XTRATHERM UK LTD

PARK ROAD
HOLMEWOOD INDUSTRIAL PARK
CHESTERFIELD
DERBYSHIRE S42 5UY

Tel: 0371 222 1033
Fax: 0371 222 1044

Company Logo

Suppliers of: dry lining insulation PIR Insulation boards sarking boards

Xtratherm PIR insulation is suitable for traditional block, dry lining,roofs and floors, timber frame or steel framed buildings .

Xtratherm PIR insulation, when built into cavity walls, dry lining, floors and roofs, delivers outstanding thermal performance even within traditional building methods. Excellent thickness to performance ratio coupled with enhanced mechanical jointing of wall, floor and roof insulation deliver zero-carbon U-values with the improved detailing required for better performing building fabric.

Cavity Wall Insulation.

Xtratherm Partial Fill cavity wall insulation is the best solution when designers/ regulations demand higher U-value performance in external masonry walls. Xtratherm Thin-R Cavity insulation boards achieve these higher standards whilst maintaining a residual cavity giving most effective protection in highly exposed areas of the country. The outstanding performance of Xtratherm Cavity Plus allows these goals to be achieved without a substantial increase in the overall wall thickness.

PIR Dry Lining Insulation Boards.

Whether you are upgrading an existing property or building new, the addition of an PIR insulated thermal dry lining to the inside of a wall, roof slope or ceiling will dramatically improve the energy efficiency standards in your home. Xtratherm insulated dry linings can be fixed in a number of ways, including mechanically fixing or adhesive systems. These include fixing to timber battens or framing and metal furring systems (XT/TL-MF). Or adhesively fixed using proprietary systems and traditional dot & dab bonding. (XT/TL)

Timber Fame Insulation.

Xtratherm’s Timber Frame Insulation Systems, brings Timber Framed wall insulation performance to new levels, surpassing regulation default values and aiming for those standards indicated for 2016 when Zero Carbon or passive homes will be required under the Building Regulations. The BBA certified PIR insulation offered by Xtratherm achieves U-values of around 0.13 W/m2K in standard timber frame sections.

Xtratherm Roof Insulation.

Using Xtratherm on sloped roof areas can provide the most efficient U-values with minimal intrusion into valuable living space. Whether ‘warm roof’, ‘ventilated’ or ‘hybrid’ construction is specified using Xtratherm XT/PR within the buildup will maximize the roofs U-value performance.

Xtratherm Walk On Loft Insulation.

Xtratherm Loft Walk-R is a laminate of high performance PIR insulation with tough moisture resistant chipboard that builds to allow safe access into insulated roof spaces whilst maintaining very high insulation values, and complying with health and safety guidelines.

Flat Roof Insulation.

The Xtratherm range of high performance insulation boards provides the ideal solution for flat roof projects and is available with a range of facing to suit most weather proofing systems.

  • Xtratherm FR-ALU foil faced boards are suitable for use below PVC, TPO or EPDM single ply roof membranes and loose laid ballasted roofing.
  • Xtratherm FR-BGM is manufactured to BS/IS EN 13165:2008 Thermal insulation products for buildings. A Rigid Polyurethane Foam (PUR) insulation available as a flat or tapered insulation board
  • Xtratherm FR-MG mineral coated glass faced boards are suitable for use below single ply fully adhered roof membranes, mechanically fixed single ply waterproofing systems and partially bonded built-up felt systems
  • Xtratherm FR-BG is faced with a fleece finished bitumen/glass facers and is suitable for use below partially bonded bitumen based built-up roofing systems
  • Xtratherm FR-TP is a composite foil faced insulation panel.

Floor Insulation.

The floor in any building is an area of considerable heat loss if it is not properly insulated. Xtratherm XT/UF or Hyfloor when installed within a floor structure, will significantly improve the U-value of new floors at reduced thickness that will tie in with block coursing.

These files are provided by the manufacturer. While Building Products Index takes every care to ensure the information is correct and up to date, we cannot be held liable for any out of date or incorrect information in them. Please check with the supplier before specifying or purchasing products.

