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When do fire protection requirements for HSB elements and wooden window frames? And why is a fire-resistant HSB wall with a fire-resistant frame still sometimes rejected in practice? In the fourth video of the series by Peutz and WEBO, Harm and Jan address fire resistance in practice.
Why a tested component is not yet a tested separation
Fire resistance is an important consideration in the application of HSB elements, wooden frames and connections in exterior separation structures. Construction projects often look at the performance of individual components, such as a frame, wall assembly or connection. In practice, this is not sufficient. In fire resistance, the complete separation: the construction, detailing, fastening, connection and application in the project must together provide the required performance.
As a result, a tested component is not automatically a demonstrably fire-resistant separation. A fireproof wall and a fireproof frame together do not therefore automatically constitute an approved fireproofing solution. The performance of each component must fit within the overall construction in which it is applied. If this substantiation is lacking, during execution, quality assurance or delivery this can lead to discussion, rejection or repair costs.
In the video, Harm and Jan explain when fire protection requirements apply to HSB walls and window frames and what it takes to properly demonstrate these requirements in practice. This includes the relationship between testing, documentation and application. This very combination is essential to clarify in advance the fire-resistant performance of the overall separation.
For contractors, job planners, engineers and quality assurance personnel, this is relevant because fire resistance is increasingly must be demonstrably substantiated. Not only from a regulatory perspective, but also from a risk management perspective in the construction process. By already looking at the correct system structure and associated documentation in the engineering phase, surprises on the building site are prevented. The video is part of a broader series by Peutz and WEBO on fire behavior, fire resistance and smoke resistance in practice. The following video discusses further why testing as a system is crucial.
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WEBO supports contractors in residential and commercial construction with serial production of wooden window frames and prefabricated HSB elements. The organization works process-driven and BIM-controlled, making planning, quality and dimensional accuracy predictable. Working with wood thereby reinforces the ambitions around CO₂ reduction, circularity and material reuse. WEBO has been working fully integrated with BIM and [...] for more than fifteen years.
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