25mm Unilin XT/CW Partial Fill Cavity Insulation

The 25mm Unilin Thin-R XT/CW Partial Fill Cavity Wall (T&G) system combines engineered tongue and grooved joints with pre-formed corners to deliver continuous insulation performance and reduced thermal bridging.

Engineered for traditional masonry walls, this 25mm cavity wall solution meets rigorous thermal performance standards. The system maintains a residual cavity whilst delivering superior thermal efficiency and robust protection from wind-driven rain penetration.

The XT/CW range is available in both Square Edge and Tongue and Grooved profiles. This 25mm Unilin XT/CW product was formerly marketed as 25mm Xtratherm XT/CW.

Product Specification

Brand: Unilin / Xtratherm®

Thickness: 25mm

Model: 25mm XT/CW Cavity Wall Insulation Square Edge

Weight: 11.97kg

Dimensions: 1,200mm x 450mm x 25mm

Density: 30Kg/m3

Length: 1200mm

Width: 450mm

Board Coverage: 0.54 m²

Pack Coverage: 10.80 m²

Material: Polyisocyanurate (PIR)

Profile: Square Edge

R-Value: 1.14 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 25mm XT/CW Partial Fill:

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

Info

Explore our comprehensive Unilin range and refine by thickness or coverage using the left-hand filters. For technical advice on product suitability, project specifications, or bulk pricing enquiries, contact our team on +4402038839057, email sales@insulationbee, or use Live Chat for competitive UK Insulation pricing.