Pink Sisalation Thermal Slab
R1.5 - 2400x50x1200 (5 sheets)
$361.28
Sale price
$361.28
Regular price
$380.30
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Pink Sisalation Thermal Slab
$361.28
Sale price
$361.28
Regular price
$380.30
GST inclusive
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.
Australia-wide freight · Local pickup from Epping, VIC by arrangement. Ordering from the outback? Get in touch about deliveries to remote locations · Shipping details
Pink Sisalation Thermal Slab is a semi-rigid 32 kg/m³ glasswool board with a Sisalation Heavy Duty 450 foil laminate bonded to one face, for commercial under slab and soffit work. CodeMark certified to AS 4859.1.
Four thicknesses
50 mm at R1.5, 68 mm at R2.0, 75 mm at R2.2 and 100 mm at R3.0, all 1200 x 2400 mm boards. Pack coverage runs from 14.40 m² down to 5.76 m² as the boards get thicker.
It absorbs sound as well
NRC is 0.70 at every thickness, with sound absorption of 1.00 at 250 Hz and 0.90 at 500 Hz. Under a slab or on an exposed soffit in a carpark or plant room, that is a genuine second reason to specify it rather than a footnote.
Limits worth reading before you order
The foil facing is a vapour barrier, so it is not the product where a vapour permeable layer is required. It must be kept dry at all times, before, during and after installation, and it is not suitable where high internal humidity is present for long periods. Do not modify the board, because that can void both its suitability and its compliance.
Fire
Group 1 to AS 5637.1. The unfaced 32 kg glasswool is non-combustible to AS 1530.1, and the facing has a flammability index of 5 or lower. Ignitability, spread of flame and heat evolved are 0, smoke developed is 2.
Full figures are in the table below.
Technical data
Fletcher technical data sheet (PDF)Sizes stocked
| R-value | Thickness | Sheet size | Sheets per pack | Coverage per pack | Product code (old / new) |
|---|---|---|---|---|---|
| R1.5 | 50 mm | 1200 x 2400 mm | 5 | 14.40 m² | 941107 / 4005602 |
| R2.0 | 68 mm | 1200 x 2400 mm | 3 | 8.64 m² | 941110 / 4005605 |
| R2.2 | 75 mm | 1200 x 2400 mm | 3 | 8.64 m² | 941108 / 4005603 |
| R3.0 | 100 mm | 1200 x 2400 mm | 2 | 5.76 m² | 941109 / 4005604 |
Thermal
| Board density | 32 kg/m³ semi-rigid glasswool |
|---|---|
| Facing | Sisalation Heavy Duty 450 foil laminate, bonded to one side |
| Maximum service temperature | 340 °C glasswool, 70 °C facing (ASTM C411/C447) |
| Thermal rating method | Complies with AS/NZS 4859.1 |
Fire
| Group number | Group 1 (AS 5637.1) |
|---|---|
| Combustibility | Non-combustible for the unfaced 32 kg glasswool component (AS 1530.1) |
| Flammability index of the facing | 5 or lower (AS/NZS 1530.2) |
| Ignitability index | 0 |
| Spread of flame index | 0 |
| Heat evolved index | 0 |
| Smoke developed index | 2 |
| Heat release rate and SMOGRA | Under 100 (AS ISO 9705) |
Group 1 is the classification that lets this board be used as an exposed ceiling lining. Early fire hazard indices tested to AS/NZS 1530.3.
Acoustic
| NRC | 0.70 at every thickness |
|---|---|
| αw | 0.25 |
| Sound absorption at 250 Hz | 1.00 |
| Sound absorption at 500 Hz | 0.90 |
Absorption measured to AS ISO 354 on the silver reflective face. Low frequency absorption improves with thickness, from 0.35 at 125 Hz on the 50 mm board to 0.85 on the 100 mm.
