The 45mm Unilin Thin-R XT/UF PIR Floor Insulation Board is a premium rigid PIR insulation solution engineered for floor construction applications. Contractors and installers favour this product for delivering thermal performance comparable to leading 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 45mm floor insulation board provides outstanding thermal performance with excellent load-bearing capacity. It represents a reliable and economical solution for achieving effective floor insulation across residential and commercial projects.
Brand: Unilin Thin-R XT/UF
Thickness: 45mm
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 ǀ High-performance ǀ Rigid
Floors that lack adequate thermal insulation result in significant heat loss within buildings. The 45mm XT/UF Thin-R Underfloor Insulation effectively resolves this concern by substantially improving the U-Value performance of both newly constructed and refurbished floors.
Unilin XT/UF combines lightweight construction with straightforward installation characteristics. The product delivers an exceptional balance of high compressive strength and low thermal conductivity, establishing it as the preferred choice for superior floor insulation board performance and durability.
Explore our comprehensive Unilin range and refine your selection by thickness or coverage using the filters on the left-hand side. For technical guidance on product suitability for your specific project or to request a volume discount quotation, contact us on +4402038839057, email sales@insulationbee, or use our Live Chat service - Lowest UK Insulation Prices.












