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Structural Deck Substrates

Deck boards sit on structural deck substrates, which form the foundation beneath the finished surface and must suit expected loads.

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Structural Deck Substrates


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About Structural Deck Substrates products

DecoDeck Narrow - Aluminium Decking by DECO Australia is listed here as an aluminium decking product. Compare the product dimensions and installation requirements with the project drawings, then confirm the supporting structure and fixing details before setting joist spacing.

Structural Deck Substrates are a key foundation for any robust building project. Specially designed for strength and stability, they provide the essential support for floors and roofing. Whether it’s for commercial or residential construction, these substrates ensure a solid base for any structure. ArchiPro offers a comprehensive range of Structural Deck Substrates from leading suppliers in Australia, each carefully selected for their quality and resilience to meet the demands of modern construction.

Decking foundations

LOWDECK H4 Joists by Millboard Decking is also listed. Check its specification against the required spans, deck height and site conditions, and coordinate finished levels and drainage with the adjoining threshold. Product selection should follow the project design and the manufacturers’ installation information.

What should I check when specifying hardie plank decking?

Confirm the exact product name and installation requirements with its manufacturer. The items listed here are aluminium decking and H4 joists; none is identified as Hardie plank.

Does this page list hardie deck?

The listed products are DecoDeck aluminium decking and LOWDECK H4 Joists. Check the product description and manufacturer documentation to confirm that a specified system suits the project.

How do I coordinate decking with its supporting joists?

Check the decking and joist specifications for compatible fixing details, spans and required clearances. Confirm finished levels and drainage at adjoining thresholds before construction.