MIDDLESEX LTD

Firestopping

Middlesex Firestopping delivers passive fire protection that maintains compartment integrity, safeguards structure and ensures full compliance with Building Regulations Part B. Our accredited in-house team provides firestopping as part of the Middlesex Dry Lining offer, giving clients a single accountable contractor for partitions, ceilings and fire protection. All installations are tested, traceable and fully documented to support Building Safety submissions and framework audit requirements.

Penetrations, cavity barriers and linear gap seals

We install certified firestopping systems to maintain compartment integrity around service penetrations and structural gaps, ensuring fire and smoke are contained within designed zones.

Design coordination: Details are reviewed pre-start to confirm tested systems and interface materials for each substrate and service type.

Execution: Installations are carried out by accredited operatives under direct supervision, with each penetration logged and photographed for traceability.

Quality assurance: Product data sheets, fire test evidence and inspection records are collated in a single digital QA pack.

Outcomes: Verified compliance with fire strategy drawings and clean sign-off at inspection.

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Fire-Rated Boarding and Cladding

We install high-performance fire-rated boards and encasements for steelwork, ductwork and walls to deliver structural protection and visual consistency.

Design and approval: Systems are reviewed against design intent and manufacturer guidance to confirm performance and aesthetic alignment.

Installation: Operatives use approved fixings and edge details to achieve both fire resistance and smooth finish ready for decoration.

Quality evidence: Each installation is recorded with photographs and batch data, forming part of the Building Safety evidence pack.

Outcomes: Reliable fire protection, clean finish quality and documented assurance for client records.

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Intumescent and cementitious coatings

We apply protective coatings to structural steel and critical components, providing insulation and strength retention during a fire event.

Preparation: Surfaces are grit blasted or mechanically prepared to ensure adhesion and even coating thickness.

Application: Materials are applied in controlled conditions, with wet and dry film thickness checks carried out and logged.

Certification: Product and test certificates are stored in the digital QA pack for audit and compliance.

Outcomes: Fully certified coating systems that achieve the required fire resistance period and extend the lifespan of structural elements.

Fire doors

We install, inspect and maintain certified fire doorsets for both new and existing buildings.

Installation: All door assemblies are fitted by accredited installers, with gaps, ironmongery and seals checked against manufacturer tolerances.

Documentation: Every component is recorded, including door leafs, frames, seals and hardware, with photographs and tags linking back to certification data.

Maintenance: For refurbishment and housing association clients, we carry out fire door inspections and remedial works, producing reports aligned with regulatory standards.

Outcomes: Compliant, fully traceable fire door installations ready for Building Safety and audit review.

Grit blasting

We provide surface preparation for structural steel and passive fire protection systems to ensure adhesion and coating performance.

Execution: Grit blasting is completed to the required surface profile, verified with on-site testing and inspection.

Integration: This service is scheduled alongside intumescent coating application to maintain continuity of quality and programme.

Documentation: Each area is logged with photographic records and inspection data for inclusion in the QA pack.

Outcomes: Improved coating performance, longer protection lifespan and a verified surface preparation record.

Core drilling

We provide precise, dust-controlled core drilling and reinstatement for fire-rated elements during mechanical and electrical installation.

Process: All penetrations are logged and sealed with approved firestopping compounds to maintain compartmentation and performance.

Evidence: Before-and-after photographs and reinstatement records are stored within the digital QA system.

Outcomes: Clean, certified reinstatement that preserves fire integrity and compliance throughout the project lifecycle.

Contact Us

Please feel free to get in contact with us through our form, or the below details.

Middlesex Limited
Darwin House
Bourne End Business Park
Cores End Road
Bourne End, SL8 5AS

​01895 238818
info@middlesexltd.co.uk

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