Pre-insulated PIR Panels Duct
The duct system is fabricated from PIR (Polyisocyanurate) / PUR (Polyurethane) pre-insulated sandwich panels, composed of a rigid closed-cell foam core bonded on both sides with aluminum foil facing. These panels are designed to provide excellent thermal insulation, lightweight construction, and long-term durability for HVAC duct applications.
Material Properties:
- Closed-cell rigid PIR/PUR foam core
- CFC and HCFC-free
- Density: 45 ± 3 kg/m³
- Excellent thermal insulation performance
- Chemically and physiologically inert
- Resistant to mold, fungus, and vermin
- Non-fibrous and non-metabolizable
- Dimensionally stable under varying temperatures
- Panel Thickness (Typical):
- Air-conditioned areas: 20 mm
- Plant rooms: 20 mm
- Outdoor / weather-exposed areas: 20 mm (with additional protective coating if required)
- Facing:
- Both sides faced with aluminum foil (available in plain or embossed finish) to enhance vapor barrier properties and mechanical strength.
- Specifications
- Technical Datasheet
- Catalogue
Pearl Industries specializes in the production of high-performance PIR/PUR pre-insulated ducts, designed to deliver superior thermal efficiency and air distribution in modern HVAC systems. Each duct is fabricated using rigid polyisocyanurate (PIR) or polyurethane (PUR) foam panels, laminated on both sides with aluminum foil, forming a robust sandwich structure that ensures strength, insulation, and air-tightness.
Overview of Pearl Industries PIR/PUR Pre-Insulated Ducts
Key Features and Benefits
Outstanding Thermal Performance:
The PIR/PUR core provides excellent thermal insulation, reducing energy loss and improving system efficiency.
Lightweight and Easy to Install:
Compared to traditional galvanized sheet metal ducts, pre-insulated ducts are significantly lighter, simplifying handling, transportation, and installation.
Corrosion and Condensation Resistant:
The aluminum foil facings prevent corrosion and minimize condensation, ensuring long-term performance even in humid environments.
Durable and Low Maintenance:
The closed-cell foam structure resists moisture, fungus, and vermin, offering a long service life with minimal upkeep.
Clean and Hygienic Airflow:
The smooth internal surface promotes low air resistance and prevents dust accumulation, contributing to cleaner indoor air quality.
Versatile Fabrication:
Panels can be easily cut, shaped, and bonded to produce rectangular, circular, or custom-shaped ducts suitable for complex HVAC layouts.
Applications in HVAC Systems
Pearl Industries PIR/PUR pre-insulated duct systems are ideal for:
- Office buildings and commercial centers
- Industrial plants and warehouses
- Hospitals and laboratories
- Airports and transportation hubs
- Hotels and residential complexes
- Educational and public buildings
These ducts are engineered for both indoor and outdoor installations, maintaining reliable performance across a wide range of temperature and environmental conditions.
Pre-Insulated Aluminium Ductwork Panels
The ductwork is made of aluminium/polyisocyanurate (PIR) sandwich panels, consisting of an expanded rigid PIR foam board faced on both sides with aluminium foil.
Physical Characteristics
| Specification | Air-Conditioned Areas | Plant Rooms | Exposed to Weather |
| Panel Thickness | 20 MM | 20 MM | 20 MM |
| Foam Density | 45±3 kg/m³ | 45±3 kg/m³ | 45±3 kg/m³ |
| Aluminium Finish | Embossed | Embossed | Embossed |
Insulating Material
- Closed-cell rigid polyisocyanurate (PIR) foam
- CFC-free, density 42 – 48 Kg/m³
- Physiologically and chemically inert, insoluble, vermin-proof, fungus-proof, and non-metabolisable
Thermal & Physical Properties
- Thermal Conductivity: 0.021 W/m·K or better
- Water Absorption: Less than 0.5% after 24 hours immersion
- Vapour Barrier: Aluminium foil covering must remain intact after installation to ensure continuity
- Fire Classification: Class 0 (BS 476 Part 6 & 7)
Performance Range
- Operating Temperature: −35 °C to +110 °C (no measurable change in insulation or physical characteristics)
- Air Pressure Resistance: Up to 1750 Pa (no measurable change in insulation or physical characteristics)
Fabrication & Installation
- Ductwork plenums are to be fabricated strictly in accordance with the manufacturer’s requirements and using only approved materials and accessories.
- Ducts and plenums must be joined as per the manufacturer’s instructions.
- Maximum length of an individual duct: 4000 mm.
- Supports to be installed as per DW 144 and manufacturer’s requirements:
- 4000 mm max spacing for ducts ≤ 1200 × 1000 mm
- 2000 mm max spacing for ducts > 1200 × 1000 mm
PEARL-PIR
Technical Datasheet
PEARL-PIR
Product Catalogue
