35mm Unilin XT/CW Partial Fill Cavity Insulation

The 35mm Unilin XT/CW Partial Fill Cavity Wall (T&G) system combines engineered tongue and grooved joints with pre-formed corners to deliver seamless insulation performance and minimise thermal bridging.

Engineered specifically for traditional masonry walls, this 35mm cavity wall solution meets the highest thermal performance standards. It maintains a residual cavity whilst delivering outstanding protection from wind-driven rain penetration.

The XT/CW is available in both Square Edge and Tongue and Grooved versions. This 35mm Unilin XT/CW was formerly marketed as 35mm Xtratherm XT/CW.

Product Specification

Brand: Unilin / Xtratherm®

Thickness: 35mm

Model: 35mm XT/CW Cavity Wall Insulation Square Edge

Weight: 5.10kg

Dimensions: 1,200mm x 450mm x 35mm

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: 1.59 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 Advantages of 35mm XT/CW Partial Fill:

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

Info

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