Material and handling
| Composition | Glasswool made from up to 80% recycled glass, FBS-1 bio-soluble |
|---|---|
| Moisture absorption | Under 0.2% by volume after four days at 50 °C and 95% relative humidity |
| Fungi resistance | Pass, no growth (ASTM C1338-14) |
| Ozone depleting substances | None used in manufacture |
Limits of use
| Weather | Must be kept dry at all times, before, during and after installation |
|---|---|
| Humidity | Not suitable where high internal humidity is present for long periods |
| Vapour | The foil facing is a vapour barrier, so do not use it where a vapour permeable facing is called for |
| Modification | Do not modify the board, since that can void both suitability and compliance |
Compliance
| Certification | CodeMark certified to AS 4859.1 for thermal performance |
|---|---|
| NCC 2022 thermal | AS/NZS 4859.1 per Volume 1 J4D3(1) and ABCB Housing Provisions 13.2.2 |
| NCC 2022 linings | Meets the Group number requirements of Volume 1 S7C4 for wall and ceiling linings |
| NCC 2022 indices | Does not exceed the spread of flame or smoke developed limits in Volume 1 S7C7 |
Compliance applies when the product is correctly specified and installed.
Fitting notes
Fixed to the underside of a concrete slab or soffit with the foil face left showing, so the board does both jobs at once, thermal and acoustic, with no separate lining. Set out the 1200 x 2400 sheets so the joints land on a fixing line and butt them tight, since an open joint shows up badly on an exposed soffit. Handle the boards by the edges to keep the foil unmarked. Keep them dry from delivery through to completion. Wet glasswool loses R-value and the facing can lift.
Figures are taken from the Fletcher Insulation technical data sheet for Pink Thermal Slab. The full manufacturer document is linked above. Fletcher can change specifications without notice, so check the current sheet before specifying on a job.
Common questions
What sizes are stocked and how much does each one cover?
4 options are stocked, running from R1.5 to R3.0. The table above lists each one with the coverage or quantity you get.
What thermal performance does it have?
Maximum service temperature: 340 °C glasswool, 70 °C facing (ASTM C411/C447). Thermal rating method: Complies with AS/NZS 4859.1. NCC 2022 thermal: AS/NZS 4859.1 per Volume 1 J4D3(1) and ABCB Housing Provisions 13.2.2.
How does it perform in a fire?
Combustibility: Non-combustible for the unfaced 32 kg glasswool component (AS 1530.1). Ignitability index: 0. Spread of flame index: 0. Heat evolved index: 0. Smoke developed index: 2.
What acoustic performance can I expect?
Sound absorption at 250 Hz: 1.00. Sound absorption at 500 Hz: 0.90.
How does it handle moisture?
Moisture absorption: Under 0.2% by volume after four days at 50 °C and 95% relative humidity. Fungi resistance: Pass, no growth (ASTM C1338-14). Vapour: The foil facing is a vapour barrier, so do not use it where a vapour permeable facing is called for.
Does it meet Australian standards?
Certification: CodeMark certified to AS 4859.1 for thermal performance. NCC 2022 linings: Meets the Group number requirements of Volume 1 S7C4 for wall and ceiling linings. NCC 2022 indices: Does not exceed the spread of flame or smoke developed limits in Volume 1 S7C7.
What is it made of?
Composition: Glasswool made from up to 80% recycled glass, FBS-1 bio-soluble.
How is it installed?
Fixed to the underside of a concrete slab or soffit with the foil face left showing, so the board does both jobs at once, thermal and acoustic, with no separate lining. Set out the 1200 x 2400 sheets so the joints land on a fixing line and butt them tight, since an open joint shows up badly on an exposed soffit. Handle the boards by the edges to keep the foil unmarked. Keep them dry from delivery through to completion. Wet glasswool loses R-value and the facing can lift.
Cannot see your question? Ask our team and we will get you an answer.
Figures are taken from the Fletcher Insulation technical data sheet for Pink Thermal Slab. The full manufacturer document is linked above. Fletcher can change specifications without notice, so check the current sheet before specifying on a job.
