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TPO Laminated Sandwich Panel
Thickness: 50mm – 150mm
TPO layer: 1.2mm / 1.5mm / 2.0mm
width: 1000-1200mm or customer’s requirement
Product Introduce
TPO laminated sandwich panel is a composite building enclosure panel in which TPO waterproof membrane (Thermoplastic Polyolefin) is directly applied to the surface of a metal faced sandwich panel.
On the basis of traditional metal sandwich panels such as PU board, PIR board, and rock wool board, it adds the outermost TPO waterproof film layer, achieving the integration of the waterproof layer and the insulation layer.

| Level | Material | Function |
| Top layer | TPO waterproof membrane (1.2-2.0mm) | Waterproof, weather resistant, UV resistant |
| Upper steel plate | Color coated steel plate (galvanized/aluminum zinc coated) | Provides a rigid, supportive waterproof layer |
| Intermediate layer | Insulation core material (PU/PIR/rock wool) | Insulation, heat insulation, sound insulation |
| Bottom steel plate | Color coated steel plate | Bearing capacity, interior, and aesthetics |
TPO film is usually firmly bonded to steel plates through hot melt composite technology or bonding process, without delamination.
Product Specifications
| Item | Parameters |
| Product Name | TPO Film Sandwich Panel |
| Thickness | 50 ~ 150 mm |
| Width | 1000 / 1200 mm, Customer request |
| TPO membrane thickness | 1.2 / 1.5 / 2.0 mm |
| fire rating | A (rock wool core) / B1 (PIR core) |
| MOQ | 10 tons |
| Processing Service | Welding, Punching, Cutting, Bending, Decoiling |
| Payment Term | 30% +70% T/T,100% L/C at sight |
| Transport Package | Standard Seaworthy Packing |
Main features and advantages
Superior waterproof performance
- The top TPO film is made of thermoplastic material and can be seamlessly connected through hot air welding, completely eliminating the risk of leakage.
- The waterproof layer is integrated with the board to reduce the construction process.
Quick construction
- Prefabrication in the board factory and on-site hoisting can complete waterproofing and insulation.
- No need for additional installation of waterproofing membranes or on-site welding of base layers.
Energy saving insulation
- Using polyurethane (PU) or polyisocyanurate (PIR) core materials, the thermal conductivity is as low as 0.022 W/(m · K), and the energy-saving effect is significant.
- High density rock wool (density ≥ 120kg/m ³), Class A fire protection (GB 8624-2012), thermal conductivity ≤ 0.040W/(m · K), combined with TPO surface layer thermal reflectivity (≥ 85%), can reduce roof temperature by 10-15 ℃ in summer, and save more than 30% energy for air conditioning.
Long weather resistance life
- TPO membrane has the characteristics of * * -45 ℃ low-temperature bending without fracture * * (ASTM D746) and wind peel strength ≥ 10kPa (UL 580 Class 150), which can resist extreme weather such as typhoons and blizzards.
- TPO waterproof membrane is resistant to ultraviolet radiation, ozone, and chemical corrosion, with a service life of up to 25-30 years.
Environmentally friendly and pollution-free
- TPO membrane does not contain chlorides or plasticizers, meets green building material standards, and can be recycled and reused.
Strong system integrity
- It can be combined with roof lighting strips, gutter systems, pressure strips, and flashing nodes to form a complete waterproof system.
Application areas
Roofs of various industrial plants
Large scale warehousing and logistics center
Food and pharmaceutical factory building (clean roof)
Airport terminal, exhibition hall
Cold chain storage and constant temperature workshop
Our Certificates
Customer affirmation


Why choose us ?
We are an integrated industrial and trade company that can produce steel independently and reduce costs.
From raw materials to finished products, we control quality throughout the process to ensure that the products meet customer requirements.
The combination of production and sales confidentiality can respond to orders quickly and shorten delivery time.
One-stop service, from consultation to production, and finally to after-sales service, provides all-round support.
We are self-produced, reducing dependence on external price fluctuations. In the face of sudden price increases, we can still deliver quickly and on time.
For inventory steel, we can provide preferential prices.
Contact us
Factory: Binzhou City, Shandong Province, ChinaList item
Company: Erqi District, Zhengzhou City, Henan Province, China
E-mail: info04@wanzhisteel.com
WhatsApp: +86 18736065220
Website: https://wanzhisteels.com
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