Nadi®
retrofitting sealing system

Narrow. Discreet. Elegant. Nadi® both protects against dangerous fumes and offers excellent sound insulation values.

Nadi® has enjoyed increasing popularity among architects and planners since the test certificate was awarded. And with good reason: this system not only protects against dangerous fumes, but it also impresses with excellent sound insulation values and contributes to thermal insulation. A real all-rounder.

As the first and so far only tested system on the market, Nadi® has a flexible and spring-mounted sealing profile that compensates for a deformation of the door leaf of up to 10 mm - optionally even up to 14 mm. Nadi® meets the requirements of DIN 18095 as well as the new European standard EN 1634 for use as retrofit smoke protection for existing fire doors.

Economical

Nadi® offers a lucrative alternative, particularly for the renovation and refurbishment of large existing properties.

Noise-reducing

Nadi® reduces the sound. This makes the system the ideal retrofit kit for hotels and large residential properties.

Energy efficient

Reduces unpleasant draughts, increases the energy efficiency of the building and contributes to environmental protection.

Easy to install

The slim and lightweight sealing profile is very easy to install with just one installer - and can be installed during ongoing operation.

Maintenance-free

Durability and reliability have been proven in rigorous testing procedures; no maintenance required.

Budget-proof

Nadi® offers maximum budget security, as the calculation is based on the number of sets and not on running metres.

Turn old into tight. The heart of Nadi® is the spring-mounted seal. The system thus ensures that the door always closes tightly – even if the door is thermally deformed. The special feature: Nadi® is able to compensate for a twisting of the door leaf of up to 14 mm. This gives you valuable minutes to save lives if the worst comes to the worst. With Nadi® you have certainly thought of everything.

Nadi® - image video

Guideline

Retrofit your door with the Nadi® circumferential sealing system and obtain your permit

Retrofit project subject to permit

Requirements for the door to be retrofitted must be checked against the building permit and the fire protection concept.
Contact the responsible fire protection officer, who will determine how to proceed.

Retrofit project not subject to permit

Determine the requirements for the door to be retrofitted on the basis of the existing building/fire protection concept.
1st possibility: Present your building project to the low-level building inspection authority. They will tell you how to proceed.
2nd possibility: Contact an expert, who will assess in advance whether it is possible to retrofit the door and will tell you how to proceed.

Smoke protection door

Seal intended to restrict the entry of smoke within specified limits when it is closed. This is done in such a way that in the event of a fire, the room located behind it can be used to rescue people for about 10 minutes without the need for respiratory protection.

In the event of fire or smoke, it is assumed that a door leaf becomes strongly deformed and thereby loses its ability to provide a tight seal. The leak rate of a door during a laboratory test, with a maximum pressure differential of 50Pa and a maximum temperature of 200°C, must not be greater than 20m3/h in the case of single-wing doors and 30m3/h in double-wing doors.

DIN 18095-2

This standard contains requirements for smoke protection doors, regardless of the materials they are made of. Smoke protection doors which comply with this standard are suitable for preventing the spread of smoke in buildings. The standard covers single-wing and double-wing hinged doors; other types of doors such as sliding doors, roller shutters and sectional doors etc. do not fall within the scope of this standard.

DIN EN 1634-3

Test standard: Smoke protection door seals. This European standard relates to fire and/or smoke protection properties only, including the ability to approve automatic closing.

Building law information

Athmer oHG confirms with the test certificate issued by the Materials Testing Institute of North Rhine-Westphalia (MPA NRW) that the Nadi® frame sealing system in conjunction with the Schall-Ex® L-15 FS retractable floor seal is suitable for upgrading a fire door based on DIN 18095-2 and DIN EN 1634-3 for smoke doors. The test certificate serves the responsible expert, the fire protection officer or the responsible building inspection authority as a guarantee of the use of a professional and high-quality sealing system. Retrofittable sealing systems are not part of the general building approval (abZ) for a door. For any official approval that may be required, we will provide you with the test certificate. Please do not hesitate to contact us.

Test certificates

Nadi® has been tested in accordance with the standards of DIN 18095 and the European standard EN 1634 for use as retrofit smoke protection for existing fire doors. In addition, the innovative sealing system has received the test certificate (exemplary test) of the Materialprüfungsamt NRW and successfully demonstrated its sustainability within the scope of a cycle test (1 million switching operations).

Nadi® - seal for retrofitting

for flush and reveal mounting

One system for many different applications

Innovative sealing system for retrofitting smoke protection*
Cold, draught and humidity stay outside
Improved sound protection as a side-effect
Optimal sealing thanks to the spring-mounted sealing profile

* We confirm the suitability of the Nadi® frame sealing system and the automatic Schall-Ex® L-15 FS drop seal for the upgrading of a fire protection door based on DIN 18095-2 and DIN 1634-3. For potential necessary regulatory approval, we provide a report of the MPA NRW.