122.5mm Unilin Insulated Plasterboard XT/TL-MR

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

The 122.5mm XT/TL-MR Thin-R Thermal Liner (Moisture Resistant) combines a Unilin 110mm PIR insulation core with composite foil facing and 12.5mm tapered edge moisture resistant plasterboard. This insulated composite panel works for internal walls, sloped roofs, and ceilings using either Dot&Dab or mechanical fixing methods.

The 122.5mm Insulated Plasterboard integrates rigid PIR foam insulation bonded to 12.5mm green moisture resistant plasterboard. This construction suits internal building areas with high humidity, accepting plaster finishes or direct decoration.

Properties

Brand: Unilin

Thickness: 122.5mm overall

Model: 122.5mm XT/TL-MR Moisture Resistant

Dimensions: 2,400mm x 1,200mm x 122.5 mm

Compressive Strength: 150 kPa

Density: 30-32 Kg/m3

Length: 2400mm

Material: PIR core ǀ Moisture Resistant plasterboard

Profile: Moisture Tapered edge plasterboard

R-Value:5.06 m2K/W

Thermal Conductivity: 0.022 W/mk

Vapour Resistivity: 100 MNs/gm

Finish: Composite Kraft facings

Reaction To Fire: Euroclass B s1 d0

Applications: internal walls, sloped roofs, ceilings, Kitchen & Bathrooms.

Vapour Control Layer: Yes, build in

Fixing method: Mechanically Fixed | Dot and Dab

Features: Moisture Resistant Insulated Plasterboard

Type: Thermal Liner®

Flexural Strength: ≥160N Transverse / ≥400N Longitudinal

Benefits

1. Insulation & Drylining in one application
2. Provides effective vapour control layer
3. Reduced insulation thickness
4. Suitable for a variety of wall Insulation types

About

The 122.5mm Thermal Liner XT/TL-MR delivers comprehensive thermal insulation and drylining in a single installation step, making it ideal for new construction and renovation work. This solution enhances your home's energy performance whilst reducing heating expenses and creating more comfortable indoor spaces.

The 122.5mm 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 efficiency offers substantial advantages, including lower utility bills and enhanced comfort levels. The Unilin XT/TL-MR Thermal Liner represents an efficient solution for achieving superior energy performance in your property.

The PIR board delivers fire resistance through continuous adhesive ribbons, particularly around vulnerable areas like window and door openings.

What are Insulated Plasterboards?

The 122.5mm XT/TL-MR insulated plasterboards (110mm insulation + 12.5mm moisture plasterboard) combine plasterboard with an integrated insulation layer, typically PIR-based. The insulation bonds directly to the plasterboard, creating a unified panel offering both thermal performance and finished surfaces. These panels enhance thermal and sound insulation whilst streamlining installation. Commonly applied in walls, ceilings, and floors, they come in various dimensions and thicknesses to meet specific building needs.

Info

Browse our Unilin range and filter by thickness or coverage on the left-hand side. For product suitability advice or bulk quotations, contact us on +4402038839057, email sales@insulationbee or use Live Chat - Lowest UK Insulation Prices.