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AIRSTOP DIVA+ Moisture Variable Membrane

Siegware

AIRSTOP DIVA+ is a fabric reinforced vapour retarder building membrane for airtightness of your building envelope. With highly variable moisture permeability (SD value from 0.5 to 30 meters) this high performance membrane, is ideal for Passivhaus and energy efficient builds of all sorts.

Details
Specifications
  • Width: 1.5m
  • Length: 50m
  • Area: 75m²
  • SD Value: 0.5m to 30m (highly variable SD value)
  • Material composition: Non-woven composite made from polymers with filament reinforcement.
  • SD-value: From 0.5 m to 30 m
  • Elongation (EN 12311-1) lengthwise: 20%
  • Elongation (EN 12311-1) crosswise: 20%
  • Tensile strength (EN 12311-1) lengthwise: 350(±20) N / 50 mm
  • Tensile strength (EN 12311-1) crosswise: 315 (±20) N / 50 mm
  • Tear propagation resistance (EN 12310-1) lengthwise: 350 N (-25/+35)
  • Tear propagation resistance (EN 12310-1) crosswise: 375 N (-25/+35)
  • Temperature resistance: -40–80 (short-term 100 °C) °C
  • Weight: 110 (±5%) g/m²
  • Colour: Transparent white w/ cutting guidelines printed in blue.
  • Storage: cool and dry
  • Fire performance (EN 13501-1 / EN 11925-0): E
Scope of use
  • Internal Walls
  • Ceilings
Features
  • Variable vapour permeability
  • Tough and durable, highly tear resistant
  • Printed cutting lines for easy and neat application
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