Xtratherm Cavity Therm Traditional Build
BUILT-IN CAVITY FILL INSULATION

Published [17/10/16]File size [2691 KB]

Xtratherm CT PIR Traditional Cavity Walls
Built-in Insulation for Traditional Cavity Walls

Published [18/05/15]File size [2918 KB]

Xtratherm FR ALU Flat Roof Insulation
high performance PIR flat roof insulation

Published [18/05/15]File size [713 KB]

Xtratherm FR-BGM Flat Roof Insulation
Insulation for Partially or Fully Bonded, Torched-on, Built-up Bituminous Felt Systems

Published [18/05/15]File size [1070 KB]

Xtratherm FR-MG Flat Roof Insulation
Insulation for Single Ply Fully Adhered/ Partially Bonded Built-up Felt Systems and Mastic Asphalt

Published [18/05/15]File size [1090 KB]

Xtratherm FR-TP Flat Roof Insulation
Thermal Ply High Performance PIR and Plywood Composite for Flat Roofs

Published [18/05/15]File size [749 KB]

Xtratherm Partial Fill Cavity Insulation
Partial Fill Cavity Insulation

Published [28/11/16]File size [1059 KB]

Xtratherm Rainscreen Whitepaper UK
insulation for ventilated rainscreen cladding

Published [17/10/16]File size [4438 KB]

Xtratherm Residential Brochure
Xi cavity wall

Published [17/10/16]File size [3512 KB]

Xtratherm Safe-R Soffit Plus Board SR/STP
Insulation Composite for Structural Ceiling Applications

Published [18/05/15]File size [620 KB]

Xtratherm SR-CW Partial Fill Cavity Wall Insulation
Superior Performance Insulation

Published [18/05/15]File size [709 KB]

Xtratherm SR-FB Insulation for Steel & Timber Framing
Superior Performance Insulation

Published [18/05/15]File size [630 KB]

Xtratherm SR-PR Superior Insulation
Insulation for Pitched Roofs

Published [18/05/15]File size [615 KB]

Xtratherm SR-RS Superior Insulation
SR/RS Insulation for Rainscreen Application

Published [28/11/16]File size [706 KB]

Xtratherm SR-TB Superior Wall Insulation
Insulation for Drylining Walls Dot & Dab

Published [18/05/15]File size [732 KB]

Xtratherm SR-TB-MF Superior Insulation for Walls
Insulation for Drylining Walls Mechanically Fixed to Battens

Published [18/05/15]File size [639 KB]

Xtratherm SR-UF Superior Insulation
Insulation for Ground Supported and Suspended Floors

Published [18/05/15]File size [668 KB]

Xtratherm The Guide to Part L
Insulation Boards

Published [17/10/16]File size [784 KB]

Xtratherm Thin R XT CW PIR Wall Insulation Board
High Performance PIR Wall Insulation Board

Published [28/11/16]File size [577 KB]

Xtratherm Thin R XT-PR PIR Roof Insulation Board
Insulation for Pitched Roofs

Published [18/05/15]File size [502 KB]

Xtratherm Thin R XT-SK PIR Roof Insulation Board
Insulation for Sarking (Warm Roof) Constructions with Engineered Jointing

Published [18/05/15]File size [545 KB]

Xtratherm Thin R XT-TF PIR Wall Insulation Board
Insulation for Timber Framed Walls

Published [18/05/15]File size [1023 KB]

Xtratherm Thin R XT-TL Wall Insulation Board
Insulation for Drylining Walls Fixed with Adhesive Dabs

Published [18/05/15]File size [553 KB]

Xtratherm Thin R XT-TL-MF
Insulation for Drylining Walls Mechanically Fixed

Published [18/05/15]File size [544 KB]

Xtratherm Thin R XT-UF PIR Floor Insulation Board
Insulation for Ground Supported and Suspended Floors

Published [18/05/15]File size [525 KB]

Xtratherm Thin R-XT CWP
Extra Performance Cavity-Plus Insulation Board

Published [18/05/15]File size [521 KB]

Xtratherm Thin R-XT-Walk-R
Insulated Loft Decking

Published [18/05/15]File size [467 KB]

Xtratherm Thin-R-XT-HYF
High Performance PIR Floor Insulation Board

Published [18/05/15]File size [552 KB]

Xtratherm TR BGM Tapered Roof Solutions
Tapered Insulation for Partially Bonded, Torched-on, Built-up Bituminous Felt Systems

Published [18/05/15]File size [584 KB]

Xtratherm TR-ALU Tapered Roof Insulation
Tapered Insulation for Mechanically Fixed Single Ply Waterproofing Systems

Published [18/05/15]File size [548 KB]

Xtratherm TR-MG Tapered Roof Insulation
Insulation for Single Ply Fully Adhered/ Partially Bonded Built-up Felt Systems and Mastic Asphalt

Published [18/05/15]File size [847 KB]

Xtratherm UK Drylining Guide 11.3
XTRATHERM Guide to insulation for dry lining. Thermal Insulated Plaster boards and Plasterboards.

