Fire protection? It’s all clear with COMPAIR® flow!
COMPAIR® flow plastic ducts from Naber are permitted under fire protection law when laid conventionally in houses and flats with up to 400 square metres. They also do not require non-combustible cladding.
Questions frequently arise concerning the fire protection assessment of plastic ducts for extractor hoods. The legal foundations are not simple. Which is why we commissioned the specialist lawyer Norbert Küster from Düsseldorf to clarify this question.
His expert opinion is clear: with regard to suitability under fire protection law, not the product but by its area of application is decisive. In other words: in almost all cases, normal flammable plastic ducts (certified according to DIN 4102-B2) are permissible. This also includes the complete COMPAIR® flow range.
According to §§ 29 to 31 of the Model Building Regulation (Musterbauordnung), fire protection in buildings is based on the partitioning of functional units by means of suitable walls and ceilings in fire protection sections. In large buildings, these sections are separated from each other by suitable ceilings and walls. The building regulations of the federal states define the standard size of these functional units as a maximum of 400 square metres.
For you as an architect, kitchen planner or fitter, this means: as long as you lay the exhaust air duct inside a flat or house of up to 400 square metres and route it outdoors from there, you can use COMPAIR® flow. This regulation also applies to non-residential buildings.
For routing through fire protection walls and ceilings: COMPAIR STEEL flow®
If you lay an air duct through separating walls or fire protection walls into other functional units under fire protection law or if it runs in vertical ventilation shafts, you are on the safe side with COMPAIR STEEL flow®.
Only then does § 41 para. 2 and 3 of the Model Building Regulation require non-combustible material. COMPAIR STEEL flow® is certified as non-combustible according to DIN 16501-A1 and has the same precisely fitting dimensions and excellent ventilation performance as the plastic version. COMPAIR STEEL flow® is also suitable for pressure-resistant installation in floor structures, freely suspended as a design element in loft ambience or for projects abroad with different requirements.
Ventilation systems directive is subordinate
Somebody argues with the ventilation systems directive (LüAR)? Here too you can rest assured. This internal administrative regulation is subordinate to the Model Building Regulation and is only applicable in the above-mentioned cases.
You would like to know all the details, or need the expert opinion for your client? You can download it here free of charge.