The Uncomfortable Question: Who Owns Your System’s Liability?

When a smoke ventilation system is modified, who is actually taking legal responsibility for how everything works together in an emergency? Under the Machinery Regulation 2023, modifying a system means inheriting accountability for its complete performance.

For anyone currently managing a public portfolio or commercial estate, there is an uncomfortable question that needs to be asked regarding your smoke ventilation projects:

Who is taking legal and operational responsibility for your system as a whole?

We aren’t talking about who stands behind the physical kit. We aren’t talking about who guarantees the neatness of the electrical wiring. We are asking who stands behind the actual, coordinated performance of everything working together under emergency conditions.

Under the Machinery Regulation 2023, this line of responsibility has become incredibly sharp. The law dictates that if you modify a system, you inherit the responsibility for how that entire system behaves.

Erasing the Grey Areas

On the vast majority of commercial refurbishments, system responsibility still sits in a dangerous, ambiguous grey area between various mechanical, electrical, and maintenance contractors. If a system fails to open correctly during a fire, contractors frequently point fingers at one another’s components.

That is exactly why we have positioned Kilpatrick Blane differently. When we deliver a WindowMaster system, we don’t just act as suppliers or installers. We act as the System Integrator.

This means we completely eliminate the grey areas by taking sole accountability for the entire lifecycle of the intervention:

  1. We validate the design: Ensuring the physical space matches the technical intent.
  2. We define the logic: Programming explicit, flawless cause-and-effect behaviours.
  3. We test the full system: Simulating real-world scenarios, not just component power-checks.
  4. We stand behind the performance: Providing a single, trusted point of contact.


By acting as your technical safety partner, we ensure there are no gaps and no ambiguity – just a safe and fully compliant system.

We’d love to work with you and add your building to our showcase.
Contact us now to discuss how we can help.

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