Kingspan Kooltherm K17 Insulated Plasterboard

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Kingspan Kooltherm K17 Insulated Plasterboard Wall Lining

$1,987.00

GST inclusive

Opening Offer: 5% off orders over $1,000, 7% over $2,500, 10% over $4,000. Ends 30 November. Offer details

Size

Dispatch: Most orders are processed the same day. Metro delivery: Usually 1–3 business days. We do our best to get most items out on the next business day.

Delivery to VIC and NSW: $55 in metro Melbourne and metro Sydney, $99 in the outer ring around both cities, $149 anywhere else in the two states · Local pickup from Epping, VIC by arrangement · Shipping details

Kooltherm K17 Insulated Plasterboard is Kingspan's dry-lining board: a fibre-free, closed cell phenolic core bonded to 10 mm tapered edge plasterboard, so one sheet insulates and lines the inside face of a wall. Seven thicknesses from 35 to 90 mm, R1.15 to R3.70, made in Australia.

Reading the sizes

Thickness is overall, plasterboard included, so a 35 mm board carries 25 mm of insulation. The option R-value is the board alone. Bonded to 150 mm concrete, Kingspan declare a wall total of RT1.4 at 35 mm up to RT3.8 (heat flow in) at 90 mm, and energy assessments use that total. Our R-value guide explains the difference.

Where it suits

K17 is designed for adhesive bonding to dry brick, block or concrete walls free from moisture penetration, and can also be screwed to masonry, battens or framing. The face is gypsum, so it must not be used to isolate dampness or in continuously damp or humid conditions. It carries a Group 1 NCC fire classification, but Type A and B fire-resisting walls in Class 2 to 9 buildings need a Performance Solution.

Ordering and storage

Boards come in Kingspan's full packs, 12 boards at 35 mm down to 4 at 80 and 90 mm, and each option shows the m² per pack. Every size is made to order, about 10 business days. The 2400 x 1200 mm board comes in all seven thicknesses, the 3000 and 3600 mm lengths in some only. Store packs inside and never fix a wet board. Full figures are in the table below.

Technical data

Kingspan technical data sheet (PDF)

Kingspan · Fibre-free closed cell phenolic insulation bonded to 10 mm tapered edge gypsum plasterboard · Insulated dry-lining for the inside face of brick, block and concrete walls, adhesive bonded or mechanically fixed, and for framed or battened walls application

Sizes stocked

Thickness	Insulant	Board size	Product R-value	Boards per pack	m² per pack	Product code	Supply
35 mm	25 mm	2400 x 1200 mm	R1.15	12	34.56 m²	100000036607	Made to order, about 10 business days
40 mm	30 mm	2400 x 1200 mm	R1.35	10	28.8 m²	100000039642	Made to order, about 10 business days
50 mm	40 mm	2400 x 1200 mm	R1.80	8	23.04 m²	100000036608	Made to order, about 10 business days
60 mm	50 mm	2400 x 1200 mm	R2.35	6	17.28 m²	100000036787	Made to order, about 10 business days
70 mm	60 mm	2400 x 1200 mm	R2.80	5	14.4 m²	100000039083	Made to order, about 10 business days
80 mm	70 mm	2400 x 1200 mm	R3.25	4	11.52 m²	100000073686	Made to order, about 10 business days
90 mm	80 mm	2400 x 1200 mm	R3.70	4	11.52 m²	100000047684	Made to order, about 10 business days
35 mm	25 mm	3000 x 1200 mm	R1.15	12	43.2 m²	100000038791	Made to order, about 10 business days
40 mm	30 mm	3000 x 1200 mm	R1.35	10	36 m²	100000036986	Made to order, about 10 business days
50 mm	40 mm	3000 x 1200 mm	R1.80	8	28.8 m²	100000065257	Made to order, about 10 business days
60 mm	50 mm	3000 x 1200 mm	R2.35	6	21.6 m²	100000065258	Made to order, about 10 business days
90 mm	80 mm	3000 x 1200 mm	R3.70	4	14.4 m²	100000046099	Made to order, about 10 business days
35 mm	25 mm	3600 x 1200 mm	R1.15	12	51.84 m²	100000036935	Made to order, about 10 business days
50 mm	40 mm	3600 x 1200 mm	R1.80	8	34.56 m²	100000036784	Made to order, about 10 business days
60 mm	50 mm	3600 x 1200 mm	R2.35	6	25.92 m²	100000038951	Made to order, about 10 business days

