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Firestopping and Compartmentation: What Building Managers Need to Know

  • Writer: Megan Walsh
    Megan Walsh
  • Jun 18
  • 2 min read


When it comes to fire safety, many people think first of alarms, extinguishers, and evacuation procedures. But just as vital — and often overlooked — is the role of passive fire protection, particularly compartmentation and firestopping.


Here’s what every building manager should know.



What is Compartmentation?:

Compartmentation is the principle of dividing a building into fire-resistant sections (or “compartments”) to prevent fire and smoke from spreading rapidly.

These compartments are typically formed using:

  • Fire-rated walls and floors

  • Fire doors

  • Ceilings with fire resistance

  • Protected service risers and voids


The goal? To contain fire at its origin, giving occupants more time to escape and firefighters more time to respond.

So Where Does Firestopping Come In?:

Firestopping is the method used to seal any gaps or penetrations in those fire-rated compartments. These gaps are often created where services pass through — such as:

  • Pipes

  • Cables

  • Ductwork


Without proper firestopping, a compartment’s integrity is broken, and fire can spread through voids and shafts in minutes.



Common Issues We See:

  • Missing or damaged firestopping around pipework

  • Unsealed cable trays or IT installations

  • DIY solutions using foam, mastic or materials not tested for fire resistance

  • Fire doors wedged open or improperly maintained


Even a small breach can compromise an entire compartment.



Why It Matters:

As a building manager, you’re responsible for ensuring your premises meet legal fire safety standards — including those set out in:

If your compartmentation isn’t effective, it can:

  • Invalidate fire risk assessments

  • Lead to enforcement action

  • Put lives at serious risk!



How R2R Can Help:

At R2R, we provide:

  • Detailed firestopping inspections

  • Compartmentation surveys

  • Certified installation and remedial works

  • Full photographic documentation and reporting


All work is carried out by trained professionals using tested systems, with traceable materials and full compliance to manufacturer guidelines.

Whether you manage a school, apartment block, or commercial premises — we’re here to keep your building safe from the inside out.



📩 Want to book a firestopping survey or check your compartmentation integrity? Get in touch with us today.






Five certification logos: R2R, BSC, BM Trada, UKAS, FIA. Colors include red, blue, black. Text includes certification titles and organizations.
Logos representing various accreditations, including R2R, Bluesky Certified Installer, BM TRADA Q-Mark Certification, UKAS Product Certification, and the Fire Industry Association.

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