Kooltherm K5 External Wall Board

Kooltherm K5 External Wallboard Product Wedge

Insulation for Use Behind Polymer Modified Renders

Kingspan Kooltherm K5 External Wall Board is a super high performance, fibre-free rigid thermoset phenolic insulation core, sandwiched between two layers of tissue based facing autohesively bonded to the insulation core during manufacture.

Kingspan Kooltherm K5 External Wall Board is manufactured without the use of CFCs/HCFCs and has zero Ozone Depleting Potential (ODP) and low Global Warming Potential (GWP).

  • CodeMark certified
  • Zero ODP
  • Fibre-free core
  • As/NZS 4859.1 compliant

Product Data table
Specification Guide
Installation Instructions
Testing and Data Table
Product Data  
Thermal Conductivity (λ-Value) 0.020 W/m·K (Insulant Thickness ≥ 45 mm)
Product Dimensions 2270 mm x 1200 mm (2.72 m2)
Product Thickness 50, 80 mm 
Other thicknesses available upon enquiry. Minimum order quantities apply

Assumptions & Key

The R-values shown are Total R-values for the building element and are calculated in accordance with AS/NZS 4859.1 and NZS 4214. Kingspan Kooltherm products are manufactured, tested and packaged in conformance with AS/NZS 4859.1. The contribution of the product Total R-values depends on installation and environmental conditions.

Product R-values

 Product Thickness  Product R-value
 50 mm  R2.5
 80 mm  R4.0

System R-values

Click on the specific application types below to view their System R-values.

Concrete Wall (150 mm)

View System R-value

Masonry Block Wall (140 mm)

View System R-value

Steel-Framed Wall

View System R-value

Timber-Framed Wall

View System R-value
The external wall insulation shall be Kingspan Kooltherm K5 External Wall Board___ mm thick comprising a CFC/HCFC–free and zero Ozone Depletion Potential (ODP) rigid thermoset phenolic insulation core with a tissue based facing on both sides manufactured under a management system certified to BS / I.S. EN ISO 9001:2008, BS / I.S. EN ISO 14001:2004 and BS / I.S. OHSAS 18001:2007 by Kingspan Insulation Limited and shall be installed by approved installers (please contact Kingspan Insulation).

Handling & Storage

The polythene packaging of Kingspan Kooltherm should not be considered adequate for long term outdoor protection. Ideally, boards should be stored inside a building. If, however, outside storage cannot be avoided, then the boards should be stacked clear of the ground and covered with a polythene sheet or weatherproof tarpaulin. Boards that have been allowed to get wet should not be used.

Kingspan Kooltherm K5 External Wall Board should be protected from getting wet during periods of inclement weather prior to the application of the weatherproof render. 

Installation Instructions
Kingspan Kooltherm K5 External Wall Board should only be installed by approved installers. For more information please call Kingspan Insulation Asia on (+65) 981 35 498, or email info@kingspaninsulation.asia
Management Standards
Standard Management System
BS / I.S. EN ISO 9001:2008 Quality Management
BS / I.S. EN ISO 14001:2004 Environmental Management
BS / I.S. ISO 45001:2018 Health and Safety Management

Product Testing
Characteristic Standard Result
Compressive Strength BS / I.S. EN 826:1996 Typically exceeds 120 kPa at 10% compression
Water Vapour Resistance BS EN 12086:1997 / I.S. EN 12086:1998 > 300 MN·s/g

Fire Performance
Test Test Method Result
Flame Spread
Heat Release
Smoke Release
AS 1530.3  Spread of Flame
Index: 0
Development ≤ 4
Fire Propagation
Surface Spread of  Flame
BS 476 Part 6
BS 476 Part 7
Class 0* 
(in accordance with the Building Regulations in England, Wales and Northern Ireland)
* Applies only to the Kingspan Kooltherm insulation core.

Environmental Data Table
Recyclability Non-contaminated insulation site waste is recyclable, but there are currently no facilities in  Australia to process returned material
Re-usability Re-usable if removed with care (long term of service expected)
Water Use No water used in Kingspan Insulation's manufacturing process
Blowing Agent Global Warming  Potential (GWP) Manufactured with a blowing agent that has low GWP
Blowing Agent Ozone Depletion  Potential (ODP) Manufactured with a CFC/HCFC-free blowing agent that has zero ODP
Packaging Contains 0% recycled product
Polythene wrap and EPS skids 100% recyclable

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Kingspan Insulation Asia

We're ready to help. For any enquiries, call (+61) 448 39 2336 or send an email to info@kingspaninsulation.asia

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(+61) 448 39 2336