
Batt & Mastic Fire Stopping
Fire-rated sealing systems for service penetrations, wall interfaces and compartment lines.
- Coated batt systems
- Intumescent mastic
- As-installed records
INTUMEX LTD delivers fire stopping, compartmentation, cavity barrier systems, beam encasement, fire curtains and documentation-led remedial works for commercial and residential projects across the UK.


Focused services for commercial, residential, refurbishment and remedial environments. Built around practical site delivery and clear handover information.

Fire-rated sealing systems for service penetrations, wall interfaces and compartment lines.

External cavity barrier remediation and injection support for residential and mixed-use buildings.

Boarded beam protection using Glasroc and FireLine board systems where specified by the project team.

Installation support for fire curtain and smoke curtain systems, including Firefly systems where specified.

Sealing for pipework, cable routes and mixed services passing through fire-rated walls and floors.

Fire sealing around ductwork and mechanical services within commercial plant and riser areas.

Fire sealing to construction joints, masonry interfaces and compartmentation gaps.

Rockwool barrier and cavity systems installed where specified for compartmentation and fire spread control.
We work to project specification, manufacturer guidance and site requirements. Our focus is simple: clean installation, clear reporting and handover information that clients can rely on.
Compartmentation reviews, fire door surveys and planned remediation packages.
OneTrace, Bolster, Boris or AuditPro workflows where required by the client.
Insta360-style before and after records for remote review and location context.
RAMS, product sheets, photographic evidence and as-installed schedules.

Commercial passive fire protection is rarely one isolated task. We coordinate around ducts, pipes, steelwork, voids, services and access limitations.

Glasroc and FireLine board encasement works for protected steel beams and service interfaces, delivered with attention to detail and installation sequencing.
Firefly curtain works and Rockwool barrier systems are handled as specialist packages, integrated with compartment lines and surrounding construction details.

Selected site photography showing the type of technical work INTUMEX can deliver across commercial, residential and refurbishment environments.






INTUMEX LTD provides passive fire protection and specialist installation works for clients who need a reliable subcontractor with a professional attitude and clean documentation.
We do not present unverified accreditations. Formal schemes such as CHAS, Constructionline, FIRAS and BM TRADA are part of our planned development and will only be shown once formally obtained.
Our current strength is practical delivery: experienced site working, accurate photographic records and clear communication from enquiry through to handover.
Comfortable working around live programmes, access constraints and other trades.
Records are captured as work progresses, not reconstructed after the fact.
Quotations, variations and scope boundaries are kept straightforward.
Supporting commercial and residential projects across England and Wales.
Send us your drawings, photos, survey requirements or scope of works. We will review the information and respond with the next practical step.