Published [17/10/16]File size [773 KB]

Xtratherm Warm R EWB EPSP Wall Insulation
External wall insulation board

Published [18/05/15]File size [1092 KB]

Xtratherm XO RS PIR Insulation
Xtratherm Rainscreen board

Published [18/05/15]File size [1059 KB]

Xtratherm XO-CW PIR Insulation
Xtratherm Partial Fill Cavity

Published [18/05/15]File size [1053 KB]

Xtratherm XO-ST PIR Insulation
Xtratherm Soffit Board

Published [18/05/15]File size [1631 KB]

Xtratherm XO-UF PIR Insulation
Xtratherm Floors: Solid & Suspended Systems

Published [18/05/15]File size [1610 KB]

Xtratherm XtroLiner XO-FB PIR Insulation
Xtratherm Walls: Framing For Steel & Timber

Published [18/05/15]File size [1553 KB]

Xtratherm XtroLiner XO-PR PIR Insulation
Xtratherm Pitched Roof Insulation

Published [18/05/15]File size [1527 KB]

Xtratherm XtroLiner XO-STP PIR Insulation
Xtratherm Soffit Plus Board

Published [18/05/15]File size [1284 KB]

BOARDS AGREMENT CERTIFICATE HOLDERS .
BOARDS Humidity Resistant .
BOARDS Thermal .
BOARDS Water Resistant .
CAVITY CLOSERS AGREMENT CERTIFICATE HOLDERS .
CAVITY CLOSERS Insulated .
CAVITY CLOSERS Insulated Custom Sizes
CAVITY CLOSERS Insulated Fire Resistant BS 476 Part 20: 30 Minutes
CAVITY WALL Insulation .
CAVITY WALL Insulation AGREMENT CERTIFICATE HOLDERS
CAVITY WALL Insulation BS 476:1971 Part 7
CAVITY WALL Insulation BS 476:1984 Part 4
CAVITY WALL Insulation BS EN 13501-1 Euroclass A1
CAVITY WALL Insulation Partial Fill
CAVITY WALL Insulation Boards AGREMENT CERTIFICATE HOLDERS
CAVITY WALL Insulation Boards BRE Green Guide A+ Rating
CAVITY WALL Insulation Boards Built-In
CAVITY WALL Insulation Boards Class 0 Fire Rating
CLADDING INSULATION External Systems .
DRY LINING Boards .
DRY LINING Boards BRE Green Guide A+ Rating
DRY LINING Boards Insulating
DRY LINING Systems .
DRY LINING Timber Frame Walls .
FLOOR PANELS Thermal Insulating .See Also INSULATION BOARDS: Flooring
INSULATION BOARDS AGREMENT CERTIFICATE HOLDERS .
INSULATION BOARDS Agricultural Buildings .
INSULATION BOARDS Aluminium Foil Faced .
INSULATION BOARDS Basement Wall .
INSULATION BOARDS Bathroom .
INSULATION BOARDS Bitumen Coated .
INSULATION BOARDS BS EN 13165:2001 .
INSULATION BOARDS Built-Up Roofing .
INSULATION BOARDS Built-Up Roofing AGREMENT CERTIFICATE HOLDERS
INSULATION BOARDS Built-Up Roofing Foil Faced
INSULATION BOARDS Built-Up Roofing Refurbishment
INSULATION BOARDS Cavity Wall See also CAVITY WALL: Insulation
INSULATION BOARDS Cellular Glass Foamed Glass Bitumen Coated
INSULATION BOARDS CFC Free .
INSULATION BOARDS Cladding Applications .
INSULATION BOARDS Cold Store .
INSULATION BOARDS Curtain Walling .
INSULATION BOARDS Dimensionally Stable .
INSULATION BOARDS Drylining .
INSULATION BOARDS Drylining AGREMENT CERTIFICATE HOLDERS
INSULATION BOARDS Fire Performance Class 0
INSULATION BOARDS Fire Resistant .
INSULATION BOARDS Flooring .
INSULATION BOARDS Flooring AGREMENT CERTIFICATE HOLDERS
INSULATION BOARDS Flooring BRE Green Guide A+ Rating
INSULATION BOARDS Flooring BS EN 13165
INSULATION BOARDS Flooring Perimeter
INSULATION BOARDS Floors .
INSULATION BOARDS Foil Faced .
INSULATION BOARDS HCFC Free .
INSULATION BOARDS High Compressive Strength .
INSULATION BOARDS High Density .
INSULATION BOARDS High Impact Finish .
INSULATION BOARDS Humidity Resistant .
INSULATION BOARDS Laminated .
INSULATION BOARDS Lining .
INSULATION BOARDS Loft Decking Loft Panels BRE Green Guide A+ Rating
INSULATION BOARDS Loft Decking Loft Panels Loft Insulation
INSULATION BOARDS Mineral Wool .
INSULATION BOARDS Non-Combustible Incombustible
INSULATION BOARDS Phenolic Foam .
INSULATION BOARDS Phenolic Foam CFC Free
INSULATION BOARDS Phenolic Foam Composite Foil Faced
INSULATION BOARDS Plasterboard Faced AGREMENT CERTIFICATE HOLDERS
INSULATION BOARDS Plasterboard Faced Phenolic Foam Thermal Laminate/Insulating Laminate
INSULATION BOARDS Polyisocyanurate Foam (PIR) .
INSULATION BOARDS Polyisocyanurate Foam (PIR) AGREMENT CERTIFICATE HOLDERS
