70mm Unilin XT/CW Partial Fill Cavity Insulation

The 70mm Unilin XT/CW Partial Fill Cavity Wall insulation system features engineered tongue and groove joints with pre-formed corners to deliver continuous thermal performance and reduce thermal bridging effects.

Engineered specifically for traditional masonry wall applications, this 70mm cavity board meets rigorous thermal performance standards. The system maintains a residual cavity whilst delivering superior thermal resistance and reliable protection against wind-driven rain penetration.

The XT/CW range is supplied in both Square Edge and Tongue and Groove options. This 70mm Unilin XT/CW was previously marketed as 70mm Xtratherm XT/CW.

Product Specification

Brand: Unilin / Xtratherm®

Thickness: 70mm

Model: 70mm XT/CW Cavity Wall Insulation Tongue & Groove

Weight: 6.80kg

Dimensions: 1,200mm x 450mm x 70mm

Density: 30Kg/m3

Length: 1200mm

Width: 450mm

Board Coverage: 0.54 m²

Pack Coverage: 3.24 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

Key Benefits of 70mm XT/CW Partial Fill Insulation:

1. Robust tongue and groove joint system for secure installation.
2. Integrated corner panels and cavity closers reduce thermal bridging.
3. Preserves adequate cavity space for effective moisture management.
4. Suitable for all exposure conditions without restrictions.
5. Low emissivity foil facings enhance cavity insulation performance.

Information

Browse our complete Unilin range and refine by thickness or coverage area using the filters. For product suitability advice or bulk quotations, contact us on +4402038839057, email sales@insulationbee, or use our Live Chat service for competitive UK insulation pricing.