RAB Board

Pre-Cladding

RAB Board
Pre-Cladding

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View the updated BRANZ Appraisal to see how RAB Board delivers on fire performance to comply with the new external fire spread regulation.

RAB Board is an all in one bracing, airtight and fire resistant fibre cement rigid air barrier. The inherent strength of RAB Board makes it an ideal product for use in shear wall design in residential or commercial specific design projects.

RAB Board is a non-combustible material which will achieve excellent fire performance, unlike traditional flexible and timber wall underlays. The unique green panel has a built in air and water resistant barrier to keep moisture out, while still allowing the moisture vapour to pass through allowing framing cavity to dry.

RAB Board has up to 60 minutes fire resistance rating and superior acoustic performance to reduce external noise. It can be exposed for up to 180 days without warping or shrinking.

How does it work?

Rigid air barriers by James Hardie work by equalising the air pressure within the external wall cavity, making the building airtight providing superior weather-tightness, structural bracing and fire protection, whereas traditional flexible wall underlay can struggle to perform in these conditions.

RAB Board is suitable for the exterior of residential and commercial buildings including those in Extra High (EH) wind zones. It is fixed directly to the framing and then vertical joints are sealed over the face. Our RAB Board is suitable for use behind all James Hardie claddings or alternative claddings such as brick, timber weatherboard and more.

RAB Board 6mm

Is a 6mm thick fibre cement sheet which is sealed on the face and edges and is suitable for use as a rigid air barrier in Extra High (EH) wind zones or in wind pressures up to 4.5kPa.

RAB Board 6mm is suitable for Specific Engineered Design projects outside the scope of NZS 3604.

RAB Board 9mm

Is a 9mm thick fibre cement sheet which is sealed on the face and edges and is suitable for use as a rigid air barrier in Extra High (EH) wind zones or in wind pressures up to 4.5kPa.

RAB Board 9mm is suitable for specific design shear wall for residential or commercial applications where the structural design require strong/stiffer shear walls.

Product profiles

6mm thickness available in:
Length:
2450mm, 2750mm or 3000mm
Width:
1200mm

9mm thickness available in:
Length:
2450mm, 2750mm or 3000mm
Width:
1200mm

RAB Board NFPA 285 fire test
RAB Board Performance That Works Commercial
RAB Board Performance That Works
“It can be used to achieve structural bracing and fire rating between dwellings which is often difficult to achieve. When used in high wind zones, it is easier to install, and allows quick enclosure – speeding up the construction process, which was important on this type of project.”
Project Manager

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