INSULATION BOARDS Polyisocyanurate Foam (PIR) Foil Faced
INSULATION BOARDS Polyisocyanurate Foam (PIR) Plywood Faced
INSULATION BOARDS Rainscreen Cladding Applications .
INSULATION BOARDS Rainscreen Cladding Applications BS 8414-1/2 BR135 Compliant
INSULATION BOARDS Rainscreen Cladding Applications BS 8414-1/2 Buildings Over 18 Metres Height
INSULATION BOARDS Rainscreen Cladding Applications BS EN 13166:2008
INSULATION BOARDS Roof Decking Grade .
INSULATION BOARDS Roof Decking Grade AGREMENT CERTIFICATE HOLDERS
INSULATION BOARDS Roof Gardens .
INSULATION BOARDS Roof Lining .
INSULATION BOARDS Roof Lining Under Purlin
INSULATION BOARDS Roof Refurbishment .
INSULATION BOARDS Roofing Applications .
INSULATION BOARDS Roofing Applications AGREMENT CERTIFICATE HOLDERS
INSULATION BOARDS Roofing Applications BRE Green Guide A+ Rating
INSULATION BOARDS Roofing Applications Built-Up Systems
INSULATION BOARDS Roofing Applications Cut-to-Falls
INSULATION BOARDS Roofing Applications Flat Roof
INSULATION BOARDS Roofing Applications Flat Roof Refurbishment
INSULATION BOARDS Roofing Applications Flat Roof Tapered
INSULATION BOARDS Roofing Applications Flat Warm Roof
INSULATION BOARDS Roofing Applications Foil Faced
INSULATION BOARDS Roofing Applications Green Roof
INSULATION BOARDS Roofing Applications Pitched Roofs
INSULATION BOARDS Roofing Applications Pitched Warm Roof
INSULATION BOARDS Roofing Applications Protected Membrane Systems
INSULATION BOARDS Roofing Applications Rafter Infill
INSULATION BOARDS Roofing Applications Refurbishment Rafter Infill
INSULATION BOARDS Roofing Applications Single Ply Roofing
INSULATION BOARDS Roofing Applications Single Ply Roofing FM Approved
INSULATION BOARDS Roofing Applications Single Ply Roofing Refurbishment
INSULATION BOARDS Roofing Applications Tapered System
INSULATION BOARDS Roofing Applications Warm Roof
INSULATION BOARDS Rot Proof .
INSULATION BOARDS Sarking Board .
INSULATION BOARDS Sarking Board AGREMENT CERTIFICATE HOLDERS
INSULATION BOARDS Soffit Board Lining
INSULATION BOARDS Steel Frame Applications .
INSULATION BOARDS Steel Framing Applications .
INSULATION BOARDS Structural Ceiling Applications .
INSULATION BOARDS Thermal Upgrade .
INSULATION BOARDS Timber Frame Applications .
INSULATION BOARDS Timber Frame Applications AGREMENT CERTIFICATE HOLDERS
INSULATION BOARDS Underfloor Heating .
INSULATION BOARDS Underfloor Heating Battened Floor
INSULATION BOARDS Underfloor Heating Floating Floor
INSULATION BOARDS Underfloor Heating Foil Backed
INSULATION BOARDS Underfloor Heating Screeded Floor
INSULATION BOARDS Underfloor Heating Timber Suspended Floor
INSULATION BOARDS Underfloor Heating Warm Water Systems
INSULATION BOARDS Wall Lining Insulating
INSULATION BOARDS Walls .
INSULATION BOARDS Zero ODP .
INSULATION EXTERNAL BOARD Polystyrene EPS Graphite/Carbon Enhanced
INSULATION EXTERNAL BOARD Steel Frame Constructions .
INSULATION PANELS Underfloor Heating .
PLASTERBOARDS Insulating .
PLASTERBOARDS Insulating AGREMENT CERTIFICATE HOLDERS
PLASTERBOARDS Thermal Laminate Bonded / Insulating Laminate Bonded
ROOF DECK Insulation .
ROOF INSULATION Roofing .
ROOF LININGS Insulation Boards .
SARKING Boards Insulating
SARKING Boards Insulating AGREMENT CERTIFICATE HOLDERS
TIMBER FRAME HOUSING Insulation .
UNDERFLOOR HEATING Boards and Panels .
UNDERFLOOR HEATING Flooring Systems Floating Floor Constructions
UNDERFLOOR HEATING Flooring Systems Suspended Floor Constructions
UNDERFLOOR HEATING Thermal Insulation .
UNDERLININGS Special Types: Polyisocyanurate (PIR)
WALL LININGS Insulating .
CAVITY-PLUS Cavity Insulation Boards
CAVITYTHERM Insulation Boards
CLOSE R Insulated Cavity Closer
HYFLOOR Insulation Boards
HYTHERM Insulation
POLYISO Insulation
POLYISO PLUS Insulation Boards
RAFTERLOC Roof Insulation Board
SAFE-R Phenolic Insulation
THIN R Polyisocyanurate Insulation Board
THIN R PLUS Insulation Board
WALK R Insulation Board
WARM R Insulation
XO22 Dry Lining Board, Insulating
XTROLINER Soffit Boards
XTROWALL Cavity Wall Insulation

