SOPRATHERM XR4000 is a high-performance PIR insulation board designed for building projects requiring excellent thermal efficiency. Formerly known as Celotex XR4000, this rigid polyisocyanurate insulation offers a thermal conductivity of 0.022 W/mK, helping reduce heat loss and improve building energy performance.

Featuring low-emissivity aluminium-composite foil facings on both sides, SOPRATHERM XR4000 PIR insulation boards provide effective thermal resistance in suitable building constructions. Available in thicknesses from 110mm to 200mm, these boards are suitable for projects requiring higher levels of insulation, subject to the design and specification of the complete building system.

Applications of SOPRATHERM XR4000 Insulation

SOPRATHERM XR4000 PIR boards can be used in compatible roof, wall and floor insulation systems. Their rigid structure and low thermal conductivity make them an option for new-build developments, refurbishment projects and energy-efficiency improvements.

When selecting PIR insulation boards, consider the required thickness, thermal performance, available installation space and the intended application. Always check the manufacturer's technical datasheet and installation guidance to ensure the product meets the requirements of your project and applicable UK Building Regulations.