27.5mm Unilin XT/TL Insulated Plasterboard

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

27.5mm Thin-R Thermal Liner XT/TL Insulated Plasterboard combines a Unilin 15mm PIR insulation core with two composite kraft facings, bonded to 12.5mm tapered edge plasterboard using a proprietary adhesive system.

Engineered for internal wall applications, this composite panel features an integral vapour control layer on both sides to minimise condensation risk. The Thin-R Thermal Liner delivers comprehensive thermal insulation and drylining simultaneously, making it an excellent choice for new builds and refurbishment work.

Properties

Brand: Unilin

Thickness: 27.5mm overall

Model: 27.5mm XT/TL Dot&Dab

Dimensions: 2400mm x 1200mm x 27.50mm

Compressive Strength: 150 kPa

Density: 30-32 Kg/m3

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: 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. 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 27.5mm Thermal Liner XT/TL delivers thermal insulation and drylining in a single operation, making it the preferred choice for new construction and refurbishment schemes. This solution enhances your home's energy performance whilst reducing heating expenses and creating a more comfortable living environment.

This Insulation Board is chemically stable and safe in use, manufactured using a blowing agent with zero Ozone Depletion Potential (ODP) and minimal Global Warming Potential (GWP).

Upgrading your home's thermal performance delivers significant advantages, including lower utility bills and enhanced comfort levels. Thin-R Thermal Liner is an effective solution for achieving superior energy efficiency in your property.

The PIR board offers fire resistance benefits through continuous adhesive ribbons, particularly around vulnerable areas such as window and door openings.

What are Insulated Plasterboards?

The 27.5mm XT/TL insulated plasterboards (15mm insulation + 12.5mm plasterboard) are composite building materials that integrate plasterboard with an insulation layer, typically PIR-based. The insulation layer bonds to the plasterboard to form a single, multi-purpose panel delivering both thermal performance and a finished surface. These panels are widely used in construction to enhance thermal and sound insulation, whilst streamlining and accelerating installation. Common applications include walls, ceilings, and floors, with various sizes and thicknesses available to meet specific building needs.

Info

Browse our Unilin range and refine by thickness or coverage using the left-hand filters. For product suitability advice tailored to your project or to request a bulk discount quotation, contact us on +4402038839057, email sales@insulationbee or use Live Chat - Lowest UK Insulation Prices.