Fire Stopping & Penetration Sealing
Certified fire stopping and compartmentation systems for buildings, industrial plants and marine vessels. Code-compliant, inspected, documented across Denmark.
Protecting Buildings Through Compartmentation
Fire stopping - also called fire compartmentation - is the sealing
of penetrations, joints, and gaps in fire-rated walls, floors, and
ceilings to prevent the spread of fire, smoke, and toxic gases
between building compartments. Without it, the fire separation
built into the structure stops working.
In Denmark, fire stopping systems are tested to EN 1366-3 and
classified under EN 13501-2, in line with the Danish Building
Regulations (BR18) and applicable marine safety standards. Izotehas
installs fire stopping for cable penetrations, pipe penetrations,
duct penetrations, construction joints, and linear gaps - using
approved systems, installed to the manufacturer's specification and
documented on handover.
How We Install Fire Stopping
A proven four-step approach that ensures correct specification, tested materials, and certified installation for every fire stopping project.
Penetration Survey
We survey your building or vessel to catalog every penetration, joint, and gap that compromises fire compartmentation. Each item is photographed and classified by type, size, and fire rating requirement.
System Specification
For each penetration type - cable, pipe, duct, or construction joint we select the correct fire stopping system.
Certified Installation
Our trained installers apply fire stopping systems according to manufacturer specifications and EN standards. Every installation is a life-safety system - there is no room for shortcuts.
Inspection & Documentation
Every fire-stopped penetration is photographed and logged. You receive a complete fire stopping register with material certificates, installation records, and compliance documentation for building control and insurance.
Where Fire Stopping Matters
From hospitals to offshore platforms - fire stopping is legally required wherever fire compartmentation must be maintained between building zones or marine bulkheads.
Pipe Penetrations
Fire wraps, collars, and sealants for insulated and uninsulated pipes penetrating fire compartments.
Industrial Facilities
Fire stopping for pipe and cable penetrations in process plants and industrial buildings as part of broader insulation and cladding scopes.
Duct Penetrations
Fire dampers and fire-rated duct penetration seals for HVAC systems crossing compartment boundaries.
Certified Fire Stopping Across Denmark
Izotehas delivers fire stopping with certified materials, trained installers, and documentation that satisfies building control and insurance requirements.
EN 13501-2 Tested Systems
Every fire stopping product we install has been tested to DS/EN 13501-2. We never use uncertified materials or unapproved methods on life-safety installations.
Full Penetration Documentation
You receive location records, system details, and achieved fire ratings at handover.
Own Trained Installers
Fire stopping is installed by our own crew - not subcontracted. Our installers are trained on the specific systems we use.
Fire Stopping FAQ
What is fire stopping and why is it required?
Fire stopping is the sealing of penetrations, joints, and gaps in fire-rated walls, floors, and ceilings to prevent fire, smoke, and toxic gases from spreading between building compartments. In Denmark, fire stopping is required by the Danish Building Regulations (BR18) wherever fire-rated construction is penetrated. Failure to properly fire stop penetrations can invalidate the fire rating of the entire compartment wall or floor.
What fire resistance classifications do you work to?
We install fire stopping systems classified to DS/EN 13501-2, which covers fire resistance ratings for construction products. Common classifications we work to include EI 30, EI 60, EI 90, and EI 120 - depending on the building type and the fire compartmentation requirements specified by the structural engineer or fire consultant.
What types of penetrations does Izotehas fire stop?
We fire stop pipe and cable penetrations through fire-rated walls and floors, construction joints, and perimeter gaps. If you need fire stopping as part of a larger insulation scope, contact us to discuss what we can cover on your project.
Can you fire stop around existing services in occupied buildings?
Yes. We carry out fire stopping in occupied offices and production facilities - working around live services and coordinating with building management to minimise disruption.
How often should fire stopping be inspected?
Fire stopping should be inspected annually and after any maintenance work that creates new penetrations (cable additions, pipe modifications). Many insurance policies require documented fire stopping inspections.
Need Fire Stopping?
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