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OMEGA LIGHT – Branz Certified Roof and Wall Membrane

Siegware

OMEGA LIGHT Roof and Wall building wrap for weathertightness is a BRANZ Certified, extremely vapour permeable (Vapour Open) roof and external walls underlay for installation directly on thermal insulation, wood composite panels or wood sheathing. Providing excellent weathertightness and high quality protection for wood and insulation. Ideal for a durable highly energy efficient build including passive house (Passivhaus) standard.

Details
Specifications
  • Roll Width: 1.5 meters
  • Roll Length: 50 Meters
  • Area: 75m²
  • Material composition: 3-layer PP fleece with two two-way acrylate adhesive strips – UV Stabilised
  • SD-value: 0.025 (+ 0,035 / – 0,01) m
  • Elongation (EN 12311-1) lengthwise: 40 – 110 %
  • Elongation (EN 12311-1) crosswise: 60 – 120 %
  • Tensile strength (EN 12311-1) lengthwise: 305 (±40) N / 50 mm
  • Tensile strength (EN 12311-1) crosswise: 225 (±20) N / 50 mm
  • Tear propagation resistance (EN 12310-1) lengthwise: 170 (-17/+30) N
  • Tear propagation resistance (EN 12310-1) crosswise: 230 (±50) N
  • Thickness: 0.6 mm Temperature resistance: -40–80 (short-term 100 °C) °C
  • Weight: 145 (±5) g/m²
  • Colour: Anthracite
  • Resistance to water flow (EN 1928): W1
  • Fire performance (EN 13501-1 / EN 11925-0): E
Scope of use
  • Pitched roofs
  • Ventilated closed facades
  • Installation directly on the thermal insulation or the wood sheathings
Features
  • Anti Glare
  • Anti Slip
  • UV-Stabalised
  • 3-layer fleece combination, very tough and durable during installation and on the job site
About the Brand: Isocell

Based in Austria, Isocell is a prestigious, well known and trusted brand across Europe, they specialise in building airtightness systems, from high performing certified building wraps and membranes, to specialty tools, sealants, adhesives and more.

Siegware is the official and exclusive partner of Isocell in Australia.

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About the
Seller

Founded in 2009, we began by supplying Siegenia hardware to Australia’s emerging energy-efficient window market. Over time, our business has evolved to offer a carefully selected range of premium European-engineered hardware and construction consumables for architectural and low-energy building applications.

Today, we work closely with architects, designers, window and door fabricators, and builders across Australia and New Zealand, supporting projects that demand precision, durability, and performance—without compromising timelines. By maintaining significant stock levels in our local warehouse, we help ensure reliable availability and fast turnaround when it matters most.

Our reputation is built on the quality of our products and the strength of our service. With deep industry experience, we provide practical technical support, dependable supply, and solutions informed by European innovation—delivering real, long-term value for our customers.

Verified ArchiPro Member1 year · Since 2025