R4.1 Pink Ceiling Batts
R4.1 1160x430x195 (5m2/pk)
$39.42
Sale price
$39.42
Regular price
$41.50
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R4.1 Pink Ceiling Batts
$39.42
Sale price
$39.42
Regular price
$41.50
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
R4.1 Pink Ceiling Batts are FBS-1 bio-soluble glasswool from Fletcher, Australian made using up to 80% recycled content. R4.1 is a step above the common residential ceiling spec, for colder zones or for a build chasing a higher energy rating.
Fire and bushfire
Non-combustible to AS/NZS 1530.1 and rated for bushfire areas from BAL Low through to Flame Zone under AS 3959. It meets NCC 2022 clause C2D10(1) for non-combustibility, so a BAL rating on the site does not rule it out.
Sizes
Ten batts per pack in both widths at 1160 mm long. The 430 mm covers 4.99 m² per pack and the 580 mm covers 6.73 m². Australian ceiling joists are normally at 450 mm or 600 mm centres and the two widths follow that, but measure your set-out before ordering.
Check the depth
At this R-value the batt is deep enough that the roof space becomes the constraint, particularly near the eaves. Confirm the clear depth across the whole ceiling, not just at the ridge, because a batt crushed at the perimeter is not delivering its rated figure there.
On site
Cuts with a knife and friction fits between the joists. Let the batts recover to full loft first, do not compress them, keep them dry, and keep the clearances downlights and flues require.
Exact batt dimensions, pack quantities, fire indices and compliance detail are in the table below.
Technical data
Fletcher technical data sheet (PDF)Sizes stocked
| Size (L x W x thickness) | Batts per pack | Pack size | Product code (old / new) |
|---|---|---|---|
| 1160 x 430 x 215 mm | 10 | 4.99 m² | 901414 / 4006039 |
| 1160 x 580 x 215 mm | 10 | 6.73 m² | 901415 / 4006040 |
Thermal
| Material R-value | R4.1 m²K/W |
|---|---|
| Nominal thickness | 215 mm |
| Maximum service temperature | 340 °C (ASTM C411/C447) |
Fire
| Combustibility | Non-combustible (AS/NZS 1530.1) |
|---|---|
| Ignitability index | 0 |
| Spread of flame index | 0 |
| Heat evolved index | 0 |
| Smoke developed index | 0 to 1 |
| Bushfire areas | BAL Low through to Flame Zone (AS 3959) |
Early fire hazard indices tested to AS/NZS 1530.3.
Material and handling
| Composition | FBS-1 bio-soluble glasswool |
|---|---|
| Moisture absorption | Under 0.2% by volume |
| Fungi resistance | Pass, no growth (ASTM C1338-14) |
| Ozone depleting substances | None used in manufacture |
| Recycled content | Australian made using up to 80% recycled content |
Compliance
| Thermal rating | Complies with AS/NZS 4859.1 |
|---|---|
| NCC 2022 | AS/NZS 4859.1 per Volume 1 J4D3(1) and ABCB Housing Provisions 3.12.2(1) |
| NCC 2022 non-combustibility | Non-combustible per AS/NZS 1530.1, meets clause C2D10(1) |
Compliance applies when the product is correctly specified and installed.
Fitting notes
Cuts with a knife and friction fits between joists, so it holds without fixings. Keep batts at full loft and let them recover before installing. Do not compress them into the space, because a squashed batt delivers less than its rated R-value. Keep the product dry at all times, before, during and after installation.
Figures are taken from the Fletcher Insulation technical data sheet for Pink Batts Ceiling, RTDS9 Revision 7, issued 17 February 2025. 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?
2 options are stocked, running from 1160 x 430 x 215 mm to 1160 x 580 x 215 mm. The table above lists each one with the coverage or quantity you get.
What thermal performance does it have?
Material R-value: R4.1 m²K/W. Maximum service temperature: 340 °C (ASTM C411/C447). Thermal rating: Complies with AS/NZS 4859.1.
How does it perform in a fire?
Combustibility: Non-combustible (AS/NZS 1530.1). Ignitability index: 0. Spread of flame index: 0. Heat evolved index: 0. Smoke developed index: 0 to 1. NCC 2022 non-combustibility: Non-combustible per AS/NZS 1530.1, meets clause C2D10(1).
Can it be used in a bushfire area?
Bushfire areas: BAL Low through to Flame Zone (AS 3959).
How does it handle moisture?
Moisture absorption: Under 0.2% by volume. Fungi resistance: Pass, no growth (ASTM C1338-14).
Does it meet Australian standards?
NCC 2022: AS/NZS 4859.1 per Volume 1 J4D3(1) and ABCB Housing Provisions 3.12.2(1).
What is it made of?
Composition: FBS-1 bio-soluble glasswool.
How is it installed?
Cuts with a knife and friction fits between joists, so it holds without fixings. Keep batts at full loft and let them recover before installing. Do not compress them into the space, because a squashed batt delivers less than its rated R-value. Keep the product dry at all times, before, during and after installation.
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 Batts Ceiling, RTDS9 Revision 7, issued 17 February 2025. The full manufacturer document is linked above. Fletcher can change specifications without notice, so check the current sheet before specifying on a job.
