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Pre-insulated PU Sheet

Pre-insulated PU Sheet is a high-performance HVAC composite panel with a closed-cell PU foam core (λ≤0.022W/m·K) and aluminum foil facings. It integrates insulation, structure & protection, featuring lightweight, airtight, moisture-proof & easy installation, ideal for energy-efficient duct systems.

Structure: Silver Aluminum/ PU Foam/ Silver Aluminum
Size: 4000*1200*20mm
Foam Density: 40-45kg/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)

Structural and Performance of Pre-insulated PU Sheet

1. Core Material:

Hard Polyurethane (PU) foam, density 40–50 kg/m³, closed-cell ratio ≥ 95%, thermal conductivity 0.018–0.022 W/(m・K).
Surface Layer: Double-sided composite aluminum foil (60 μm) or color steel plate, enhancing strength, moisture resistance and reflective insulation.
Specification: Thickness 10/15/20/25/30/40 mm; Standard plate 3950×1200 mm, customizable.

2. Thermal Performance (Core Advantage):
Thermal Conductivity: ≤ 0.022 W/(m・K), approximately half that of rock wool (0.040), 33% lower than EPS (0.033), and the thickness can be reduced by 30% - 50% with the same level of insulation.
Energy-saving Effect: Air duct heat loss ≤ 3% (traditional iron sheet + rock wool is 10% - 15%), system energy consumption reduced by 15% - 20%.
Operating Temperature: Stable from -40℃ to + 80℃, suitable for cold storage, high-temperature workshops, and other extreme environments.

Durability and Environmental of of Pre-insulated PU Sheet

1. Durability and Life Cycle Cost
Service life: 20–30 years (traditional iron sheet 15–20 years), aluminum foil anti-corrosion, PU anti-aging, no maintenance required.
Maintenance cost: No rust, no insulation detachment, the maintenance cost during the entire life cycle is reduced by over 80%.
Overall cost: Although the material price is slightly higher, the construction period is shortened, energy consumption is reduced, and maintenance costs are saved. The premium can be recovered in 2–3 years.

2. Environmental and Health Benefits
Low-carbon and energy-saving: Each 10,000 square meters of duct system can save approximately 250,000 kWh of electricity annually and reduce CO₂ emissions by about 200 tons.

Clean and non-toxic: Free of fiber dust and formaldehyde emissions, meeting the requirements for clean environments such as hospitals and food processing plants.

Pre-insulated PU Sheet vs Traditional Metal Duct

Comparison Item	Pre-insulated PU Sheet Duct	Traditional Galvanized Iron (GI) Duct
Core Material	Closed-cell PU foam (40–50kg/m³) + aluminum foil facing	Galvanized steel sheet (0.5–1.2mm) + separate glass wool/rock wool insulation
Thermal Conductivity	≤0.022 W/(m·K)	0.040–0.047 W/(m·K) (insulated)
Weight (20mm thickness)	1.2–1.5 kg/㎡ (total)	8–10 kg/㎡ (duct+insulation)
Air Leakage Rate	≤2% (EN 1507, Class C)	5%–10% (poorly sealed)
Installation Method	Dry assembly, adhesive joint, no welding	Welding/flanging + on-site insulation wrapping
Installation Period	40%–60% faster	Standard (base reference)
Energy Saving	15%–20% lower HVAC energy consumption	Base reference
Fire Rating	GB 8624 B1 (non-flammable)	A (non-combustible, metal only)
Service Life	20–30 years	15–20 years
Condensation Risk	Extremely low (integrated insulation)	High (if insulation gaps exist)
Cost (Lifecycle)	Higher material cost, lower labor/energy/maintenance cost	Lower material cost, higher labor/energy/maintenance cost