Kooltherm K10 Soffit Board

Kooltherm K10 Product Wedge

Insulation for Concrete Soffits

Kingspan Kooltherm K10 Soffit Board is a high performance, fibre-free rigid thermoset phenolic insulation core, sandwiched between an upper tissue-based facing and a lower facing of highly reflective aluminium foil autohesively bonded to the insulation core during manufacture.

Kingspan Kooltherm K10 Soffit Board is manufactured without the use of CFCs/HCFCs and has zero Ozone Depletion Potential (ODP) and low Global Warming Potential (GWP).

  • FM approved to Class 1 fire rating Class Number 4880
  • Rodent, mould, and fungi resistant
  • Fibre-free, closed cell insulation core

Product Data table
Specification Guide
Installation Instructions
CAD Drawings
Testing and Data Table
Product Data  
Thermal Conductivity (λ-Value) 0.021 W/m·K (Insulant Thickness 25 - 44 mm)
0.020 W/m·K (Insulant Thickness ≥ 45 mm)
Emittance (Foil Face) E0.14
Product Dimensions 2270 mm x 1200 mm (2.72 m2)
1200 mm x 600 mm (0.72 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
 25 mm  R1.2
 30 mm  R1.4
 40 mm  R1.9
 50 mm  R2.5
 60 mm  R3.0
 70 mm  R3.5
 80 mm  R4.0
 90 mm  R4.5

System R-values

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

Concrete Roof (Soffit) - Suspended Ceiling

View System R-value

Masonry Block Wall (140 mm)Concrete Roof (Soffit) - No Suspended Ceiling

View System R-value

Concrete Floor (Soffit) - Unenclosed Sub-Floor

View System R-value

Concrete Floor (Soffit) - Enclosed Sub-Floor

View System R-value
The soffit insulation shall be CodeMark-certified Kingspan Kooltherm K10 Soffit 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 its front surface and composite foil on its reverse surface, 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 in accordance with the instructions issued by them.

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. 

Cutting and Taping

View Instructions

CAD PDF - Flat Concrete Roof Soffit_No Suspended Ceiling

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 100 kPa at 10% compression
Water Vapour Resistance BS EN 12086:1997 / I.S. EN 12086:1998 > 100 MN·s/g

Fire Performance

Test Test Method Result
FM Class No. 4880* UBC 26-3 Class 1
Fire-resistance test of elements of construction AS 1530.4* -/240/240 (HDPE pipe)
*This approval is valid for ceiling / soffit installation only, with non-combustible walls and a floor to ceiling / soffit height restriction of 9.1 m. Please contact us for correct installation instructions.
** Testing to AS 1530.4 performed in accordance with NCC BCA C3.15 Opening for service penetrations using a 120 mm concrete soffit.

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

Do you need help and advice on your project?

Our teams are dedicated to helping you make process as easy as possible and ensure you get the right materials for your needs.

Send Us An Enquiry

Contact Us

Kingspan Insulation Asia

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

1 Commonwealth Lane




(+61) 448 39 2336