Weatherboard
Horizontally fixed external cladding board, traditionally timber but now also fibre-cement or composite, that overlaps the board below to shed water from the wall.
A traditional Australian external cladding system in which long boards are fixed horizontally to the studs or battens, with each board overlapping the one below to shed rainwater. Profiles include splayed (chamfer), shiplap, rusticated, and bevel-back. Modern weatherboards are produced in primed treated pine, fibre-cement (e.g. James Hardie Linea), engineered hardboard (e.g. Weathertex), and natural hardwood. Installation generally requires sarking, a drained cavity, and stainless or hot-dip galvanised fasteners as recommended in AS 3566. For buyers, weatherboards demand consistent set-out and accurate cutting; long lengths help avoid butt joints. Specify the priming, end-sealing, and fastener type the manufacturer requires for warranty, and ensure cavity-vent and flashing details are designed before ordering.
Values and references on this page are indicative and drawn from common industry sources. Always verify the current AS/NZS standard, manufacturer data sheet or NIAA policy publication before relying on figures for design, specification or compliance work.
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