
Fire Retardant PIR (Polyisocyanurate) Panels are insulated sandwich panels manufactured with a PIR foam core bonded between metal facings. As part of the broader category of Fire Rated Sandwich Panels, PIR panels provide an engineered balance between thermal efficiency and fire performance when compared to conventional PUR-based systems.
Commonly specified as Fire Rated PIR Panels in industrial and commercial projects, these systems are selected where insulation performance is required alongside improved fire characteristics within the building envelope.
How Fire Retardant PIR Panels Work
Fire Retardant PIR panels function as composite insulated building elements:
The PIR foam core reduces heat transfer and contributes to fire retardant behaviour compared to conventional PUR foam.
The metal facings provide structural rigidity and surface protection.
The jointing system connects panels to form a continuous insulated enclosure.
Controlled manufacturing ensures consistent core density and bonding quality.
Performance depends on panel thickness, installation detailing, structural design, and fire classification standards applicable to the project.
PIR Panel Variants
Mount Fire Retardant PIR Panels are available in configurations based on application needs:
| Variant | Primary Use | Key Functional Difference |
|---|---|---|
| PIR Roof Panel | Industrial & commercial roofing | Profiled for drainage and span performance |
| PIR Wall Panel | External & internal walling | Insulated vertical enclosure |
| PIR Hidden Tongue & Groove | Controlled environments | Concealed joint for flush finish |
| PIR Solar Profiled Roof Panel | Solar-ready roofing | Profile supports solar mounting compatibility |
Selection depends on structural requirements, fire performance expectations, and operational needs.
Attributes
Improved Fire Behaviour
PIR chemistry offers enhanced fire performance compared to standard PUR panels.
Low Thermal Conductivity
Supports thermal insulation across building envelopes.
Dimensional Stability Under Heat
PIR core demonstrates better structural stability at elevated temperatures compared to conventional PUR.
Lightweight Insulated Construction
Reduces structural load compared to conventional walling systems.
Applications

Industrial Buildings with Fire Safety Compliance Requirements
Suitable where enhanced fire performance is mandated.

Warehouses Storing Combustible or High-Value Goods
Helps improve passive fire safety of enclosure systems.

Manufacturing Plants & Process Areas
Used where fire-resistant insulation is a design consideration.

Cold Storage with Fire Performance Requirements
Combines thermal efficiency with improved fire behavior.

Data Centres & Utility Buildings
Supports fire-safe enclosure design with stable insulation performance.

Pharmaceutical & Chemical Facilities
Appropriate for controlled environments with strict safety norms.

Oil and Gas Facilities
Ensures energy-efficient operation in extreme temperatures.

Greenhouses
Provides thermal insulation to maintain optimal growing conditions for plants.
Why Mount Fire Retardant PIR Panels
Mount Roofing & Structures manufactures insulated panel systems designed to integrate with steel building solutions. Fire Retardant PIR panels are produced with controlled core density and metal facings to meet project-specific insulation and fire performance requirements.
Mount’s system-based approach allows coordination between:
Structural steel systems
Roofing and wall panel systems
Fastening and joint detailing
Panel selection and specification are aligned with structural and regulatory requirements.
What our client's say

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Frequently Asked Questions
PIR panels use polyisocyanurate foam, which offers improved fire behaviour compared to polyurethane (PUR) foam.
No insulation panel is completely fireproof. PIR panels are designed to exhibit improved fire performance compared to standard PUR panels.
They are used in industrial and commercial buildings where both insulation and enhanced fire characteristics are required.
Yes, specific variants are designed for roof and wall applications.
Thickness depends on thermal requirements, structural design, and project specifications.
They are installed using mechanical fastening systems similar to other insulated panels.
Yes, when designed with appropriate thickness and jointing systems.
Yes, profiled variants can be selected to support solar mounting integration.
Fire performance depends on core formulation, thickness, facing materials, joint detailing, and regulatory classification.
Selection depends on project-specific fire rating requirements; Rockwool panels are typically chosen where non-combustible core performance is required.





