The best thermal insulation performance in our sandwich panel range — engineered for refrigerated transport and cold chain applications.
Product Overview
SKD FRP Sandwich Panels with PU Core combine a weather-resistant FRP gelcoat outer skin, a polyurethane (PU) foam core, and an FRP inner skin — a structure engineered specifically for applications where insulation efficiency is the top priority.
Among all core options in our Sandwich Panels range, PU Core delivers the best thermal insulation performance, making it the preferred choice for refrigerated truck bodies, cold chain logistics, and other temperature-sensitive environments.

How the Structure Improves Panel Performance

Product Specifications
Specification | Value |
Overall Thickness | Custom, made to order |
Panel Width | Sized to standard container dimensions — panels exceeding container dimensions cannot be shipped |
Core Density (Standard) | 40–45 kg/m³ |
Core Density (High-Strength) | 48–50 kg/m³ |
Warranty | 10–15 years, consistent with FRP Gelcoat Panels |
Core Material | Polyurethane (PU) foam |
Skin Material | FRP gelcoat (outer) + FRP (inner) |
Note on width and shipping
Panel width is determined by standard container dimensions for shipping purposes. Panels wider than standard container dimensions cannot be transported and are therefore not available. Contact our team to confirm the maximum width for your specific container type and shipping route.
Why PU Core
PU Core offers the best thermal insulation efficiency among all core options in our Sandwich Panels range. This makes it the preferred choice for applications where maintaining precise internal temperatures is critical — such as refrigerated truck bodies, where temperature stability directly affects cargo safety and compliance.
Beyond insulation, PU Core panels retain all the advantages of SKD’s FRP gelcoat technology: excellent weather resistance, moisture resistance, and long-term durability, backed by the same 10–15 year warranty as our standard gelcoat panels.
Applications
The PU Core Sandwich Panel is suited for maximum-insulation applications, including:Refrigerated Truck Bodies, Refrigerated Trailers, Refrigerated Containers, Cold Chain Logistics, Medical Transport, Modular Building Walls & Roof Panels, Cold Storage Walls & Panels, and other temperature-critical environments.



A: PU Core offers the best thermal insulation performance among our core options, making it the top choice where insulation efficiency is the priority. XPS Core offers solid insulation at a more cost-optimized price point. Contact our team to discuss which fits your project’s performance and budget needs.
A: Yes. Panel thickness is made to order based on your project’s insulation and structural requirements. Contact our team to discuss the right thickness for your application.
A: Yes. While PU Core is most commonly chosen for refrigerated transport and cold chain applications due to its insulation performance, it’s also used in other temperature-controlled environments where maximum insulation efficiency is a priority.
A: Yes. The FRP gelcoat outer and inner skins are backed by the same ASTM and SGS certification as our Gelcoat Panels line, since they’re built on the same FRP gelcoat technology.
A: To provide an accurate quotation, please share your required panel dimensions, thickness, quantity, application, and any specific performance requirements. Our team will recommend a suitable PU Core Sandwich Panel solution based on your project details.
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