The Unilin Thin-R 35mm XT/UF PIR Floor Insulation Board is a high-performance rigid PIR insulation solution engineered for floor construction applications. This product delivers thermal and structural performance comparable to premium alternatives such as Kingspan TF70 whilst offering superior value for money.
Featuring a thermal conductivity of 0.022W/mK and compressive strength exceeding 150kPa, this 35mm floor insulation board maintains structural stability under load whilst delivering exceptional thermal performance. It represents an efficient and economical solution for floor insulation requirements.
Brand: Unilin XT/UF
Thickness: 35mm
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: 0.68 m²K/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
Uninsulated or poorly insulated floors contribute to significant thermal losses in buildings. The Unilin Thin-R 35mm XT/UF Underfloor Insulation effectively resolves this issue, substantially improving the U-Value performance of both new construction and retrofit floor applications.
This Unilin XT/UF product combines lightweight construction with straightforward installation. The combination of high compressive strength and low thermal conductivity ensures reliable performance, making it an excellent choice for demanding floor insulation board applications.
Browse our comprehensive Unilin range and refine by thickness or coverage area using the filters on the left. For technical advice regarding product suitability for your project or to request a volume discount quotation, contact us via telephone on +4402038839057, email sales@insulationbee, or use our Live Chat service - Lowest UK Insulation Prices.








