The Celotex XR4150 is a robust and reliable insulation board measuring 2.4m x 1.2m and boasting a thickness of 150mm. This high-quality product offers superior thermal performance, making it the ideal solution for your insulation needs in both walls and roofs. The XR4150s size and thickness ensure excellent coverage, while the boards easy installation process makes it a popular choice amongst builders. Additionally, the Celotex XR4150 is designed to resist moisture, enhancing its longevity and ensuring your project remains protected for longer.