While ventilation ducts are essential for circulating fresh air, they present a major vulnerability during a building fire, acting as a network of chimneys that can rapidly distribute lethal smoke and flames. Fire dampers are mechanical or intumescent devices installed inside these ducts where they cross fire-rated compartment walls. At FSD Maintenance, we provide specialist fire damper installation, testing, and maintenance across Kent and the South East. Our accredited technicians ensure that your dampers trigger flawlessly in a fire scenario, instantly sealing off the ductwork to preserve compartmentation boundaries.
We manage the entire lifecycle of your building’s fire dampers, combining precision installation with rigorous statutory maintenance:
Precise integration of curtain, multi-blade, and motorized fire dampers into new and existing commercial ductwork networks.
Executing rigorous physical drop-tests to ensure the mechanical fuses melt and shutters close fully without obstruction.
Installation of static intumescent grilles within small transfer air paths and partitions that expand under heat to block fire.
Cutting and installing certified inspection hatches into existing ductwork to allow for thorough, code-compliant internal testing.
Every single damper is mapped, given a unique ID tag, and recorded with side-by-side before/after testing photographs.
In the UK, fire damper testing is not a recommendation—it is a strict legal mandate. Under BS 9999:2017 guidelines, all fire dampers must be tested by a competent person at regular intervals not exceeding 12 months. For buildings operating in dusty environments, hospitals, or high-risk zones, testing must be even more frequent. FSD Maintenance ensures your premises fully comply with the Regulatory Reform (Fire Safety) Order 2005, providing a legally robust, insurance-compliant testing report that protects building managers from prosecution and operational closure.
According to BS 9999, all mechanical fire dampers must be tested at least once a year (every 12 months). Failing to provide documented proof of these annual tests can invalidate your commercial building insurance and lead to severe legal penalties for the building’s designated Responsible Person.
If a damper is found to be corroded, blocked by debris, or has a broken fuse link, we log it immediately as a critical defect. FSD Maintenance provides a swift remediation service, repairing or replacing the faulty components or the entire damper unit to restore your building’s compliance layout promptly.
To properly test, clean, and reset a fire damper, a technician must be able to see and reach inside the ductwork. If your original HVAC installer did not include inspection hatches, our Kent team can professionally cut and install fire-rated access panels right next to the dampers without compromising airflow.
A fire damper is triggered thermally (usually by a fuse link melting at around 72°C) to stop the physical spread of heat and fire. A smoke damper is typically motorized and connected to the building’s central fire alarm or building management system (BMS), closing automatically as soon as a smoke detector is triggered to stop toxic gases from moving through the property.
Don’t wait for an inspection failure to secure your property. Speak directly with a Kent-based passive fire protection specialist today to discuss your project requirements or to book a comprehensive site survey.
