Name: Pre-insulated PU Foam Panel Suppliers and Manufacturers - China Factory - UNT Duct
Brand: UNTDuct
SKU: 302355391

Thanks to its excellent products and quality services, UNT Duct is one of the leading pre-insulated pu foam panel manufacturers and suppliers in China. Welcome to buy the high quality and customized products from our factory. We will offer you the best service and fast delivery.

Pre-insulated PU Foam Panel

Pre-insulated PU Foam Panel adopts rigid polyurethane closed-cell foam core with double-sided aluminum foil facing. It features ultra-low thermal conductivity, lightweight structure, B1 fire resistance, excellent waterproof and sound insulation, widely used in HVAC, construction and cold chain insulation projects.

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)

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Product Structure and Base Material of Pre-insulated PU Foam Panel

The prefabricated PU polyurethane foam insulation board adopts a sandwich composite structure. The middle layer is a rigid polyurethane closed-cell foam core material, with double-sided composite aluminum foil, color steel plate or glass fiber protective facing layer. It is factory-integrated pre-manufactured without the need for secondary insulation construction on-site.

The standard density of the product core material reaches 55 kg/m³, and the closed-cell rate is higher than 95%. The dense and closed air pore structure can prevent air convection and water vapor penetration, providing structural considerations for insulation, moisture prevention and structural strength.

The facing layer and core material are formed by high-pressure compounding, with strong adhesion and not prone to delamination. It is resistant to aging and corrosion, and is suitable for various complex working conditions for long-term use.

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Mechanics and Waterproofing/Hygroscopic of Pre-insulated PU Foam Panel

The mechanical indicators are outstanding. The compressive strength is ≥ 200 kPa, and the vertical board surface tensile strength is ≥ 150 kPa. It can withstand regular construction foot traffic and external loads, and is not prone to indentation or damage.

The bond strength between the surface material and the core material is ≥ 60 N/cm. During transportation, cutting, and installation, there is no delamination or edge breakage.

Relying on a 95% or higher high closed-cell rate, the 96-hour water absorption rate of the board is ≤ 3%. Water vapor is difficult to penetrate the core material, eliminating the problems of moisture absorption, condensation, and mold growth, and ensuring no failure. It is particularly suitable for use in basements, roofs, cold chain cold storage facilities, and coastal high-humidity environments, providing both waterproof and vapor barrier functions.

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Fire Resistance Rating and Safety Environment of of Pre-insulated PU Foam Panel

The standard model can achieve a B1 level of flame retardancy, with an oxygen index of ≥ 30%. It will extinguish itself when exposed to fire and will not drip or release large amounts of toxic smoke, meeting the requirements of building fire protection regulations.

Customized modified formulas can be used to achieve higher fire resistance ratings, suitable for strict fire scenarios such as high-rise buildings and public venues.

The product uses environmentally friendly foaming raw materials and does not contain substances that damage the ozone layer such as Freon. The release of formaldehyde and harmful gases complies with national environmental protection standards. It has no odor or pollution, and can be safely used in enclosed indoor spaces, meeting the green building energy-saving acceptance standards.

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Why choose UNTDuct

UNT Pre-insulated Ductwork

Project Case of UNT Ductwork

PRE-INSULATED DUCT vs G.I. DUCTWORK

Metric	20mm PU Pre - Insulated Duct (with 0.08mm Alu. Foil, )	0.5mm G.I Duct + 30mm Rubber Plastic (40-90kg/m³)
Fire Safety	Compliant (Class 0/BS 476, AS 1530.3). Self-extinguishing PU core, low toxic smoke, non-combustible alu foil.	G.I non-combustible; rubber plastic fire-retardant but requires coating to meet strict codes.G.I
Thermal Insulation	Excellent. λ=0.020 W/m·K, no thermal bridging. 20mm integrated structure ensures consistent insulation.	Fair. λ=0.035 W/m·K, thermal bridging at G.I joints. 30mm insulation offset by metal conductivity.
Hygiene & Air Quality	Superior. Non-porous alu foil, smooth inner surface, moisture-resistant PU. Meets cleanroom/hospital standards.	Poor. Porous rubber plastic traps dust/mold; G.I-insulation gaps breed pathogens.
Lightweight	1.4-1.5 kg/m². Ultra-light, reduces structural load; ideal for retrofits/timber-framed buildings.	5.1–6.3 kg/m². Heavy G.I base + bulk insulation; requires reinforced supports.
Energy Efficiency	Excellent. 20–30% lower HVAC energy consumption. Minimizes heat gain/loss in conditioned air.	Low. 20–30% higher energy loss due to inferior insulation and thermal bridging.
Ease of Construction	Easy. Factory-prefabricated tongue-and-groove joints. No separate insulation step; 40–60% less labor time.	Complex. Two-step on-site process: G.I duct fabrication + rubber plastic wrapping. Labor-intensive, prone to gaps.
Quiet Operation	Good. PU core absorbs 10–15 dB airflow noise; alu foil dampens vibration.	Fair. Rubber plastic provides basic sound reduction, but G.I vibration and insulation gaps reduce efficiency.
Space Savings	Excellent. 20mm total thickness (all-in-one). Fits tight ceilings/retrofit cavities.	Poor. 30.5mm total thickness (0.5mm G.I + 30mm insulation). Bulky, requires larger installation space.
Environmental Friendliness	Balanced. CFC/HCFC-free PU, recyclable alu foil. 20–30-year lifespan; net carbon positive in 1–3 years.	Low. Rubber plastic non-recyclable; 10–15-year lifespan. Frequent replacement increases waste; higher energy emissions.
Air Leakage	Superior. ≤2% air leakage (EN 1507, AS/NZS 3660.1). Airtight factory joints + alu foil vapor barrier.	Poor. 5–10% air leakage. On-site sealing gaps; separate vapor barrier required.

Performance comparison based on UNT Duct product data and standard system configurations. Actual performance may vary depending on system design, installation method and project conditions.

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