Siderise RH Horizontal Cavity Barrier
Siderise RH Open State Horizontal Cavity Barrier is a stone wool-based fire barrier designed for ventilated rainscreen façades.
The barrier features a non‑combustible stone wool lamella core with reinforced foil faces and a reactive intumescent strip bonded to the leading edge. In the event of a fire, the intumescent rapidly expands to seal the ventilation gap, reinstating the compartment’s fire integrity and insulation performance.
- Open-state ventilation and drainage
- Fire resistance up to E120 / I120 (RH25 configuration)
- Non-combustible stone wool core
- RH25 and RH50 cavity options
- IFC certified and tested to ASFP TGD19 principles
- Intumescent strip for cavity closure in fire
Siderise RH is a high‑performance solution that balances ventilation and robust fire protection.
Siderise RH provides specifiers and contractors with a reliable barrier for ventilated façades where maintaining airflow and preventing fire and smoke spread are essential. Its stone wool core and quick‑acting intumescent strip deliver dependable fire‑resistance performance
Easy to install within horizontal cavities behind cladding systems, it is suitable for both new build and refurbishment projects. Certified to recognised fire‑safety standards and compatible with modern rainscreen systems, it provides effective protection while maintaining ventilation.
In-House Metal Fabrications
Whether it’s a planned package or an urgent site requirement, our in-house fabrication team can manufacture roofing and cladding components to suit your project.
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