FIREFLY VapourFlex Non-Combustible Sarking is an extra heavy duty pliable, vapour permeable, membrane vapour barrier consisting of a layer of woven glass fabric with a hydrophobic surface.

FIREFLY VapourFlex represents a cutting-edge vapour permeable membrane for walls and roofs, fabricated to serve as a pliable, non-combustible barrier in Type A and B fire-resistant constructions, as well as across various construction types where superior passive fire safety, water ingress prevention and vapour permeability is desired. Its advanced hydrophobic treatment blocks liquid water whilst allowing water vapour diffusion within the wall structure.

Constructed with non-combustible Fortaglas weave, it boasts an Extra Heavy Duty strength classification, ensuring resilience against punctures and maintaining ember protection for all BAL zones.

Available in 1250 mm x 50 m, thickness 0.2 mm, 62.5m² per roll, 14.5kg weight per roll.

The search for the ideal sarking and pliable membrane that satisfies all critical requirements is over.

FIREFLY VapourFlex is

• Non-combustible & doesn’t melt
• Extremely hydrophobic, liquid water barrier
• Class 4 Vapour permeable
• Exhibits high tensile & tear strength for superior wind-load resistance

Download our comprehensive comparison chart to see how FIREFLY VapourFlex stacks up against other products in the market.