The right pergola material comes down to how much upkeep you’re prepared to take on and what the site asks of the structure. Hardwood and treated pine give the character of real timber, with a recoating cycle and decay to manage. Aluminium is finished in the factory, so there’s no recoating cycle. Plus, it’s also non-combustible. Geo Structure is Knotwood’s modular aluminium pergola system, manufactured in Australia from recyclable aluminium.
04 Nov 2026 • 6 m read • View Author
Timber or aluminium? How to choose your pergola material
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