57.5mm Unilin XT/TL Insulated Plasterboard

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

57.5mm Thin-R Thermal Liner XT/TL Insulated Plasterboard combines a 45mm PIR insulation core with 12.5mm tapered edge plasterboard, bonded together using a proprietary adhesive system. The composite kraft facings on both sides feature an integral vapour control layer designed to minimise condensation risk.

Purpose-built for internal wall applications, this insulated plasterboard delivers comprehensive thermal performance alongside drylining in a single installation step. It suits both new builds and renovation projects where energy efficiency and speed of installation are priorities.

Properties

Brand: Unilin

Thickness: 57.5mm

Model: 57.5mm XT/TL Dot&Dab

Dimensions: 2400mm x 1200mm x 57.5mm

Compressive Strength: 150 kPa

Density: 30-32 Kg/m3

Material: PIR core ǀ Gypsum plasterboard

Profile: Tapered edge plasterboard

R-Value: 2.10 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 ǀ Pitched and flat roofs

Vapour Control Layer: Yes, build in

Fixing method: Adhesive bonding

Features: PIR Thermal Insulated Plasterboard

Type: Thermal Liner®

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

Benefits

1. Combines insulation and drylining in one step
2. Integrated vapour control layer for condensation prevention
3. Achieves high thermal performance with minimal thickness
4. Versatile solution for diverse wall insulation requirements

About

The 57.5mm Thermal Liner XT/TL delivers robust thermal insulation and drylining simultaneously, making it an excellent choice for newbuild and refurbishment schemes. This product enhances your home's energy efficiency, reducing heating costs and creating a more comfortable living environment.

Manufactured with environmentally responsible practices, this insulation board uses a blowing agent with zero Ozone Depletion Potential (ODP) and minimal Global Warming Potential (GWP), ensuring chemical inertness and safety throughout its lifespan.

The continuous adhesive ribbons provide fire resistance, particularly around vulnerable areas such as window and door openings. This PIR board represents a practical investment in your property's thermal performance and long-term comfort.

What are Insulated Plasterboards?

Insulated plasterboards combine a plasterboard layer with integrated insulation, typically PIR-based, to create a single multi-functional panel. The 57.5mm XT/TL variant consists of 45mm insulation bonded to 12.5mm plasterboard, delivering both thermal performance and finished surfaces. These panels streamline construction timescales whilst improving thermal and sound insulation properties. Commonly installed in walls, ceilings, and floors, they are available in various thicknesses to meet specific building specifications.

Info

Browse our Unilin stock and refine results by thickness or coverage using the left-hand filters. For product suitability advice tailored to your project, or to request a quantity discount quotation, contact us on +4402038839057, email sales@insulationbee, or use Live Chat for the best UK insulation prices.