45mm Unilin XT/CW Partial Fill Cavity Insulation

The 45mm Unilin XT/CW Partial Fill Cavity Wall (T&G) system incorporates engineered tongue and grooved joints with pre-formed corners, delivering continuous insulation coverage and reduced thermal bridging.

Purpose-built for traditional masonry walls, this 45mm Unilin XT/CW Cavity Wall (T&G) system meets rigorous thermal performance standards. It delivers outstanding thermal efficiency whilst preserving a residual cavity space, offering superior defence against wind-driven rain penetration.

Our XT/CW Is avaiable in Square Edge @ Tongue and Grooved versions. The 45mm Unilin XT/CW was previous known as 45mm Xtratherm XT/CW.

Product Specification

Brand: Unilin / Xtratherm®

Thickness: 45mm

Model: 45mm XT/CW Cavity Wall Insulation Square Edge

Weight: 6.56kg

Dimensions: 1,200mm x 450mm x 45mm

Density: 30Kg/m3

Length: 1200mm

Width: 450mm

Board Coverage: 0.54 m²

Pack Coverage: 4.86 m²

Material: Polyisocyanurate (PIR)

Profile: Square Edge

R-Value: 2.05 m2K/W

Thermal Conductivity: 0.022 W/mk

Vapour Resistivity: 100 MNs/gm

Surface Spread of Flame: Class 1

Compressive Strength: >120kPa

Applications: Cavities ǀ Masonry Walls

Inner facing: Foil facing

Outer facing: Foil facing

BBA Certified: Yes (No. 08/4613)

Features: Lightweight ǀ Easy to handle and install

Important Features From Our 45mm XT/CW Partial Fill:

1. Robust tongue and groove jointing system.
2. Corner panels and cavity closers reduce thermal bridging.
3. Preserves residual cavity for optimal thermal performance.
4. Unrestricted exposure capability.
5. Low emissivity foil facings enhance Cavity insulation efficiency.

Info

Explore our Unilin range and refine by thickness or coverage using the filters on the left. For project-specific guidance or bulk quotations, contact us on +4402038839057, email sales@insulationbee, or use Live Chat for competitive UK Insulation pricing.