Special fire-resistant components in ventilation technology – duct components
Special fire-resistant components in ventilation technology are service duct components consisting mainly of a supporting tray, cladding, supply and discharge lines, electrical cables and ventilation ducts – including the appropriate fire-stopping and fire-sealing measures where required. The services may or may not be separated with mineral wool filling.
The duct components may only be used in a vertical design to prevent the spread of fire from storey to storey for the fire-resistance duration verified for the assembly as a whole.
Regulatory framework
DIBt grants national technical approvals (abZ)/general construction technique permits (aBG) for vertically arranged special components for which a fire-resistance duration for preventing the spread of fire and smoke from storey to storey is required and which are used in ventilation and/or other ductwork.
If the cavities between the services integrated into the cladding of the special components/service duct components need to be filled with mineral wool, this must be done by machine. Only companies possessing sufficient expertise in this field and using personnel trained and certified by the holder of the national technical approval/general construction technique permit may do this.
Please also refer to the relevant provisions of the federal states following MVV TB 2020/1, Sections A 2.2.1.8 (MLAR) and A 2.2.1.11 (M-LüAR).
National procedure
To prepare an abZ/aBG for your construction product, we need an application from you. We recommend that you contact us prior to doing so. Feel free to send us your enquiry informally via email to dibt(at)dibt(.)de or to the competent technical contact listed in the top right.
For a first assessment, please send us the following information:
- Description of the construction product and its intended field of use
- e.g. material, configuration, number of sizes, variants, dimensions
- e.g. use in walls, ceilings, interior construction, building services
- Description of the construction technique and its field of application
- e.g. design of walls, ceilings, elements, etc., and interaction of components
- e.g. application in foundation engineering, reinforced concrete construction, building insulation; as load-bearing or non-load-bearing component; under static and quasi-static loading; fire exposure; other environmental exposures
- Information regarding impact on regulatory concerns
- in particular structural integrity, fire protection, health and environment protection, sound insulation as well as thermal performance
- Explanation of need for an abZ/aBG
- Do you significantly deviate from the Technical Building Rules?
- Or do neither Technical Building Rules nor generally recognised technical rules exist?
- Contact details
- preferably email address and/or telephone number, as well as name, organisation/company, and postal address
We will then contact you to clarify the next steps.
If you already hold a DIBt approval and/or construction technique permit and wish to apply for an amendment, supplement, or renewal, please use the form provided below.
- pdf-Datei Application for amendment / supplementation / renewal of a national technical approval and/or construction technique permit (4 pages ) Last updated: 10 April 2024; Application form
| Subject concerned | Applicant | Decision no. |
Validity
from / to |
|---|---|---|---|
| Feuerwiderstandsfähiges Installationsbauteil "AUSTROFLEX FIRE-FLOC GKF" | Armacell Austria GmbH Finkensteiner Straße 7 9585 GÖDERSDORF ÖSTERREICH | Z-41.9-704 |
Z:
10.10.2025 G: 04.01.2028 |
| Feuerwiderstandsfähiges Installationsbauteil "AUSTROFLEX FIRE-FLOC GKB" | Armacell Austria GmbH Finkensteiner Straße 7 9585 GÖDERSDORF ÖSTERREICH | Z-41.9-705 |
Z:
30.01.2024 G: 10.09.2026 |
| Feuerwiderstandsfähiges Installationsbauteil "Conlit Firesafe" | DEUTSCHE ROCKWOOL GmbH & Co. KG Rockwool Straße 37-41 45966 Gladbeck | Z-41.9-709 |
Z:
07.11.2024 G: 10.09.2026 |
| Feuerwiderstandsfähiges Installationsbauteil "Ecofibre Brandschutz 2x20mm" | ECOFIBRE Dämmstoffe GmbH Arsterdamm 72 28277 Bremen | Z-41.9-712 |
Z:
25.11.2025 G: 10.09.2026 |
| Feuerwiderstandsfähiges Installationsbauteil "Knauf Insulation ProtectFill (2 x 20 mm)" | Knauf Insulation GmbH Heraklithstraße 8 84359 Simbach am Inn | Z-41.9-713 |
Z:
10.09.2021 G: 10.09.2026 |
| Feuerwiderstandsfähiges Installationsbauteil "Ecofibre Installationsschacht Brandschutz 2x12,5mm" | ECOFIBRE Dämmstoffe GmbH Arsterdamm 72 28277 Bremen | Z-41.9-715 |
Z:
31.03.2025 G: 10.09.2026 |
| Feuerwiderstandsfähiges Installationsbauteil "TECEsystem-Pro" für eine Feuerwiderstandsdauer von 90 Minuten | TECE SE Hollefeldstraße 57 48282 Emsdetten | Z-41.9-718 |
Z:
17.10.2025 G: 17.10.2030 |
| Bauprodukte für feuerwiderstandsfähige Installationsbauteile "Geberit Quattro..." | Geberit Vertriebs GmbH Theuerbachstraße 1 88630 Pfullendorf | Z-41.90-708 |
Z:
27.05.2024 G: 12.06.2029 |
| Bauprodukte für feuerwiderstandsfähige Installationsbauteile "TECEsystem-Pro" | TECE SE Hollefeldstraße 57 48282 Emsdetten | Z-41.90-717 |
Z:
16.09.2025 G: 16.09.2030 |