Kooltherm K17 Insulated Plasterboard

Product Code


Insulated Dry-lining Plasterboard for Adhesive Bonding

Kingspan Kooltherm K17 Insulated Plasterboard is a super high performance, fibre-free rigid thermoset phenolic insulation core, sandwiched between a front facing of tapered edge gypsum based plasterboard, and a reverse tissue based facing autohesively bonded to the insulation core during manufacture.

Kingspan Kooltherm K17 Insulated Plasterboard is manufactured without the use of CFCs/HCFCs and has zero Ozone Depleting Potential (ODP) and low Global Warming Potential (GWP).

  • Made in Australia
  • 3-in-1 insulation, dry-lining and vapour control
  • Group 1 NCC fire classification determined in a full room AS ISO 9705 test in accordance with AS 5637
  • Practical for modular construction

Product Data
Declared Thermal
Conductivity (λ-Value)
0.021 W/m.K at 23oC (Insulant thickness ≥ 45 mm)
0.023 W/m.K at 23oC (Insulant thickness 25 – 44 mm)
0.17 W/m.K at 23oC (Plasterboard Thickness 10 mm)
Product Dimensions 2400 mm x 1200 mm (2.88 m2)
Other dimension available upon enquiry. Minimum order quantities apply.
Nominal Product
Thickness (inc. Plasterboard)
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 K17+ Insulated Lining Board range. Please contact us for more information.

Technical Service

If your construction is different from those specified, and/or to gain a comprehensive R-value calculation and technical information of your project, please consult the Kingspan Insulation Technical Service Department for assistance. Call 1300 247 235 and press “2” to speak with Technical services, email technical@kingspaninsulation.com.au, or use the online contact form.

Assumption and Key
NCC 2019 prescribes different methods to determine Total R-value Calculations for Volume 1 and Volume 2. The systems noted on this page are Total R-values for the building element as required by the Energy Provisions of the National Construction Code, calculated in accordance with AS/NZS 4859.2 2018 & NZS 4214. Kingspan Kooltherm® products are manufactured, tested and packaged in conformance with AS/NZS 4859.1:2018

Fire Resistance
Examples shown are suitable for NCC Class 1 & 10a housing and Fire-Resisting Construction Type C walls in NCC Class 2 – 9 buildings. For Fire-Resisting Construction Type A & B walls in NCC Class 2 – 9 buildings a Performance Solution is required. Please contact Kingspan Insulation Technical Services on 1300 247 235 or email technical@kingspaninsulation.com.au for further guidance.

Product R-values

Product Thickness (inc. Plasterboard) Product R-value
35 mm R1.16
40 mm R1.36
50 mm R1.81
60mm R2.41
70mm R2.91
80mm R3.41
90mm R3.86


Concrete Wall (150mm)

System R-value

Product Thickness (inc. Plasterboard) Heat Flow In (Summer) Heat Flow Out (Winter)
35 mm RT1.4 RT1.4
40 mm RT1.6 RT1.7
50 mm RT2.0 RT2.1
60 mm RT2.6 RT2.8
70 mm RT3.1 RT3.2
80 mm RT3.5 RT3.7
90 mm RT4.0 RT4.2

Concrete thickness: 150 mm

Masonry Block Wall (140mm)

System R-value

Product Thickness (inc. Plasterboard) Heat Flow In (Summer) Heat Flow Out (Winter)
35 mm RT1.4 RT1.5
40 mm RT1.6 RT1.7
50 mm RT2.0 RT2.1
60 mm RT2.7 RT2.8
70 mm RT3.1 RT3.3
80 mm RT3.6 RT3.8
90 mm RT4.0 RT4.3

Masonry block wall thickness: 140 mm

Kooltherm K17 Insulated Plasterboard Model Specificaton
You can also download the comprehensive model specification here.

Specification Clause

The wall dry-lining insulation shall be Group 1 Kingspan Kooltherm K17 Insulated Plasterboard _____ mm thick, with a tested smoke obscuration of not more than 5 m2/kg, comprising a CFC/HCFC–free and zero Ozone Depletion Potential (ODP) rigid thermoset insulation core with 10 mm plasterboard facing bonded to its front surface and a tissue based 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 Pty Ltd and shall be installed in accordance with the instructions issued by them. A Project Specific Warranty provided by Kingspan Insulation must be submitted.

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

Specify with:

Handling & Storage

The packaging of Kingspan Kooltherm should not be considered adequate for outdoor protection. Boards should be stored inside a building. If, however, temporary outdoor storage cannot be avoided then the boards should be stacked flat on a level base, clear of the ground, and completely protected from inclement weather through use of a polythene sheet or weatherproof tarpaulin. Boards that have been allowed to get wet should not be used.

