Tyvek Firecurb Housewrap Breather Membrane with a 1.5m width and 50m length is a flame-retardant, vapour-permeable external membrane engineered to self-extinguish when exposed to flame. Its halogen-free Firecurb coating reduces smoke and droplet formation while maintaining minimal environmental impact.The membrane provides the same airtight, watertight, and vapour-open characteristics associated with standard Tyvek breather systems while adding enhanced flame-retardant performance for safer building envelopes.Its B-s1,d0 reaction-to-fire rating supports use in buildings of all scales, from low-rise dwellings to high-rise developments, limiting flame propagation across façades and between storeys.The patented Firecurb technology suppresses sustained burning by inhibiting ignition and causing flames to die out rapidly, contributing to safer evacuation conditions.Durable, lightweight, and compatible with ventilated façades and timber or steel frame walls, it offers dependable long-term weather protection with controlled vapour diffusion for stable internal conditions.