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.

> Find out more
right image

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.

> Find out more
right image

Xtratherm offer an extensive range of technically enhanced rigid insulation products for commercial and industrial projects

> Find out more
right image

Tapered Roofing System
The XtraFall system provides a high performance precision solution to thermal insulation and water drainage on at roofs.

> Find out more
right image

The Xtratherm range of high performance insulation boards provides the ideal technically advanced solution for flat roof projects.

> Find out more
right image

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.

> Find out more
right image
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.

> Visit cavitytherm.com

High Performance rigid extruded polystryrene
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.

Warm-R EPS 70

Warm-R EPS 70

The Xtratherm Warm-R & Warm-R Premium Insulation Boards consists of rigid polystyrene boards cut from moulded blocks of white EPS (Warm-R) or with grey graphite enhancement (Warm-R Premium). The boards are manufactured in square edge, T&G and shiplap jointing. Xtratherm Warm-R & Warm-R Premium Insulation Boards are installed during construction.

Product Downloads

Product Range

EPS is a high quality Polystyrene product. Our EPS products consists of rigid polystyrene boards cut from moulded blocks of standard EPS (Warm-R) or with graphite enhancement (Warm-R Premium). The boards are manufactured in square edge, T&G and shiplap jointing.
We have EPS products suitable for partial fill cavity wall and underfloor applications.

Xtratherm reserves the right to change this information without notice.
Xtratherm accepts no responsibility for errors or omissions on the website.

Request a callback

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: