Bradford Thermoseal® Breather Class 4 Wall Wrap
Bradford Thermoseal Breather Class 4 is a light-duty, perforated breather wrap with a single-sided reflective foil for residential and commercial brick veneer walls in Climate Zones 2-7 and bushfire-prone regions (BAL 12.5-FZ). This Class 4 vapour permeable wall wrap lets moisture escape so the cavity can dry, supporting insulation performance and helping protect framing.
Also suitable for cavity masonry (double brick) with a drained gap. For reduced glare on bright sites, choose Thermoseal Breather Class 4 XP, which adds a semi-reflective antiglare face.
Features and Benefits
Bradford Thermoseal Breather Class 4 helps the wall system dry by allowing water vapour to pass through, supports bulk insulation performance, and helps protect timber framing from moisture issues. The reflective foil faces the cavity to reduce radiant heat transfer across the air gap, aiding year-round comfort. A smooth backing helps keep batts seated with fewer gaps or sagging. Light and easy to handle, the wall wrap stays in place behind brick veneer walls for reliable long-term performance.
Key Features
Condensation control
Class 4 permeability lets water vapour escape, reducing moisture build-up
Thermal performance
Reflective foil facing the air gap helps reduce radiant heat
Bushfire protection
Suitable for BAL 12.5-FZ when installed to specification
Durable
Light-duty, reinforced laminate built for dependable long-term performance behind brick veneer
