Technical Guidance
Fire performance is a critical consideration in the design and specification of rainscreen cladding systems. Following changes to UK regulations and increased scrutiny on façade construction, it is essential that all elements within the façade build-up are correctly specified and integrated.
Rainscreen systems must be considered as a complete assembly, with fire performance determined by how cladding, insulation, sub-frame systems and fire stopping components work together.
Fire performance in rainscreen systems depends on:
All components must work together to achieve a compliant façade system.
Rainscreen façades include a ventilated cavity, which can contribute to the spread of fire if not properly controlled. This makes fire safety a key design consideration in both new build and refurbishment projects.
Correct system design helps to:
The external façade panel plays a significant role in fire performance. Material selection must align with project requirements and applicable regulations.
Insulation within the façade build-up must be selected carefully, particularly in relation to fire classification and overall system performance.
Sub-frame systems support the façade and can influence fire performance through material selection and system design.
Membranes form part of the façade build-up and must be compatible with fire performance requirements.
Cavity barriers and fire stopping systems are critical in limiting the spread of fire within the ventilated cavity.
Cavity barriers are installed within the ventilated cavity to restrict the movement of fire and smoke. They are typically positioned:
Correct placement and installation are essential to ensure effective performance.
Fire performance must be considered at system level, not just by individual products. This includes:
Design decisions should be made early in the project to reduce risk during installation.
FGF supplies rainscreen systems alongside fire protection materials, insulation and sub-frame systems, supporting compliant façade design and installation.
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Addressing these risks early helps avoid costly issues later in the project.
Fire performance is a fundamental aspect of rainscreen system design. By considering the full façade build-up and ensuring correct integration of all components, contractors and specifiers can deliver systems that are both compliant and effective.
If you need support with rainscreen systems, fire protection or system compatibility:
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Why are cavity barriers important in rainscreen systems?
They help restrict the spread of fire and smoke within the ventilated cavity, maintaining compartmentation.
Do all rainscreen systems require fire protection measures?
Yes. Fire performance must be considered as part of the full façade system design.
Can insulation affect fire performance?
Yes. Insulation selection plays a key role in overall system performance and compliance.
Is fire performance based on individual products?
No. Fire performance should be assessed at system level, considering how all components interact.
Can FGF support fire-compliant façade systems?
Yes. FGF supplies materials and provides guidance to support compliant system design.