Thermal, board on its own

Declared product R-value	At 23°C, for the nominal thickness including the plasterboard (see sizes above)
Thermal conductivity, insulant 25 to 44 mm	0.023 W/m.K at 23°C
Thermal conductivity, insulant 45 mm and over	0.022 W/m.K at 23°C
Thermal conductivity, 10 mm plasterboard	0.17 W/m.K at 23°C
Test standards	AS/NZS 4859.1:2018 / ASTM C518-2017

Total R-value of the wall, adhesive bonded (heat flow in / out)

35 mm	150 mm concrete RT1.4 / RT1.4; 140 mm masonry block RT1.4 / RT1.5
40 mm	150 mm concrete RT1.6 / RT1.7; 140 mm masonry block RT1.6 / RT1.7
50 mm	150 mm concrete RT2.0 / RT2.1; 140 mm masonry block RT2.0 / RT2.1
60 mm	150 mm concrete RT2.5 / RT2.6; 140 mm masonry block RT2.6 / RT2.7
70 mm	150 mm concrete RT3.0 / RT3.1; 140 mm masonry block RT3.0 / RT3.2
80 mm	150 mm concrete RT3.4 / RT3.6; 140 mm masonry block RT3.4 / RT3.6
90 mm	150 mm concrete RT3.8 / RT4.0; 140 mm masonry block RT3.9 / RT4.1
Calculation basis	AS/NZS 4859.2:2018 & NZS 4214:2006, NCC 2022 energy provisions
Applies to	NCC Volume One Class 2 to 9 and Volume Two Class 1 and 10a buildings

These are totals for the whole wall, so they are the figures to compare with the NCC wall requirement, not the board R-value.

Fire

NCC Group Number	Group 1 (AS 5637.1:2015 / AS ISO 9705:2003 (R2016))
SMOGRA RC	Not more than 10 m²/s² x 1000 (AS ISO 9705:2003 (R2016))
Fire-resisting construction	Kingspan's examples suit NCC Class 1 and 10a housing and Type C walls in Class 2 to 9 buildings
Type A and B walls, Class 2 to 9	A Performance Solution is required

The CodeMark ties the Group 1 rating to a compliant plasterboard facing.

Vapour and moisture

Water vapour transmission	More than 35 MN.s/g (ASTM E96 Part B-2016)
Plasterboard vapour resistivity for condensation risk calculations	50 MN·s/g·m
Vapour control	Resistant to the passage of water vapour
Damp conditions	Not for isolating dampness or for continuously damp or humid conditions

Give the plasterboard resistivity figure to whoever runs the condensation risk calculation for the wall.

Material and handling

Insulation core	Fibre-free rigid thermoset closed cell phenolic
Front facing	Tapered edge gypsum based plasterboard, 10 mm nominal
Reverse facing	Tissue based, autohesively bonded to the core
Compressive stress (insulant)	On average exceeds 100 kPa at 10% compression (AS 2498.3:1993)
Board orientation	Horizontal or vertical
Cutting	Fine toothed saw, or sharp knife through the insulation and back paper, then snap face down
Packaging	Packs, labelled and shrink-wrapped in polythene
Storage	Inside a building where possible; outdoors, stack clear of the ground and cover; do not use boards that have got wet
Solvents	Core is not resistant to some solvent-based adhesives, particularly those containing methyl ethyl ketone
Hazard classification	Not classified as hazardous (Safe Work Australia criteria)

Compliance

Standards	NCC and AS/NZS 4859.1:2018 compliant
CodeMark	Certificate CM20045 (SAI Global), BCA 2022, 35 to 90 mm, adhesive bonding, valid to 14/12/2026
Installation	AS 3999:2015 Bulk thermal insulation, Installation
Electrical	AS 3000:2018; cable ratings where insulation partly surrounds cables to AS/NZS 3008.1:2017
Global GreenTag	GreenRate Level C, licence KIN:KO03:2024:GR, valid to 23 January 2027
Warranty	10 years from installation against manufacturing defects, residential and commercial, subject to Kingspan's warranty terms
Made in	Australia (Kingspan plant at Somerton, VIC)

