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.

High Performance PIR Insulation

FR/MG

Applications: Roof / Flat

FR/MG

Xtratherm FR/MG is a high performance Polyisocyanurate product with mineral coated glass facers suitable for use below single ply fully adhered roof membranes, single ply waterproofing systems and partially bonded built-up felt.

Typical U-Values

FR/MG
FR/MG (mm)U-Value (W/m²K)
80mm0.27
90mm0.24
100mm0.22
120mm0.18
60+80 (140) mm0.16

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

  • Compatible with adhesively bonded single ply roofing membranes laid on mechanically fixed boards
  • High Thermal Performance

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: