explanatory notes to fire dampers:
EI - fire-retardant (formerly PB) - They directly monitor the surface temperature on the side facing away from the fire. These elements meet more stringent fire safety requirements and can therefore also be used where EW closures are required. They are generally installed at the entrances to protected escape routes.
EW - Eliminating the spread of fire (formerly PO) - The amount of radiant heat radiating from a surface on the side facing away from the fire at a specified distance is monitored.
S - smoke-tight, against smoke penetration (formerly K)
C - fire dampers with a functionally equipped closing, self-closing or unlocking mechanism (formerly S)
Firelocks are classified according to the fire resistance point in the scale of 15, 30, 45, 60 and 90 minutes on the basis of the tests carried out
The type of construction used in terms of flammability and the method of incorporation of the building materials used is expressed by the written mark D3 (wooden), D2 (of flammable and non-flammable materials), D1 (steel)
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