89.5mm Unilin Thin-R XT/TL-MF Insulated Drylining Board

Unilin Insulation | The new name for Xtratherm Insulation in the UK & Ireland.

The 89.5mm XT/TL-MF Thin-R Thermal Liner (Mechanically Fixed) combines an 80mm PIR insulation layer with composite foil facing bonded to 9.5mm tapered edge plasterboard. This composite panel delivers both thermal insulation and drylining in a single product, ideal for internal walls, sloped roofs, and ceilings where mechanical fixing is required.

The 89.5mm Insulated Plasterboard features composite foil facing on both sides with an integral vapour control layer built in. This design minimises condensation risk whilst delivering high thermal performance and drylining capability in a single operation, making it the ideal choice for new builds and renovation work.

Properties

Brand: Unilin

Thickness: 89.5mm overall

Model: 89.5mm XT/TL-MF Drylined

Dimensions: 2,400mm x 1,200mm x 89.5mm

Compressive Strength: 150 kPa

Density: 30-32 Kg/m3

Length: 2400mm

Material: PIR core ǀ Gypsum plasterboard

Profile: Tapered edge plasterboard

R-Value: 3.7 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

Benefits

1. Insulation & drylining delivered in one application
2. Integral vapour control layer for condensation protection
3. Thinner overall construction depth
4. Versatile for multiple wall insulation applications

About

The 89.5mm Thermal Liner XT/TL-MF delivers thermal insulation and drylining in one operation, offering a practical solution for newbuild and refurbishment projects. It enhances your home's energy efficiency whilst reducing energy costs and creating improved living spaces.

The 89.5mm Insulation Board is chemically inert and manufactured with a blowing agent featuring zero Ozone Depletion Potential (ODP) and low Global Warming Potential (GWP).

Upgrading your home's energy performance delivers substantial benefits, including lower utility bills and enhanced comfort. The Unilin XT/TL-MF Thermal Liner provides an effective pathway to achieving these improvements and creating a more energy-efficient property.

The PIR board also offers fire resistance through continuous adhesive ribbons, particularly around openings such as windows and doors.

What are Insulated Plasterboards?

The 89.5mm XT/TL-MF insulated plasterboards (80mm insulation + 9.5mm plasterboard) combine plasterboard with a PIR insulation layer bonded together to form a single, multi-functional panel. This integrated design provides thermal insulation and a finished surface in one product, streamlining installation and reducing labour time. Commonly used in walls, ceilings, and floors, these panels come in various sizes and thicknesses to meet different building specifications and improve both thermal and sound insulation performance.

Info

Browse our Unilin stock and filter by thickness or coverage on the left-hand side of the page. For advice on product suitability for your project or to request a quantity discount quotation, please call +4402038839057, email sales@insulationbee or use Live Chat - Lowest UK Insulation Prices.