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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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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High Performance rigid extruded polystryrene

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

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.

Superior Performance PIR Insulation

XO/PR

Applications: Roof / Pitched

XO/PR

XO/PR on sloped roofs (ventilated, hybrid or warm) provides the most efficient U-values with minimal intrusion into valuable living space. The roof construction is a critical element in the building fabric and is an area at high risk of heat loss. Using XO/PR will reduce heat loss while also delivering excellent thermal bridging details.

Warm Roof Construction is a particularly effective way of insulating complex roofs. Insulating above – or above and between – the roof timbers ensures that the structure is kept at or near the internal environment conditions, reducing thermal stress and condensation risk.

U-Value calculations to EN ISO:6946
XO/PR Insulation for Pitched Roof
Hybrid Roof

XtroLiner Thickness BetweenXtroLiner Thickness UnderRafter Centres 600mmRafter Centres 400mm
120mm25mm*0.160.17
120mm40mm*0.140.15
120mm60mm*0.120.13

*Insulation thickness only

U-Value calculations to EN ISO:6946
XO/PR Insulation for Pitched Roof
Warm Roof

XtroLiner Thickness BetweenXtroLiner Thickness OverRafter Centres 600mmRafter Centres 400mm
N/A100mm0.180.18
N/A120mm0.160.16
75mm75mm0.140.14
75mm100mm0.120.12

Product Downloads

Product Range

XtroLiner is a superior performance insulation with a lambda value of 0.021 Wm/K and a Euroclass C fire classification. It is faced with a robust PIR aluminium foil and is available with engineered jointing to deliver improved Thermal Bridging detailing.

Key Points

  • Reduces Intrusion into Living Area
  • Reduced Risk of Condensation
  • Robust Foil Facings
  • Lightweight and Easy to Install
  • Reduced Thermal Bridging

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

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