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Fire Stopping

Fire Stopping

Passive fire protection that seals penetrations and prevents the spread of fire and smoke through your building's structure.

Contact Indigo 020 8681 1616
Accredited Passive Protection

Accredited Passive Protection

Prevents the spread of fire, smoke and toxic gases through structural breaches.

Regulation Aware

Regulation Aware

Specified with UK fire regulations and compartmentation requirements in mind.

Accredited Engineers

Accredited Engineers

Trained fire stopping engineers delivering tested and documented systems.

Standards & Accreditations

Delivered to recognised industry standards

BM TRADA SafeContractor ConstructionLine Gold

Comprehensive fire stopping solutions

Fire spreads fastest through the hidden gaps left by pipes, cables and ducts. Effective fire stopping restores the integrity of your building’s compartmentation — containing fire and smoke and buying vital time for evacuation. Our services cover:

  • Apertures & penetrations — sealing around pipes, cables and ducts
  • Linear gap sealing — structural gaps and movement joints
  • Fire-safe ducting and ventilation
  • Cavity fire barriers

Structural protection & fireproofing

Beyond sealing, we deliver structural fire protection to keep your building standing longer in a fire:

  • Intumescent fireproofing sprays for structural steelwork
  • Structural steel encapsulation with gypsum-based boards (up to 2 hours resistance)
  • Documented reinstatement works

Request a Fire Stopping Survey

Tell us about your building, location and the fire stopping work required. A member of the Indigo Systems team will review your enquiry and contact you to discuss the next steps.

    Fire stopping guides and London support

    Use these focused pages to understand survey and remedial fire stopping support in London.

    Service Evidence

    Related project and local support pages

    Use these links to move from service detail into real project examples and local coverage pages.

    Project

    St Martin’s NHS Hospital

    Life-safety and access works delivered across a live hospital environment with carefully phased work around clinical care.

    Local page

    Fire Stopping Berkshire

    Fire stopping and penetration sealing for Berkshire buildings, contractors and facilities teams.

    Local page

    Fire Stopping Essex

    Fire stopping and penetration sealing for Essex buildings, contractors and facilities teams.

    Local page

    Fire Stopping Kent

    Fire stopping and penetration sealing for Kent buildings, contractors and facilities teams.

    Local page

    Fire Stopping Surrey

    Fire stopping, penetration sealing and compartmentation support for buildings across Surrey.

    Passive Fire Protection

    Real fire stopping, not generic filler

    Fire stopping is about maintaining compartmentation where building services pass through fire-resisting walls and floors. The right solution depends on the substrate, service type, aperture size and tested system.

    Fire-rated batt and service penetrations
    Fire-stopping installation

    Fire-rated batt and service penetrations

    Coated mineral-wool batt is cut around pipework, ductwork, trays and cable routes to reinstate the fire resistance of the wall or floor.

    Correct treatment for pipe penetrations
    Pipe collars and batt systems

    Correct treatment for pipe penetrations

    Plastic and insulated pipes need the correct tested detail, including collars or wraps where required, not generic filler or cosmetic mastic.

    Sealed, photographed and recorded
    Mixed services and documentation

    Sealed, photographed and recorded

    A good fire-stopping package includes the install detail, photographic evidence and records that facilities teams can rely on later.

    What we check

    A proper fire-stopping package should cover more than the visible finish

    Service type: pipe, cable, tray, ductwork or mixed services.
    Wall or floor construction and the required fire-resistance period.
    Tested product system, installed to manufacturer guidance.
    Photographic evidence, location records and handover documentation.
    How We Work

    Our proven process

    Survey & Assessment

    We survey your building and assess fire compartment integrity.

    Specification & Planning

    A compliant fire stopping specification is prepared.

    Professional Installation

    Accredited engineers carry out the works, even in live buildings.

    Quality Checks

    All works are inspected, photographed and documented.

    Certification & Reporting

    You receive full certification and a detailed report.

    Ongoing Support

    We provide follow-up inspections and additional works as needed.

    FAQs

    Frequently asked questions

    Yes. We routinely deliver fire stopping in live, occupied environments with minimal disruption to daily operations.

    Yes. UK fire regulations require that all breaches in fire-rated walls and floors are correctly sealed to maintain compartmentation.

    Every job is documented, photographed and certified, giving you clear evidence of compliance.

    Fire stopping should be checked after any refurbishment or building works, and commercial buildings should undergo annual inspections.

    Yes — we repair and replace defective or failed fire stopping using fully approved, certified systems.

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    Contact Indigo

    Need support with fire, security or electrical systems?

    Speak to Indigo Systems about design, installation, maintenance or compliance support for your building across London and the South East.

    Contact Indigo 020 8681 1616