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

XPS

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

detailing accessories
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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/UF

Ground Supported and Suspended Floors

Applications:Floor / Solid & Suspended

Thin-R XT-UF

XT/UF

The floor in any building is an area of considerable downward heat loss when not properly insulated. XT/UF will significantly improve the U-value of new and existing floors.

Thin-R Underfloor XT/UF is lightweight, easy to install and combines high compressive strength with low thermal conductivity, providing a high performance solution for floor insulation.

UF Hollow Core

Typical U-Values

U-Value calculations to EN ISO:6946 for UK
XT/UF Insulation for Ground Supported Slab

Perimeter/Area Ratio 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 Target U-Value
Thickness (mm) 25 40 40 50 50 55 60 60 60 0.25
Thickness (mm) 30 50 60 60 70 70 70 70 70 0.22
Thickness (mm) 40 60 60 70 75 75 80 80 80 0.20
Thickness (mm) 70 90 100 110 110 110 120 120 120 0.15

Typical U-Values

U-Value calculations to EN ISO:6946 for ROI
XT/UF Insulation for Ground Supported Slab

Perimeter/Area Ratio 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 Target U-Value
Thickness (mm) 30 45 50 55 60 60 60 65 65 0.25
Thickness (mm) 40 55 60 65 70 70 75 75 75 0.22
Thickness (mm) 50 65 70 75 80 80 90 90 90 0.20
Thickness (mm) 80 100 110 110 120 120 120 125 125 0.15

U-Value calculations to EN ISO:6946 for UK
XT/UF Insulation for Beam & Block Suspended Floor

Perimeter/Area Ratio 0.5 0.6 0.7 0.8 0.9
Thickness
50mm 0.27 0.28 0.28 0.29 0.29
60mm 0.24 0.25 0.25 0.25 0.26
75mm 0.21 0.21 0.21 0.22 0.22
80mm 0.20 0.20 0.20 0.21 0.21
100mm 0.17 0.17 0.17 0.17 0.18
120mm 0.14 0.15 0.15 0.15 0.15

U-Value calculations to EN ISO:6946 for ROI
XT/UF Insulation for Suspended Hollow Core Floor

Perimeter/Area Ratio 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.00 Target U-Value
Thickness (mm) 40 50 50 60 60 60 60 60 60 0.25
Thickness (mm) 50 60 70 70 70 70 70 75 75 0.22
Thickness (mm) 60 70 75 75 80 80 80 80 90 0.20
Thickness (mm) 90 100 110 110 120 120 120 120 120 0.15

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.

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Key Points

  • High Compressive Strength
  • Suitable for Underfloor Heating
  • Perimeter Strips for Robust Detailing
  • Reduced Insulation Thickness
  • 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.

Do you have any questions?

Talk to the team who can help you with your project

Our Technical Team provides technical services throughout our customer bases in Ireland & UK. Their experience and expertise has been built through our engagement and participation with the Irish construction industry for over 30 years.

Certified Technical Knowledge.

Solutions you can trust.

Call The Technical Team:
Tel +44 (0) 371 222 1055
Tel +353 (0) 46 906 6050

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