Introduction to Pre-insulated PIR Ductwork
Pre-insulated PIR (Polyisocyanurate) ductwork is a type of HVAC ducting system that comes pre-insulated with rigid PIR foam insulation. It is designed for efficient thermal performance, fire resistance, and energy conservation in heating, ventilation, and air conditioning (HVAC) applications.
Inner Liner: Typically made of galvanized steel, aluminum, or stainless steel for durability and air containment.
Insulation Layer: PIR foam, known for its excellent thermal insulation properties (low thermal conductivity) and fire resistance.
Outer Jacket: Often a protective layer of aluminum foil, PVC, or reinforced laminate for moisture and mechanical protection.
Panel Structure: Silver Alu. / Blue PIR Foam / Silver Alu. Foil
Foam Density: 52kg/Cbm
Panel Dimension: 3950mm*1200mm*20mm
Alu. Foil: 0.06mm (Embossed)
Packing: 10 Sheets/ Plastic Bag
Advantages of Pre-insulated PIR Ductwork
High Thermal Efficiency: PIR foam has one of the lowest thermal conductivities among insulation materials, reducing heat loss/gain.
Fire Resistance: PIR is inherently fire-retardant, meeting stringent fire safety standards (e.g., Euroclass B-s1,d0).
Lightweight & Easy Installation: Pre-fabricated sections reduce on-site labor and installation time.
Condensation Control: Prevents surface condensation due to effective insulation.
Low Smoke & Toxicity: Safer in case of fire compared to some other insulation materials.
Comparison with Other Insulated Ducts:
Better than mineral wool ducts: PIR offers higher insulation efficiency in thinner layers.
Superior to Phenolic foam ducts: PIR has better mechanical strength and moisture resistance.
More fire-resistant than EPS (Expanded Polystyrene) ducts.
Photos of Pre-insulated PIR ductwork panels
Project Case of Pre-insulated PIR ductwork
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