The 110mm Unilin Thin-R 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 brands such as Kingspan TF70 whilst offering superior value for money.
Featuring a thermal conductivity of 0.022W/mK and compressive strength exceeding 150kPa, this 110mm floor insulation board maintains structural stability under load whilst delivering outstanding thermal performance. It represents an efficient and economical solution for floor insulation requirements.
Brand: Unilin XT/UF
Thickness: 110mm
Length: 2400mm
Width: 1200mm
Available Thicknesses: 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 ǀ High-performance ǀ Rigid
Floors with inadequate insulation contribute to significant heat loss in buildings. The 110mm XT/UF Thin-R Underfloor Insulation effectively addresses this challenge by substantially improving the U-Value of both new construction and retrofit applications.
This Unilin XT/UF product combines lightweight construction with straightforward installation. The combination of high compressive strength and low thermal conductivity ensures optimal performance for demanding floor insulation board applications.
Browse our comprehensive Unilin range and refine by thickness or coverage using the filters on the left. For project-specific advice or bulk quotations, contact us on +4402038839057, email sales@insulationbee, or use Live Chat - Lowest UK Insulation Prices.












