Double-leaf fire doors

E means integrity: the ability to resist flames and hot gases for a stated period. I means insulation, while the number is the classification time in minutes. Smoke-control performance is tested and classified separately. The order must follow the designation stated in the project and in the classification documents for the specific doorset.

The rating should not be chosen only by room type or by adding an arbitrary safety margin. It is defined by the design, fire compartment, building use and requirements for the specific opening. Confirm the full classification, opening size and intended use with the responsible project specialist before ordering.

They are used in openings within fire-separating elements, protected escape routes, stairwells, plant rooms, warehouses, production sites, car parks and public buildings. The required rating and any smoke-control requirement for a particular location are defined by the project, not by a generic room list.

Fire resistance applies to a tested and classified assembly: leaf, frame, seals, hardware, fixings and installation solution. A steel skin or non-combustible core alone does not prove a rating. An ordinary steel door without the relevant documentation cannot be claimed to have EI or smoke-control performance.

Not automatically. Fire resistance, smoke control, burglary resistance, thermal transmittance and acoustic insulation are separate characteristics. If the project requires several of them, each performance must be declared for the specific door configuration and intended use.

Yes, provided that the selected configuration is within the field of application of the specific doorset classification and is permitted by the manufacturer. Maximum sizes, glazing layout and area, locks, closers and other hardware vary by model. These options must be checked before the price and order are confirmed.

The classification applies to the tested assembly, not only to the leaf. The frame, seals, hinges, lock, closer, glazing and fixings work together to provide the declared performance. Substituting or adding components without approval may fall outside the classification and the manufacturer's installation instructions.

Only if the model is intended for external use and, in addition to fire performance, declares the required weather, water, air and thermal characteristics. Protection from rain and corrosion must also be considered. Whether an external opening requires fire resistance is determined by the project and the applicable LBN requirements.

Yes. The doorset classification and installation documents identify the supporting constructions to which the result applies, such as a rigid or flexible wall with stated properties. A solution tested in concrete cannot automatically be transferred to a plasterboard partition without appropriate evidence.

Record the structural opening width and height at several points, wall thickness and material, finished-floor level, opening direction, hinge side and available hardware clearance. The clear passage after installation is also important for escape routes. A professional site survey is recommended for non-standard openings.

It defines the leaf movement and hinge side, affecting escape, clear passage width and hardware placement. LBN 201-15 requires escape doors to open in the direction of escape, subject to the exceptions stated in the regulation. Once the design is approved, the direction must not be changed without review.

Yes. A fire-rated doorset may be steel, timber, aluminium or largely glazed if that construction has been tested and classified. The glass type, size and fixing method, together with the framing solution, form part of the documented configuration and cannot be changed freely.

The door must normally be able to close automatically. It may be held open only by a device included in the design that reliably releases it on a fire signal or power failure. Wedges, cords and other physical obstructions prevent the door from performing its protective function.

Not without a compatibility check. The replacement must be permitted by the door manufacturer's documentation or supported by the relevant classification and instructions. Even visually similar hardware may differ in fire performance, loading and operation, so replacement should be handled by a competent service provider.

Only at locations provided by the manufacturer and with permitted components. Drilling may damage the core, seals, glazing fixings or reinforcement and alter the tested construction. A compatible technical solution is required before installing access control, a viewer, cabling or any other device.

Only if the specific grille and installation method are included in the tested or extended-application configuration of the doorset. An ordinary ventilation grille breaches the fire separation. Ventilation is often handled by a separately designed system with its own fire-resisting closure.

Yes, if the lock, cable transfers and fixings are compatible with the specific doorset and the system does not obstruct self-closing or escape. The design must address safe release, behaviour on power failure and any required interface with the fire alarm system.

Only in accordance with the manufacturer's maintenance and finishing instructions. Identification markings, intumescent or smoke seals, moving parts and operating gaps must not be painted over. Check the permitted coating, surface preparation and film thickness before repainting.

Yes. Baltijas Durvis provides advice, delivery and professional installation across Latvia. Before preparing the offer, we check the opening, wall type, configuration and project requirements so that the installation solution follows the documentation for the specific doorset.

The door must open freely and fully close from the intended positions, the leaf must latch, and seals must remain continuous and undamaged. Checks also cover gaps, fixings, the closer, closing sequence for double leaves, threshold, escape hardware, identification marking and installation records.

Do not disable the closer, trim the leaf or alter the frame geometry. Possible causes include hinge settlement, closer adjustment, damaged seals, a dirty threshold or deformation. The protective function may be compromised until the fault is corrected, so contact a competent service provider.

The package must identify the product and its declared performance. It normally includes the declaration of performance, classification information, marking, installation, use and maintenance instructions, and permitted-hardware data. CE marking applies where a harmonised standard covers the product and intended use. Installation records and warranty documents should also be retained.