110mm SOPRATHERM XR4110 PIR Insulation Board (formerly Celotex XR4000) is a high-performance polyisocyanurate rigid insulation solution engineered for diverse construction applications. Delivering a thermal conductivity of 0.022 W/mK, this board provides superior thermal efficiency and contributes to reducing heat loss across building envelopes.
Manufactured by Soprema with aluminium foil facings on both sides, the 110mm SOPRATHERM insulation boards create an effective vapour control layer when properly installed. The product holds BBA certification (Certificate 25/7318) for pitched roof, dry lining, and floor insulation applications.
The 110mm SOPRATHERM board functions as a versatile multi-purpose insulation solution suitable for numerous construction scenarios. These rigid boards are straightforward to cut and fit on site. Standard applications include:
All applications listed are covered under BBA Certificate 25/7318, validating product suitability within defined construction systems when installed per manufacturer specifications.
SOPRATHERM XR4110 achieves Euroclass F classification under BS EN 13501-1 reaction to fire testing standards.
Under current UK Building Regulations on combustibility, this product cannot be used in the external walls of relevant buildings exceeding 11 metres in height.
SOPRATHERM PIR insulation boards must be specified, installed and detailed in line with:
Proper specification and installation guarantee the insulation performs optimally within the building structure and satisfies all regulatory requirements.
Explore our full range of Sopratherm insulation products. We deliver across the entire UK Mainland. For product suitability advice on your project or to request a bulk discount quotation, contact us on 02039519012 / 02038839057, email sales@insulationbee.co.uk or use Live Chat - Lowest UK Insulation Prices near me.