Fitting notes

Install to AS 3999:2015, with wiring to AS 3000:2018. For adhesive bonding the wall must be brick, block or concrete, dry, structurally sound and free from oil, grease, paint or release agent. Run a continuous bead of construction adhesive around the wall and ceiling junctions and around openings, then apply dabs about 30 mm across at 300 mm centres both ways, keeping them about 25 mm in from board joints. Tap each board back with a straightedge and keep the vertical edge plumb. Once the adhesive has set, add six mechanical fixings per board, 15 mm in from the edge with a nominal 25 mm embedment into the wall. Where an adhesive bond is not suitable or tiles will go on, fix to the masonry with anchors embedded at least 25 mm and screws at no more than 600 mm horizontal and 300 mm vertical centres. On frames or battens at 600 mm maximum centres, use drywall screws at 300 mm centres, closer at 200 mm on external corners, with 10 mm penetration into metal or 25 mm into timber. Set a 5 mm packer at the base of the wall and replace it with flexible sealant before the skirting goes on. Do not use adhesives containing methyl ethyl ketone. Joint the tapered edges to the plasterboard maker's procedure.

Figures are taken from the Kingspan technical data sheet for Kooltherm K17 Insulated Plasterboard, KIAU0024 Issue 28, October 2024, with compliance details from CodeMark certificate CM20045 and Global GreenTag certificate KIN:KO03:2024:GR, the hazard classification from the Kooltherm safety data sheet KIAU0179 Third Issue, February 2024, and the warranty terms from the Kooltherm product warranty KIAU0190 Sixth Issue, April 2024. Pack quantities, product codes and the 3000 and 3600 mm board lengths come from the supplier's Kingspan product list; the data sheet itself lists the 2400 x 1200 mm board. The manufacturer document is linked above. Kingspan can change specifications without notice, so check the current sheet before specifying on a job.

Common questions

Is the thickness the insulation or the whole board?

The whole board. Each thickness includes the 10 mm plasterboard face, so a 35 mm board is 25 mm of phenolic insulation plus 10 mm of plasterboard.

What R-value does the finished wall get?

The option label shows the board's own R-value, R1.15 at 35 mm up to R3.70 at 90 mm. Bonded to a 150 mm concrete wall, Kingspan declare Total R-values from RT1.4 at 35 mm to RT3.8 heat flow in at 90 mm, and on a 140 mm masonry block wall from RT1.4 to RT3.9. The table below lists every thickness.

Can it go on a damp wall?

No. The face is gypsum plasterboard, and Kingspan say K17 should not be used to isolate dampness or in continuously damp or humid conditions. Adhesive bonding is only for masonry walls free from moisture penetration.

Do I need mechanical fixings as well as adhesive?

Kingspan recommend six mechanical fixings per board once the adhesive has set, 15 mm in from the board edge with a nominal 25 mm embedment into the wall. Boards 3 m and longer also take six.

Can it be used on fire-resisting walls?

It carries a Group 1 NCC fire classification. Kingspan's examples suit Class 1 and 10a housing and Type C fire-resisting walls in Class 2 to 9 buildings. Type A and B walls in those buildings need a Performance Solution.

Is K17 kept in stock?

No. Every size is made to order and takes about 10 business days. It is sold in full packs of 4 to 12 boards, depending on thickness.

How do I cut it?

Use a fine toothed saw, or cut through the insulation and the back paper of the plasterboard with a sharp knife, snap the board face down over a straight edge and cut the face paper. Support the sheet while cutting so it does not break.

Cannot see your question? Ask our team and we will get you an answer.

Answers use the Kingspan technical data sheet for Kooltherm K17 Insulated Plasterboard, KIAU0024 Issue 28, October 2024. Pack sizes and lead time come from the supplier's Kingspan product list.