75mm Unilin Xtroliner XO/UF PIR Floor Insulation Board performs exceptionally well when installed beneath flooring. With its PIR core, this product delivers outstanding floor insulation performance, featuring an impressive thermal conductivity rating of just 0.021 W/mK. Floors are typically responsible for considerable heat loss through the building envelope when they lack proper insulation.
Installing 75mm XO/UF Underfloor insulation significantly improves the U-Value of both existing and new floor constructions. The product combines lightweight handling with simple installation, whilst maintaining excellent compressive strength and low thermal conductivity. These qualities make it an ideal choice for achieving superior floor insulation results.
Brand: Unilin
Model: 75mm XO/UF Underfloor
Thickness: 75mm
Length: 2400mm
Width: 1200mm
Pack Coverage: 11.52m2
Dimensions: 2,400mm x 1,200mm x 75mm
Compressive Strength: 150 (kPa)
Material: PIR Insulation (polyisocyanurate)
Inner facing: Foil Facing
Outer facing: Foil Facing
Finish: Robust textured foil
Profile: Square Edge
R-Value: 3.55m2K/W
Thermal Conductivity: 0.021W/mK
Fire Classification: Euroclass C-s2, d0
Applications: Floors ǀ Underfloor Heating
Vapour Control Layer: Yes
Features: Improved Performance ǀ Durable
Manufacturer: Unilin Xtroliner®
Thermal Bridging takes place within limited zones where insulation is notably diminished in comparison to the surrounding element. These occurrences can be classified as 'Repeating,' 'Random,' or 'Non-Repeating.'
Thermal bridges are evaluated using a linear thermal transmittance measurement known as PSI (Ψ), expressed in W/mK. SAP serves as the software application employed to determine a building's energy rating. Within this software, the impact of Thermal Bridging at intersections is represented by a 'Y-Value.'
The 75mm Unilin XO/UF represents one of the most effective solutions for floor insulation. It delivers the strength and thermal performance needed to achieve the demanding U-Values required under current Building Regulations.
Explore our full range of Unilin products and refine your selection by thickness or coverage using the filters on the left. For advice on product suitability for your specific project or to request a bulk discount quotation, please contact us on +4402038839057, email sales@insulationbee.co.uk or use our Live Chat service – we offer competitive UK Insulation board pricing.













