Unilin XT/TL 74.5mm Insulated Plasterboard

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

The 74.5mm Thin-R Thermal Liner XT/TL Insulated Plasterboard (Dot & Dab) combines a Unilin 65mm PIR insulation core with two composite kraft facings bonded to 9.5mm tapered edge plasterboard using a proprietary adhesive system.

Engineered for internal wall installations, this product features an integral vapour control layer within its composite kraft facing to minimise condensation risk. It delivers comprehensive thermal insulation and drylining performance in a single application, making it an excellent choice for both new builds and refurbishment work.

Properties

Brand: Unilin

Thickness: 74.5mm

Model: 74.5mm XT/TL Dot&Dab

Dimensions: 2400mm x 1200mm x 74.5mm

Compressive Strength: 150 kPa

Density: 30-32 Kg/m3

Material: PIR core ǀ Gypsum plasterboard

Profile: Tapered edge plasterboard

R-Value: 3.01 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

This Thermal Liner XT/TL system delivers high-performance thermal insulation and drylining in a single operation, making it the preferred choice for new construction and renovation projects. It enhances your home's energy efficiency whilst reducing heating costs and creating more comfortable living spaces.

The Insulation Board is chemically stable and manufactured with a blowing agent featuring zero Ozone Depletion Potential (ODP) and minimal Global Warming Potential (GWP), ensuring environmental responsibility.

Upgrading your home's energy performance offers 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 also delivers fire resistance benefits through continuous adhesive ribbons, particularly around vulnerable areas such as window and door openings.

What are Insulated Plasterboards?

The 74.5mm XT/TL insulated plasterboards (65mm insulation + 9.5mm plasterboard) are composite building materials that integrate plasterboard with an insulation layer, typically PIR-based. The insulation core bonds to the plasterboard, creating a unified panel that offers both thermal performance and a finished surface. These products are widely used in construction to enhance thermal and sound insulation, whilst streamlining and accelerating installation timescales. They work well in walls, ceilings, and floors, with various sizes and thicknesses available to meet specific building needs.

Info

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