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Full Fill Built-in Insulation System Continuous wall insulation system that delivers ultimate thermal performance with the added assurance of protection from wind driven rain.
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The Xi products have been developed to deliver the U-value requirements to meet Passive standards. It’s no longer just about U-values: how the system builds, how it interconnects at junctions and how it is witnessed and confirmed on site, are all equally important facets.
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Xtratherm offer an extensive range of technically enhanced rigid insulation products for commercial and industrial projects
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Tapered Roofing System
The XtraFall system provides a high performance precision solution to thermal insulation and water drainage on at roofs.
The Xtratherm range of high performance insulation boards provides the ideal technically advanced solution for flat roof projects.
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PLATINUM SERVICE for Developers
Developers and their design and certifcation team can rely on the expertise and professional support of the whole Xtratherm Team - it is not just about buying insulation products.
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Full Fill Built-in Insulation System
Continuous wall insulation system that delivers ultimate thermal performance with the added assurance of protection from wind driven rain.
Technical Support & Resources
At Xtratherm Xi Academy we understand the importance of giving our customers the best technical advice. The Xi Academy is open to everyone from Builders and Architects to Secondary Education Pupils to learn about advanced building methods, insulation and sustainability.
PIR Insulation
XT/CW (T&G)
Applications: Wall / Partial
XT/CW (T&G)
Thin-R Partial Fill Cavity Wall XT/CW (T&G) builds to a system thanks to it’s engineered tongue and grooved joints and pre-formed corners, ensuring insulation continuity and minimisation of thermal bridging.
XT/CW (T&G) for use in traditional masonry walls, builds to the highest thermal standards whilst maintaining a residual cavity, offering protection from wind driven rain.
U-Value calculations to EN ISO:6946
XT/CW (T&G) Cavity Wall Partial Fill
| Block Lambda | 40mm | 50mm | 60mm | 70mm | 80mm | 100mm |
|---|---|---|---|---|---|---|
| 0.11 | 0.28 | 0.25 | 0.22 | 0.20 | 0.19 | 0.16 |
| 0.15 | - | 0.26 | 0.23 | 0.21 | 0.19 | 0.16 |
| 0.46 | - | 0.28 | 0.25 | 0.22 | 0.20 | 0.17 |
| 1.13 | - | - | 0.26 | 0.23 | 0.21 | 0.18 |
U-Values achieved with additional Xtratherm XT/TL Thermal Liner
| Thickness | Block Lambda | Original U-Value Table 1 | Improved U-Value with XT/TL |
|---|---|---|---|
| 60mm | 0.11 | 0.22 | 0.16 |
| 70mm | 0.15 | 0.21 | 0.15 |
| 80mm | 0.46 | 0.20 | 0.15 |
| 100mm | 1.13 | 0.18 | 0.13 |
*XT/TL 50mm Thermal Liner consisting of 38mm PIR and 12.5mm plasterboard on adhesive dabs
Product Downloads
Product Range
Xtratherm Thin-R range is a high performance foil faced Polyisocyanurate (PIR) insulation with a certified thermal conductivity as Low as 0.022 W/mK. Thin-R is also available with engineered jointing to provide improved continuity and thermal bridging performance.
Key Points
- Robust Tongue & Groove Jointing
- Corner Panels & Cavity Closers: Reduced Thermal Bridging
- Clear Cavity Maintained
- No Exposure Restrictions
- Low Emissivity Foil Facings
Xtratherm reserves the right to change this information without notice.
Xtratherm accepts no responsibility for errors or omissions on the website.