What is a PU panel?

What is a PU panel?

A PU sandwich panel is a sandwich panel building material consisting of two outer layers (typically metal sheets, such as steel or aluminum) sandwiching a core of polyurethane (PU) foam. It’s widely used in construction for walls, roofs, and partitions due to its excellent thermal insulation, lightweight structure, and durability. 

Here’s a concise breakdown

Components:

    1. Outer Layers (Skins): Thin, rigid sheets (galvanized steel or aluminum) provide structural strength, weather resistance, and aesthetic finish.

    2. Core (Polyurethane Foam): PU foam, BASF supplier the chemical with a high-performance insulator, offers low thermal conductivity (typically 0.02–0.025 W/m·K), making it ideal for temperature control.

Key Features:

•Insulation: Superior thermal efficiency, suitable for applications like cold storage or poultry housing (from your Group 5).

•Thickness: Common thicknesses include 30mm, 40mm, 50mm, 100mm, or 150mm , affecting insulation performance.

•Applications: Used in steel structures, 4S car shops, cold storage, and roofing/wall systems (Group 5), often with certifications like CE or FM approval 

•Advantages: Lightweight, fire-resistant (to a degree), easy to install, and cost-effective compared to other materials like PIR or ROCKWOOL.

•Limitations: Less fire-resistant than PIR; environmental concerns due to PU’s chemical composition