Kooltherm K18 Insulated Plasterboard

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Insulated Dry-lining Plasterboard for Mechanical Fixing

Kingspan Kooltherm K18 Insulated Plasterboard is a super high performance, fibre-free rigid thermoset phenolic insulation, sandwiched between a front facing of tapered edge gypsum based plasterboard, and a reverse facing of low emissivity foil autohesively bonded to the insulation core during manufacture.

  • CodeMark certified for NZBC compliance
  • 3-in-1 insulation, dry-lining and vapour control
  • Available in a range of other selected lining materials

Product Information

Product Data table
R-values
Specification Guide
Installation Instructions
CAD Drawings
Testing and Data Table
Thermal Conductivity (λ-Value) 0.021 W/m·K (Insulant Thickness 25 - 44 mm)
0.020 W/m·K (Insulant Thickness ≥ 45 mm)
0.17 W/m·K (Plasterboard Thickness 10 mm) 
Product Dimensions 2400 mm x 1200 mm (2.88 m2)
Other dimension available upon enquiry. Minimum order quantities apply.
Product Thickness 35, 40, 50, 60, 70, 80, 90 mm
Other thicknesses available upon enquiry. Minimum order quantities apply.
Plasterboard Thickness 10 mm

Alternative lining boards, such as fibre cement sheets, can also be bonded to the insulation core to create customised finishes and facings in our Kingspan Kooltherm K18+ Insulated Lining Board range. Please contact us for more information.

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 (inc. Plasterboard)  Product R-value
 35 mm  R1.3
 40 mm  R1.5
 50 mm  R2.0
 60 mm  R2.6
 70 mm  R3.1
 80 mm  R3.6
 90 mm  R4.1

System R-values

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

Residential Tiled Roof (Raked Ceiling)

View System R-value

Brick Veneer Wall

View System R-value

Steel-Framed Wall

View System R-value

Timber Framed Wall

View System R-value
The wall dry-lining insulation shall be Kingspan Koolther K18 Insulated Plasterboard___ mm thick, comprising a CFC/HCFC–free and zero Ozone Depletion Potential (ODP) rigid thermoset phenolic insulation core with 10 mm plasterboard facing bonded to its front surface and a composite foil facing 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.

A Project Specific Warranty provided by Kinspan Insulation must be submitted.

Specify with:
* Applies only to the Kingspan Kooltherm K10 insulation board used in the manufacture of this composite insulated plasterboard product.

Handling & Storage

View Instructions

Dry Wall Plasterboard

View Instructions

Mechanical Fixing to Timber Joists or Rafters

View Instructions

Mechanical Fixing to Vertical Timber Framing / Battens

View Instructions

Mechanical Fixing to Metal Furring Systems

View Instructions

PDF Format

CAD PDF - Residential Tiled Roof Raked Ceiling_Kooltherm

CAD PDF - Residential Tiled Roof Exposed Beam_Kooltherm

CAD PDF - Brick Veneer Wall_Kooltherm K18

CAD PDF - Brick Veneer Wall_AIR-CELL_Kooltherm K18 Combination

CAD PDF - Steel Framed Wall_Kooltherm K18

CAD PDF - Steel Framed Wall_AIR-CELL_Kooltherm K18 Combination

CAD PDF - Timber Framed Wall_Kooltherm K18

DWG Format

CAD DWG - Residential Tiled Roof Raked Ceiling_Kooltherm

CAD DWG - Residential Tiled Roof Exposed Beam_Kooltherm

CAD DWG - Brick Veneer Wall_Kooltherm K18

CAD DWG - Brick Veneer Wall_AIR-CELL_Kooltherm K18 Combination

CAD DWG - Steel Framed Wall_Kooltherm K18

CAD DWG - Steel Framed Wall_AIR-CELL_Kooltherm K18 Combination

CAD DWG - Timber Framed Wall_Kooltherm K18

Management Standards

Standard Management System
ISO 9001:2015 Quality Management
ISO 14001:2015 Environmental Management
OHSAS 18001:2007 Health and Safety Management
ISO 50001:2011 Energy Management 

Applies only to the Kingspan Kooltherm K10 insulation board used in the manufacture of this composite insulated plasterboard product.

Product Testing

Characteristic Standard Result
Compressive Stress AS 2498.3 Typically exceeds 100 kPa at 10% compression
Water Vapour Resistance BS EN 12086:1997 / I.S. EN 12086:1998 > 100 MN·s/g

For the purpose of calculation of condensation risk, the resistivity of the plasterboard component of the product should be taken as 50MN·s/g·m.

Fire Performance

Test Test Method Result
Ignitability
Flame Spread
Heat Release
Smoke Release
AS 1530.3  Spread of Flame Index: 0
Smoke Development: ≤ 3*

* Applies only to the Kingspan Kooltherm K10 insulation board used in the manufacture of this composite insulated plasterboard product.

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

Latest Case Studies

Do you need help and advice on your project?

If you have questions related to our products, or is seeking technical advice for your project, our customer care team is ready to help.

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Contact Us

Kingspan Insulation New Zealand

We're ready to help. For any enquiries, call 0800 1 23 23 1 or send an email to info@kingspaninsulation.co.nz.

666 Great South Road

Level 3, Building 10,

New Zealand

Ellerslie, Auckland

0800 1 23 23 1

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