FireSark® Micro-perforated

FireSark® Micro-perforated is a breathable, fire-resistant wall wrap designed for cavity wall systems that demand condensation control without compromising on bushfire compliance. With Class 4 vapour permeability, it allows moisture to escape from the structure, helping prevent mould and internal rot. Built to meet BAL-12.5 to BAL-40 requirements, this insulation wrap features micro-perforated reflective foil, an anti-glare surface, and a heavy-duty core for strength and durability. It’s perfect for builders and specifiers working on bushfire-rated or ventilated façade projects, providing radiant heat reflection, moisture management, and fire compliance in one efficient wrap. Each roll covers 40.5 m² and is UV-resistant for up to 90 days.

Product Specifications

• Thickness: Approx. 0.15 mm

• Vapour Classification: Class 4 Vapour Permeable

• Emittance: 0.03 (reflective side), 0.90 (anti-glare side)

• Fire Performance:

  • Low flammability

  • Complies with AS/NZS 1530.2 & 3

  • NCC compliant for BAL-12.5 to BAL-40 zones

• Durability: Extra Heavy Duty

• UV Resistance: Up to 90 days

• Water Barrier: Water-resistant, micro-perforated for breathability

• Air Barrier: Yes

Dimensions

• Roll Size: 1350 mm × 30 m

• Coverage Per Roll: 40.5 m²

Material Composition

• Core Material: Reinforced polymer scrim

• Facers:

  • Reflective foil layer with micro-perforations

  • Anti-glare layer for safe installation

• Perforations: Uniform micro-perforations for vapour escape, without compromising fire performance

Best Uses & Applications

• Ventilated Cavity Walls:
  Allows moisture vapour to escape while still acting as a radiant barrier — ideal for external cladding systems.

• Timber and Steel-Framed Homes in BAL Zones:
  Ensures breathability while meeting BAL-40 fire compliance, making it suitable for use behind weatherboards, bricks, and non-combustible cladding.

• Renovations and Retrofits:
  Particularly useful when installing new external cladding over existing structures — manages condensation risk and fire exposure.

• High-Performance Wall Wraps:
  Provides Class 4 vapour permeability in systems that demand both thermal and fire protection.