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.

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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

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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PLATINUM SERVICE for Self Builders

PLATINUM SERVICE for Self Builders

Our Platinum Service offers full technical support and advice, helping you to achieve a cost effective, passive
standard new home.

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CavityTherm

Full Fill Built-in Insulation System

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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Built-in Full Fill Wall

CT/PIR

Built-in Full Fill Wall

CT/PIR Flex
XPS

Extruded Polystyrene Insulation

High Performance rigid extruded polystryrene

XPS SL
XPS SL 5
XPS SL 7
XPS
Detailing Accessories

Xtratherm offers a cost effective solution for builders and specifiers for the closing of cavities around window and door openings, preventing cold bridging, damp penetration, air infiltration and condensation.

CavityTherm Accessories

Cavity Closers

Safe-R Close-R

Reveal Closers

Close-R
detailing accessories

Technical Support & Resources

Brochures
ACDs
Spec Clauses
CAD Files
BIM LIbrary
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NBS BIM Library
Packing Lists
Certifications
Publications
Health & Safety
CE Marking
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Thermal Bridging
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Gallery
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Videos
Xi Academy
Xi Academy Logo

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.

Xi Academy
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Xi Academy
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For Architects & Specifiers >
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Certifications

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CT/PIR BBA Certificate

SR/FB BBA Certificate

SR/RS BBA Certificate

SR/UF BBA Certificate

SR/PR BBA Certificate

SR/CW BBA Certificate

XT/PR BBA Certificate

XT/UF BBA Certificate

XT/CW and XT/CWP BBA Certificate

XT/TF BBA Certificate

FR/ALU BBA Certificate

FR/BGM BBA Certificate

FR/MG BBA Certificate

XO/PR BBA Certificate

XF/MG BBA Certificate

XO/FB BBA Certificate

XO/STP BBA Certificate

XT/TL BBA Certificate

TR/ALU BBA Certificate

TR/BGM BBA Certificate

TR/MG BBA Certificate

XO/UF BBA Certificate

XT/CW NSAI Certificate

XT/PR NSAI Certificate

XT/UF NSAI Certificate

XT/TL NSAI Certificate

XT/TL-MF NSAI Certificate

XT/TF NSAI Certificate

CT/PIR NSAI Certificate

XT/HYF NSAI Certificate

XT/CWP NSAI Certificate

SR/ST BBA Certificate

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Request a Call Back

All the members of our technical team are individually BBA accredited to help you reach your low energy goals. Fill out your details below to request a call back: