Kingspan AIR-CELL Insulbreak 90 Thermal Break Insulation
1350 mm x 22.25 m (30 m²)
$452.00
Sale price
$452.00
Regular price
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Kingspan AIR-CELL Insulbreak 90 Thermal Break Insulation
$452.00
Sale price
$452.00
Regular price
GST inclusive
Opening Offer: 5% off orders over $1,000, 7% over $2,500, 10% over $4,000. Ends 30 November. Offer details
How many do you need?
Measure the wall, ceiling or roof area and take about 10% off for studs, joists and purlins.
You need
Which covers
Total
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
Kingspan AIR-CELL Insulbreak 90 is the 9.2 mm grade of Kingspan's Insulbreak range: a cross-linked closed-cell foam core between an anti-glare foil face and a plain foil face, rated R0.25 at 23 °C. Australian made, it is a thermal break, insulation and vapour barrier for steel-framed walls and metal roofs over battens.
Why 90 and not 70
Kingspan state that Insulbreak 70 and 90 deliver the R0.20 thermal break required for NCC compliance in steel-framed buildings. On a steel-framed wall under metal cladding, 90 is declared at RT 1.4 for heat flow in and out, against RT 1.3 for the 7.2 mm Insulbreak 70. That wall result is the only system figure published for 90.
Vapour barrier, so check the wall design
It is a Class 2 vapour barrier and is not suitable as a vapour permeable membrane in NCC climate zones 4 to 8, which take in Melbourne and Sydney. Have the designer check condensation first, or use the vapour-permeable AIR-CELL Permishield XV 70 on the wall. NSW varies the relevant NCC energy clauses, so confirm with the certifier there.
Roll and fixing
Each roll is 1350 mm x 22.25 m and covers 30 m². On walls, fix it loosely outside the studs, tape butt joins with 48 mm reinforced foil tape and add AIR-CELL Spacer Biscuits, about three per m², to hold an air space behind the cladding. Keep it 100 mm clear of flues and light fittings, and away from bare cables. Full figures are in the table below.
Technical data
Kingspan technical data sheet (PDF)Sizes stocked
| Roll size | Coverage | Thickness (nominal) | Roll diameter (nominal) | Roll weight (nominal) |
|---|---|---|---|---|
| 1350 mm x 22.25 m | 30 m² | 9.2 mm | 500 mm | 10 kg |
Thermal
| Material R-value | R0.25 m²·K/W at 23 °C (ASTM C518-2017) |
|---|---|
| Thermal break | Kingspan state Insulbreak 70 and 90 deliver the R0.20 thermal break required for NCC compliance in steel-framed buildings |
| Reflectance | Anti-glare face 95%, reflective face 97% |
| Emittance | Anti-glare face E0.05, reflective face E0.03 (AS/NZS 4201.5:1994, IR Reflective) |
| IR emittance category | Category RR |
Each foil face needs an unventilated air space next to it, so a second layer adds nothing.
Thermal, declared total system R-value
| Steel-framed wall, metal cladding on AIR-CELL Spacer Biscuits | RT 1.4 heat flow in, RT 1.4 heat flow out |
|---|---|
| Calculation method | AS/NZS 4859.2:2018 and NZS 4214:2006 |
Dust on upward facing surfaces and ventilated cavities reduce the figure, and Kingspan publish no roof system figure for Insulbreak 90.
Fire
| Flammability index | ≤5, Low (AS 1530.2:1993) |
|---|---|
| Combustibility | Combustible (Kingspan AIR-CELL safety data sheet) |
| Heat limit | Can be damaged by intense heat above 105 °C; keep sparks and flame from torches, welders and cutting tools away |
| Bushfire areas | Kingspan's AIR-CELL range FAQ: suitable for buildings in BAL 12.5 through 40 (range statement, not in the Insulbreak data sheet) |
Vapour and water
| Vapour control | Vapour Barrier, Class 2 (ASTM E96 Part B:2016) |
|---|---|
| Water control | Pass, Water Barrier (AS/NZS 4201.4:1994) |
| Surface water absorbency | < 100 g/m², Low (AS/NZS 4201.6:1994) |
| Moisture shrinkage | < 0.5% (AS/NZS 4201.3:1994) |
| Dry delamination | Pass (AS/NZS 4201.1:1994) |
| Wet delamination | Pass (AS/NZS 4201.2:1994) |
| Climate zone limit | Not suitable as a vapour permeable membrane in NCC climate zones 4, 5, 6, 7 and 8 (NCC 2022 F8D3(2)) |
Melbourne and Sydney sit inside those zones, so check condensation management before using it on an external wall.
Strength and handling
| Burst strength | 1.0 kN (AS 3706.4:2012 CBR) |
|---|---|
| Maximum span | 2.4 m without support mesh |
| Load bearing | Non-load bearing; no access or work on unsupported insulation |
| Electrical conductivity | Electrically conductive, resistance ≤ 10 MΩ (AS/NZS 4200.1:2017 c.5.3.1.2) |
| Corrosion resistance | Pass (AS/NZS 4859.1:2018 App. E) |
The smooth foil can be slippery underfoot when wet.
Material
| Core | Physically cross-linked, closed-cell polyethylene foam, fibre-free |
|---|---|
| Facings | Anti-glare foil on one side, plain foil on the other |
| Health | Fibre-free, non-allergenic, non-irritant |
| Made in | Australia, manufactured at Taren Point NSW |
Compliance and warranty
| Insulation standard | Manufactured, tested and packaged in conformance with AS/NZS 4859.1:2018 |
|---|---|
| Installation standards | AS 3999:2015 and AS/NZS 4200.2:2017 unless otherwise specified |
| Building height | Thermal break for metal framed walls on low rise structures; high-rise use needs Kingspan Technical Services |
| NSW variation | NCC clause J3D3 (thermal breaks) does not apply in NSW; NSW replaces Housing Provisions 13.2.3 and 13.2.5 with its own versions |
| Management systems | ISO 9001:2015, ISO 14001:2015, ISO 45001:2018 |
| Warranty | 15 years from installation against manufacturing defects (Kingspan AIR-CELL Product Warranty) |
The warranty depends on the product being stored, handled and installed by a qualified tradesman to Kingspan's instructions.
Fitting notes
Install to Kingspan's instructions and the applicable clauses of AS 3999:2015 and AS/NZS 4200.2:2017. On a steel-framed wall, fix it loosely to the outside of the frame so it can dish into the cavity, cut it neatly around doors and windows, butt join the sheets and tape them with 48 mm reinforced foil tape, then stick AIR-CELL Spacer Biscuits to the outer face at about three per m² before the cladding goes on. Kingspan do not recommend cladding thinner than 12 mm fixed directly against it. Over roof battens, lay it ridge to gutter across the battens with no more than 25 mm into the gutter and a nominal 40 mm sag between battens. Lap side joins 150 mm, or 50 mm when taped, lap untaped end joins 600 mm, and staple or tape it to the battens until the roofing is fixed. Keep the anti-glare face toward the installer, keep 100 mm clear of hot flues and light fittings, and keep the foil away from un-insulated cables. Store rolls on end in their packaging, clean and dry, and away from wet cement and lime.
Figures are taken from the Kingspan AIR-CELL Insulbreak Thermal Break Solution data sheet, KIAU0040 Issue 19, February 2025. Fitting, bushfire and air space notes come from Kingspan's AIR-CELL Insulbreak web page, handling notes from the AIR-CELL safety data sheet KIAU0063, the climate zone and NSW notes from Kingspan's certificate of conformity for the Insulbreak range, and the warranty from KIAU0226. The manufacturer document is linked above. Kingspan can change specifications without notice, so check the current sheet before specifying on a job.
Common questions
Does Insulbreak 90 work as a thermal break on steel framing?
Yes. Kingspan state that Insulbreak 70 and 90 deliver the R0.20 thermal break required for NCC compliance in steel-framed buildings, and the material R-value of 90 is R0.25 at 23 °C. NSW has its own variations to the thermal break and building fabric clauses, so check the requirement with the certifier on NSW jobs.
What R-value do I actually get on a wall?
Kingspan declare RT 1.4 for heat flow in and RT 1.4 for heat flow out on a steel-framed wall with metal cladding. That figure is for Kingspan's wall detail, with AIR-CELL Spacer Biscuits holding an air space between the foil and the cladding. Kingspan publish no roof system figure for Insulbreak 90.
Can I use it as the wall membrane in Melbourne or Sydney?
Check with the designer first. It is a Class 2 vapour barrier and is not suitable as a vapour permeable membrane in NCC climate zones 4 to 8, which include Melbourne and Sydney. Kingspan's vapour-permeable thermal break for steel-framed walls is AIR-CELL Permishield XV 70.
How much does one roll cover?
One roll is 1350 mm x 22.25 m and covers 30 m². It is nominally 500 mm in diameter and weighs about 10 kg.
Do I need tape and spacer biscuits on a wall?
Yes. Kingspan call for butt joins taped with 48 mm reinforced foil tape and about three AIR-CELL Spacer Biscuits per m² on the outer face to form the air space behind the cladding. They do not recommend cladding thinner than 12 mm fixed directly against it.
Will two layers give a higher R-value?
No. Kingspan say each foil face must sit next to an unventilated air space, so doubling up the layers does not increase thermal performance.
Can it be used in a bushfire prone area?
Kingspan's FAQ for the AIR-CELL range says it is suitable for buildings in BAL 12.5 through 40. That statement covers the range and is not repeated in the Insulbreak data sheet, so confirm with Kingspan on a BAL-rated job.
Cannot see your question? Ask our team and we will get you an answer.
Answers use the Kingspan AIR-CELL Insulbreak data sheet KIAU0040 Issue 19, Kingspan's AIR-CELL Insulbreak web page and FAQ, and Kingspan's certificate of conformity for the Insulbreak range.