Resistance to Solvents
The insulation core is resistant to short-term contact with petrol and with most dilute acids, alkalis and mineral oils. However, it is recommended that any spills be cleaned off fully before the boards are installed. Ensure that safe methods of cleaning are used, as recommended by suppliers of the spilt liquid. The insulation core is not resistant to some solvent-based adhesive systems, particularly those containing methyl ethyl ketone. Adhesives containing such solvents should not be used in association with this product. Damaged boards or boards that have been in contact with harsh solvents or acids should not be used.

Kingspan Insulation products are chemically inert and safe to use. A Product Safety Information Sheet is available from Kingspan Insulation Pty Ltd.

Installation must be in accordance with AS 3999 Bulk Thermal Insulation Installation and AS 3000 Electrical Installations (Wiring Rules).

Cutting and Taping

Cutting should be carried out either by using a fine toothed saw, or by scoring with a sharp knife through the insulation and scoring the back of the plasterboard itself, then snapping the board over a straight edge and then cutting the facing on the other side. Ensure accurate trimming to achieve close-butting joints and continuity of insulation. Sheets being cut should be adequately supported to prevent breakage.

When using a fine toothed saw, ensure edges are supported to avoid excessive vibration.

When multiple cuts on a board are required, such as around windows, consider segmenting the board into smaller sections to prevent excessive movement of the board.

Dry Wall Plasterboard

Kingspan Kooltherm K17 Insulated Plasterboard can be applied utilising a variety of traditional or modern dry-lining techniques, to dry and structurally sound walls. These include the construction adhesive bonding method.

The particular system employed will depend on the construction or design of the wall to which Kingspan Kooltherm K17 Insulated Plasterboard is to be fixed.

If an acceptable adhesive bond cannot be achieved due to the wall surface, consideration should be given to a mechanically fixed option. The tapered edge to the plasterboard enables a flat seamless surface equal to traditional plaster finishes after the correct jointing procedures as per plasterboard manufacturer’s recommendation have been completed.

Construction Adhesive Bonding

This method is for applications to brick, block, or concrete masonry cavity walls which are free from moisture penetration.

  • Ensure that the wall surface to be bonded to is free from oil, grease, paint, release agent, or any contaminate that may affect the bond of the adhesive to the wall.
  • Gun apply a continuous blob of construction adhesive around perimeter wall and ceiling junctions, and around any openings, such as windows and doors, in order to provide a seal.
  • Gun apply blobs of construction adhesive to the wall or the back of the board approximately 25 mm in diameter (single squeeze), at 300 mm centres in both directions or to specific adhesive manufacturer’s instructions. Ensure that the blobs adjacent to a board joint are approximately 25 mm in from the edge to avoid bridging the joint.
  • Tap the board back firmly using a straightedge, ensuring that the vertical edge is plumb.
  • Continue dry lining in the same manner.
  • Provide temporary mechanical support to the Kingspan Kooltherm K17 Insulated Plasterboard for at least 24 hours.
  • Mechanical fixings are recommended to complement the adhesive bond. Apply 2 per board after the adhesive has set, positioned 15 mm in from the board edge and at mid height with a nominal 25 mm embedment into the wall. (Refer to fixing manufacturer instructions for more information).
  • It is recommended that mechanical fixings are positioned in the tapered edge of the boards so that they are covered when the board is finished, (e.g. joints taped and skim coating) at mid height. Boards should be fitted tight to the ceiling/joists.
Download Brochure (PDF) Download
Pricing and Where to Buy Download
Request Technical Support Download
Project Specific Warranty Download
CAD PDF – Masonry Block Wall_Kooltherm K17 Download
CAD DWG – Masonry Block Wall_Kooltherm K17 Download
BIM 2016 – Kooltherm K17 Insulated Plasterboard Download
BIM 2017 – Kooltherm K17 Insulated Plasterboard Download
BIM 2018 – Kooltherm K17 Insulated Plasterboard Download
BIM 2019 – Kooltherm K17 Insulated Plasterboard Download
PSI – Kooltherm Range Download

Management Standards

Standard Management System
ISO 9001:2015 Quality Management
ISO 14001:2015 Environmental Management
ISO 45001:2018 Health and Safety Management
ISO 50001:2011 Energy Management

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 > 35 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
Flame Spread
Heat Release
Smoke Release
AS 1530.3 Spread of Flame Index: 0
Smoke Development: ≤ 3*
NCC Group Number AS ISO 9705 Group 1
Tested in accordance with AS 5637 as required by NCC 2016, Amdt. 1.
SMOGRARC AS ISO 9705 10 m2/s2x1000

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

Environmental Data Table

Aspect Characteristic
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