Xtratherm launches Y-Value Calculator

April 2014

Xtratherm launches Y-Value Calculator

Xtratherm has launched a new online tool which will enable architects, energy assessors and designers to take full advantage of good detailing based on the Accredited Details for Construction (ACDs). The Xtratherm Y-Calculator tool is an easy to use calculator to determine the thermal bridging heat loss from non-repeating thermal bridges that must be accounted for in SAP 2009 and SAP 2012.


Technical Marketing Manager Danny Kearney explains further:

“With the changes to the new Part L and the drive towards low energy buildings, insulation performance can no longer be measured in terms of U-values alone. How that insulation joins with other components in the build and at building junctions, is a critical factor in insulation effectiveness, which in SAP it is measured as the Y-value. With the Y-value calculator we offer additional support to the building industry by making it easier to calculate the thermal bridges in a design. Within PART L greater focus is placed on improving good detailing, which – if done effectively – makes a significant difference in obtaining the desired energy ratings.”



The calculator tool is available online from April 2014 and allows users to calculate the Y-value by entering data from existing SAP calculations or directly from drawings by adding the length of each thermal bridge along with the total heat loss area of the building. Adding each junction as per table K1 in SAP, the tool will calculate the total Y-value of the dwelling. The results will show three different options: the default value will be the result if no particular details are used. A second option will show the result when using the Accredited Details, with the third option showing the Xtratherm results based on Xtratherm engineered jointed products being used.



When using Xtratherm PIR insulation in the design, results will show significant improvement, as the extremely efficient insulation material has the added benefit of engineered jointing. A full user guide has also been made available and contains further explanation on how to use the Y-value calculator. It also contains further reading on thermal bridging and details on how using Xtratherm insulation can improve the energy efficiency of a building.


Safe-R Phenolic achieves an A+ rating under the BRE Green Guide.

October 2013

Safe-R Phenolic achieves an A+ rating under the BRE Green Guide.

The Safe-R phenolic product range, produced at our Chesterfield manufacturing facility, has achieved A+ BRE Green Guide 2008 Summary Ratings.

This makes it our second product range to achieve the A+ rating, as our PIR product range Thin-R also achieved the A+ BRE Green Guide Summary Rating. The accredited rating is part of the BREEAM environmental rating scheme for buildings, which examines the relative environmental impacts of used construction materials, based on Life Cycle Assessments (LCA), using BREs Environmental Profiles Methodology 2008.


The assessed data leads to a score between A+ (best rating) to E (worst rating). These scores make it possible for the specifiers to select specifications on the basis of personal or organisational preferences or priorities, or take decisions based on the performance of a material against a particular environmental impact.

Details of the BRE Green Guide 2008 Summary Ratings can be found on the Green Book Live website by searching for Xtratherm in the company name field. This will allow you to view and download the Certificate of Approval / Environmental Profiles.
The complete range is manufactured under ISO 9001 quality standards, which include environmental and health & safety management systems.
Thin-R Certificate No: ENP 439
Safe-R Certificate No: ENP 480

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