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PIR Insulation Air Duct Board

PIR Insulation Air Duct Board is essential high-performance elements for modern HVAC systems. Built with an aluminum foil–PIR foam sandwich, they replace traditional galvanized steel ducts with on-site insulation. Suitable for hotels, offices, airports, hospitals, and other commercial and public buildings.

Structure: Silver Aluminum/ PIR Foam/ Silver Aluminum
Size: 3950*1200*20mm
Foam Density: 50-55kg/m3
Aluminum Thickness: 0.06mm or 0.08mm
Aluminum Color: Silver
Packing: 10 sheets/ package
Loading Capacity: 710 sheets/ 40'HQ (packed with plastic bags)
660 sheets/ 40'HQ (packed with cardboard box)

Fire protection, durability and operation and maintenance costs of PIR Insulation Air Duct Board

Fire Safety

PIR foam core: Class B1 flame retardant; aluminium foil surface: A1 non-combustible. Low smoke output and no dripping while burning. Complies with BS 476 and EN 13501, ideal for high fire-risk sites: data centres, subways and hospitals.

Long Service Life

Strong corrosion resistance. 95% strength retained after 720 hours acid/alkali immersion; no rust or pulverisation. Designed service life: 20 years. Galvanized steel ducts rust easily (5–8 years lifespan); phenolic ducts crack within 3–5 years.

Lower O&M Costs

Built-in moisture and corrosion resistance; no yearly rust removal and repainting required. Annual maintenance cost equals only 30% of traditional ducts. Low air leakage lessens load on main units, cutting fan loss and maintenance frequency. Total life-cycle costs are reduced by 30%–40%.

Thermal Insulation and Physical Performance of PIR Insulation Air Duct Board

The industry-leading insulation capacity directly reduces HVAC energy consumption by approximately 25%.
Thermal conductivity λ = 0.022–0.024 W/m·K (at 10°C, EN 12667), superior to rock wool (0.040) and ordinary PU (0.026).
Thermal resistance R: 20 mm = 0.85, 30 mm = 1.25, 50 mm = 2.25 m²·K/W.
Example: 50 mm thick PIR-ALU duct, annual energy savings of approximately 22 kWh/㎡, 10,000㎡ project saves approximately 18,000 yuan in electricity annually.

Compressive strength: ≥ 150 kPa (10% deformation, EN 826), 20 mm thick can withstand ±500 Pa air pressure, meeting the requirements of medium and high pressure ducts.
Weight: approximately 1.2–1.5 kg/㎡ (20 mm), only 1/5 of traditional iron sheet ducts, reducing ceiling load and installation labor time by 30%+.
Size stability: deformation ≤ 3% at 70°C/90% humidity, no deformation or cracking during long-term use.