Product Overview
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.
Features & Benefits
- Self-extinguishing behaviour: Uses patented Firecurb technology to suppress sustained burning and limit horizontal flame spread for enhanced façade safety.
- Halogen-free coating: Reduces smoke and molten droplet formation while offering a lower environmental impact compared with traditional flame-retardant systems.
- Breathable construction: Allows moisture vapour to diffuse outward while preventing wind-driven rain ingress to maintain stable wall build-ups.
- Wind and weather protection: Supports airtightness and water resistance to maintain energy performance and protect external envelope components.
- High fire performance rating: Achieves a B-s1,d0 reaction-to-fire classification for very limited contribution to fire growth in demanding applications.
- Lightweight handling: Ensures easy installation over large elevations without compromising durability or tear resistance.
- Long-term reliability: Maintains consistent protective performance in residential, commercial, and high-rise construction.
Applications
- High-rise façades: Provides flame-retardant weather protection suitable for tall buildings where enhanced fire control is required.
- Ventilated façades: Performs as a vapour-open secondary barrier behind cladding systems exposed to variable wind and moisture loads.
- Timber frame walls: Supports controlled drying and enhanced fire safety within lightweight wall assemblies.
- Commercial and residential envelopes: Delivers durable weather protection and controlled vapour movement across varied building types.
Installation Guidance
- Substrate preparation: Ensure sheathing or structural surfaces are clean and secure before fixing the membrane.
- Membrane alignment: Unroll the membrane horizontally with correct orientation to maintain declared fire and moisture performance.
- Fixing application: Use compatible fasteners or tapes to secure the membrane without overstressing the material.
- Lap detailing: Maintain consistent overlaps and seal where required to preserve airtightness and water resistance.
- Penetration sealing: Apply appropriate tapes or accessories around openings and services to maintain continuous fire and weather protection.
Compliance & Performance
- Fire classification: Rated B-s1,d0 for limited contribution to fire, low smoke generation, and controlled flame spread.
- Material specification: Manufactured from non-woven polyethylene with an integrated halogen-free flame-retardant coating.
- Moisture behaviour: Provides a vapour-open structure with a water vapour transmission of 0.015m to support drying of wall assemblies.
- Independent certification: Supported by CE marking, BBA certification, and independent performance validation.
- Important note: Always install in accordance with manufacturer guidance and relevant fire regulations to maintain declared fire and moisture performance.