Trade Select FireSark®
$210.56
Sale price
$210.56
Regular price
$221.65
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Trade Select FireSark®
$210.56
Sale price
$210.56
Regular price
$221.65
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
Trade Select FireSark is a non-combustible roof sarking and wall wrap built for bushfire areas. E-glass fabric bonded to a 97% reflective aluminium foil with a fire resistant adhesive, 1350 mm x 30 m covering 40.5 m².
Non-combustible, not just fire retardant
Both the fibreglass fabric and the aluminium foil are not deemed combustible, flammability index is 1, and ignitability, spread of flame and heat evolved indices are all 0 with smoke developed at 2. It complies with AS 3959-2018 for all Bushfire Attack Levels including Flame Zone, and meets the Deemed-to-Satisfy provisions for non-combustible construction. On a BAL rated job that combination is the reason to specify it.
Very strong for a membrane
Tensile strength is 58 kN/m in the machine direction against a 13.0 minimum, and 26 kN/m lateral against a 10.5 minimum. Extra Heavy duty to AS/NZS 4200.1:2017. That is a large margin, and it matters on a site where the sarking may sit exposed before cladding.
Barrier and reflective performance
Class 2 vapour barrier at 0.003 µg/N·s, water barrier and air barrier. The foil face is 97% reflective with an emittance of 0.03, so it needs an air gap in front of it to contribute. It is electrically conductive, so keep it clear of wiring.
Full figures are in the table below.
Technical data
Ametalin technical data sheet (PDF)Sizes stocked
| Roll size | Area per roll | Nominal thickness |
|---|---|---|
| 1350 mm x 30 m | 40.5 m² | 0.20 mm |
Fire
| Combustibility | Not deemed combustible, both the fibreglass fabric and the aluminium foil (AS 1530.1) |
|---|---|
| Flammability index | 1, Low (AS 1530.2) |
| Ignitability index | 0 |
| Spread of flame index | 0 |
| Heat evolved index | 0 |
| Smoke developed index | 2 |
| Bushfire areas | Complies with AS 3959-2018 for all Bushfire Attack Levels up to and including Flame Zone |
| NCC | Meets the Deemed-to-Satisfy provisions for non-combustible construction |
This is the reason to choose it. The glass fabric structure blocks embers, which is what actually starts most house fires in a bushfire. Get independent advice on sarking selection before locking it into a BAL design.
Moisture and air control
| Vapour control | Class 2 vapour barrier |
|---|---|
| Vapour permeance | 0.003 µg/N·s (ASTM E96) |
| Water control | Water barrier (AS/NZS 4201.4) |
| Air control | Air barrier (ISO 6536/5) |
Classification
| Duty | Extra Heavy (AS/NZS 4200.1:2017) |
|---|---|
| Emittance | 0.90 printed side, 0.03 foil side, category RN |
| Reflectivity | 97% reflective foil face |
| Electrical conductivity | Conductive |
The foil face adds R-value only when it looks into an air cavity. Facing it into a solid layer wastes it.
Strength
| Tensile strength, machine direction | 58 kN/m (minimum 13.0) |
|---|---|
| Tensile strength, lateral direction | 26 kN/m (minimum 10.5) |
| Dry and wet delamination | Pass (AS/NZS 4201.1 and 4201.2) |
Build-up
| Layer 1 | Non-combustible E-glass fabric |
|---|---|
| Layer 2 | Fire resistant polymer adhesive |
| Layer 3 | 97% reflective aluminium foil |
Fitting notes
Install to AS 4200.2 with the foil face looking into an air cavity, which is where the reflective R-value comes from. Lap and seal the joints properly, because an ember only needs one open gap. At Extra Heavy duty it takes site handling well and can be walked on during roofing within the usual safe work rules. The foil conducts electricity, so keep it away from wiring.
Figures are taken from the Ametalin technical data sheet for FireSark, document APM-45762-1. The full manufacturer document is linked above. Ametalin 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?
It is stocked in one option, 1350 mm x 30 m. The table above lists the coverage or quantity you get.
What thermal performance does it have?
Emittance: 0.90 printed side, 0.03 foil side, category RN. Electrical conductivity: Conductive.
How does it perform in a fire?
Combustibility: Not deemed combustible, both the fibreglass fabric and the aluminium foil (AS 1530.1). Ignitability index: 0. Spread of flame index: 0. Heat evolved index: 0. Smoke developed index: 2.
Can it be used in a bushfire area?
Bushfire areas: Complies with AS 3959-2018 for all Bushfire Attack Levels up to and including Flame Zone.
How does it handle moisture?
Vapour control: Class 2 vapour barrier. Vapour permeance: 0.003 µg/N·s (ASTM E96). Water control: Water barrier (AS/NZS 4201.4). Dry and wet delamination: Pass (AS/NZS 4201.1 and 4201.2).
Does it meet Australian standards?
NCC: Meets the Deemed-to-Satisfy provisions for non-combustible construction.
How is it installed?
Install to AS 4200.2 with the foil face looking into an air cavity, which is where the reflective R-value comes from. Lap and seal the joints properly, because an ember only needs one open gap. At Extra Heavy duty it takes site handling well and can be walked on during roofing within the usual safe work rules. The foil conducts electricity, so keep it away from wiring.
Cannot see your question? Ask our team and we will get you an answer.
Figures are taken from the Ametalin technical data sheet for FireSark, document APM-45762-1. The full manufacturer document is linked above. Ametalin can change specifications without notice, so check the current sheet before specifying on a job.
