The 80mm Unilin XT/CW Partial Fill Cavity Wall (T&G) system features engineered tongue and grooved joints with pre-formed corners. This construction delivers continuous insulation performance and reduces thermal bridging effectively.
Purpose-built for traditional masonry walls, the 80mm Unilin XT/CW Cavity Wall (T&G) system meets demanding thermal requirements. It delivers superior thermal performance whilst preserving a residual cavity, offering robust defence against wind-driven rain penetration.
Our XT/CW Is avaiable in Square Edge @ Tongue and Grooved versions. The 80mm Unilin XT/CW was previous known as 80mm Xtratherm XT/CW.
Brand: Unilin / Xtratherm®
Thickness: 80mm
Model: 80mm XT/CW Cavity Wall Insulation Square Edge
Weight: 11.67kg
Dimensions: 1,200mm x 450mm x 80mm
Density: 30Kg/m3
Length: 1200mm
Width: 450mm
Board Coverage: 0.54 m²
Pack Coverage: 2.7 m²
Material: Polyisocyanurate (PIR)
Profile: Square Edge
R-Value: 3.18 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
Explore our Unilin range and refine by thickness or coverage using the left-hand filters. For project suitability advice or bulk pricing enquiries, contact us on +4402038839057, email sales@insulationbee, or use Live Chat for competitive UK Insulation pricing.











