The 140mm Unilin Thin-R XT/UF PIR Floor Insulation Board is a rigid PIR insulation board engineered for floor construction applications. Contractors and installers favour this product for delivering performance comparable to premium alternatives such as Kingspan TF70 at a considerably lower cost.
Featuring a thermal conductivity of 0.022W/mK and compressive strength exceeding 150kPa, this 140mm floor insulation board provides outstanding thermal performance whilst maintaining structural stability under load. It represents an efficient and economical solution for floor insulation requirements.
Brand: Unilin Thin-R XT/UF
Thickness: 140mm
Length: 2400mm
Width: 1200mm
Overall Thickness: 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 60mm, 65mm, 70mm, 75mm, 80mm, 90mm, 100mm, 110mm, 120mm, 130mm, 140mm, 150mm, 160mm, 165mm
Maximum Board Weight: 0.45 kg/m²
Thermal Resistance: 0.68m²K/W
Thermal Conductivity: 0.022 W/mK
Compressive Strength: >150 kPa
Water Vapour Resistivity: >100 MNs/gm
Density (Foam Core): 30-32 kg/m³
Surface Spread of Flame: Class 1
Reaction to Fire: E
Finish: Aluminium Foil Facings
Applications: Ground Supported & Suspended Floors
ETA Notification: Yes
Features: Versatile | High-performance | Rigid
Floors with inadequate insulation contribute to significant thermal losses in buildings. The 140mm XT/UF Thin-R Underfloor Insulation effectively resolves this concern by substantially improving the U-Value performance of both new construction and retrofit floor applications.
The Unilin XT/UF 140mm board combines lightweight handling with straightforward installation. Its high compressive strength paired with low thermal conductivity makes it an excellent choice for achieving superior floor insulation board performance and durability.
Browse our full range of Unilin products and refine your selection by thickness or coverage using the filters on the left. For technical advice on product suitability for your project or to request a volume discount quotation, please contact us on +4402038839057, email sales@insulationbee, or use Live Chat - Lowest UK Insulation Prices.












