Unilin Insulation | The new name for Xtratherm Insulation in the UK & Ireland.
The 24.5mm XT/TL-MF Thin-R Thermal Liner (Mechanically Fixed) combines a Unilin 15mm PIR insulation layer with a composite foil facing, bonded to 9.5mm tapered edge plasterboard. This composite panel delivers insulation and drylining in a single product, ideal for internal walls, sloped roofs, and ceilings where mechanical fixing is required.
The 24.5mm Insulated Plasterboard incorporates composite foil facing on both surfaces with an integrated vapour control layer, helping to minimise condensation risk. Designed for mechanical fixing applications, this Thermal Liner delivers substantial thermal performance and drylining capability in a single operation, making it the ideal choice for both new builds and renovation work.
Brand: Unilin
Thickness: 24.5mm overall
Model: 24.5mm XT/TL-MF Drylined
Dimensions: 2,400mm x 1,200mm x 24.50mm
Compressive Strength: 150 kPa
Density: 30-32 Kg/m3
Length: 2400mm
Material: PIR core ǀ Gypsum plasterboard
Profile: Tapered edge plasterboard
R-Value: 0.75 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 24.5mm Thermal Liner XT/TL-MF delivers thermal insulation and drylining in a single operation, offering an effective solution for new construction and refurbishment schemes. It enhances your property's energy efficiency with benefits including lower heating costs and improved comfort levels.
The 24.5mm Insulation Board is chemically stable and safe, manufactured using a blowing agent with zero Ozone Depletion Potential (ODP) and minimal Global Warming Potential (GWP).
Upgrading your home's thermal performance offers substantial advantages, from reduced energy bills to enhanced living comfort. The Unilin XT/TL-MF Thermal Liner represents a practical solution for achieving greater energy efficiency and sustainability.
The PIR board also delivers fire resistance benefits through continuous adhesive ribbons, particularly around vulnerable areas such as window and door openings.
The 24.5mm XT/TL-MF insulated plasterboards ( 15mm insulation + 9.5mm plasterboard ) combine plasterboard with an integrated insulation layer, typically PIR-based. This bonded construction creates a multi-purpose panel offering both thermal performance and a finished surface in one product. Installation is simplified and accelerated compared to traditional methods. These boards find widespread use in walls, ceilings, and floors, available in various sizes and thicknesses to match specific building needs and improve thermal and sound insulation.
Browse our Unilin range and refine by thickness or coverage using the filters on the left. For advice on product suitability for your project or to request a quantity discount quotation, contact us on +4402038839057 , email sales@insulationbee or use Live Chat - Lowest UK Insulation Prices.








