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RAB™ Board
An innovative rigid air barrier to provide defence against wind and moisture in external facades
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A 6mm specialised fibre cement rigid air barrier that can be used beneath cladding, providing added protection against the elements.
James Hardie's durable CoreShield™ penetrating sealer technology provides a barrier that helps prevent moisture getting in, while RAB™ Board’s advanced breathable design allows vapour to escape.
RAB™ Board’s can be used in applications which require a solution which can stand up to 7kPa high wind pressures. Because RAB™ Board is made from fibre cement, unlike with some wraps, high wind pressures won’t cause tears or openings, which is especially important in taller buildings or in cyclonic regions.
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RAB™ Board is lightweight, easy to cut with a Villaboard™ Score and Snap Knife, and screw or nail to the frame, while the joints are simply taped. Classified as a Class 4 Vapour Permeable Membrane, RAB™ Board is suitable for use in Australian Climate Zones 2 to 8 in accordance with the National Construction Code (NCC) 2022.
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Product Specifications
Product Code | Length (mm) | Width (mm) | Thickness (mm) | Effective Cover Per Unit (m2) | Effective Width (mm) | Coverage Per Pack (m2) | Weight Per m2* | Weight Per Unit** | Pieces Per Pack | Pack Weight (kg)*** |
|---|---|---|---|---|---|---|---|---|---|---|
402980** | 2450 | 1200 | 6 | 2.94 | 1200 | 117.6 | 9 | 26.6 | 40 | 1080 |
405131** | 2750 | 1200 | 6 | 3.3 | 1200 | 132 | 9 | 29.8 | 40 | 1215 |
402981** | 3000 | 1200 | 6 | 3.6 | 1200 | 144 | 9 | 32.5 | 40 | 1325 |
**Unavailable in WA
* M2 weight includes on the wall product only weight taking into account effective coverage. This excludes fasteners, sealants and other accessories.
** Piece weight covers the physical product weight per plank/sheet.
*** Pack weight includes all product and packaging in a full pallet.
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All the relevant files, certifications and documents for RAB™ Board.
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Why choose Hardie™ Fibre Cement?
Modern look
Provides contemporary clean lines and pared-back aesthetics for homes with simple, bold forms.
Weather resistant
Engineered to stand up to harsh Australian environments, including coastal conditions.
Fire resistant
Will not contribute to the spread of fire.
Resistant to moisture damage
Offers dimensional stability resisting swelling, movement and warping.
Flexible colour
Pre-primed or pre-sealed and ready to paint in any colour.
Low maintenance
Easy to clean and holds on to paint well.
Resistent to termite damage
Stands up to termite attack.
Australian made
Choose Hardie™ fibre cement to support local manufacturing.
