Fire damper and smoke extract cleaning

Cleaning and testing fire dampers and smoke extract systems

Q: How often do fire dampers need to be tested?

The Model Ventilation Systems Directive (Muster-Lüftungsanlagen-Richtlinie) and the state building regulations require regular functional testing, usually once a year. The exact requirement depends on the relevant state building regulations and on the building permit for your property.

Q: What happens if a damper no longer closes?

We document the finding and report it to you immediately. The repair itself is the responsibility of the specialist contractor for the damper; we make sure the mechanism is clear and clean.

A fire damper blocked by deposits will not close in an emergency. We make it accessible, clean it and test its function.

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Technician testing the release mechanism of a fire damper inside an opened duct

In detail

Fire damper and smoke extract cleaning

Fire dampers are safety components. In the event of a fire, they are designed to close and stop fire and smoke spreading through the building via the ductwork.

In practice, many dampers sit behind access panels that nobody has opened for years. Deposits block the mechanism, release devices stick, springs become clogged. In an emergency, the damper then fails to close.

We make the dampers accessible, clean the casing and mechanism and then test their function. The results are documented.

Frequently asked questions