Unilin Insulation | The new name for Xtratherm Insulation in the UK & Ireland.
The 37.5mm XT/TL-MF Thin-R Thermal Liner (Mechanically Fixed) features a Unilin 25mm PIR insulation layer bonded to 12.5mm tapered edge plasterboard with composite foil facing on both sides. This insulated composite panel delivers thermal performance and drylining capabilities for internal walls, sloped roofs, and ceilings in mechanically fixed applications only.
The composite foil facing incorporates an integral vapour control layer that minimises condensation risk. The XT/TL Thermal Liner combines high-performance thermal insulation with drylining in a single operation, making it an ideal choice for new builds and refurbishment work.
Brand: Unilin
Thickness: 37.5mm overall
Model: 37.5mm XT/TL-MF Drylined
Dimensions: 2,400mm x 1,200mm x 37.50mm
Compressive Strength: 150 kPa
Density: 30-32 Kg/m3
Length: 2400mm
Material: PIR core ǀ Gypsum plasterboard
Profile: Tapered edge plasterboard
R-Value: 1.20 m2K/W
Thermal Conductivity: 0.022 W/mk
Vapour Resistivity: 100 MNs/gm
Finish: Foil facing on both sides ǀ Composite Kraft facings
Reaction To Fire: Euroclass B s1 d0
Applications: internal walls, sloped roofs & ceilings - Mechanically Fixed Applications
Vapour Control Layer: Yes, build in
Fixing method: Mechanically Fixed
Features: PIR Thermal Insulated Plasterboard
Type: Thermal Liner®
Flexural Strength: ≥160N Transverse / ≥400N Longitudinal
The 37.5mm Thermal Liner XT/TL-MF delivers thermal insulation and drylining simultaneously, offering an efficient solution for new construction and refurbishment projects. This product enhances your home's energy performance, delivering benefits such as lower heating costs and improved comfort levels.
The Insulation Board is chemically stable and manufactured with a blowing agent featuring zero Ozone Depletion Potential (ODP) and minimal Global Warming Potential (GWP).
Upgrading your home's thermal efficiency provides substantial advantages, including reduced energy expenditure and enhanced living comfort. The Unilin XT/TL-MF Thermal Liner represents an effective approach to achieving improved energy efficiency in your property.
The PIR board delivers fire resistance through continuous adhesive ribbons, particularly around vulnerable areas such as window and door openings.
The 37.5mm XT/TL-MF insulated plasterboards (25mm insulation + 12.5mm plasterboard) combine plasterboard with a PIR insulation layer bonded into a single multi-functional panel. This integrated design provides both thermal performance and a finished surface in one product. These panels improve thermal and sound insulation whilst streamlining installation. Commonly applied in walls, ceilings, and floors, they are available in various sizes and thicknesses to meet diverse building specifications.
Browse our Unilin stock and filter by thickness or coverage on the left-hand side of the page. For guidance on product suitability for your project or to request a quantity discount quotation, please contact us by phone on +4402038839057, email sales@insulationbee or use Live Chat - Lowest UK Insulation Prices.













