Sub-frame / Deck Jacks

Deck Jack Pedestal

Pedestals that carry aluminium joists over a slab, membrane, balcony or roof terrace. They rest on the surface without fixing into it. Six heights.

From $5.90 each · incl. GST
01 Choose the height

Engineering certificates on request. The Deck Jacks system is certified against AS/NZS 1170.0, AS/NZS 1170.1 and NCC 2019. Contact us for the certificates before you order if your project needs them.

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From $5.90each · incl. GST

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Product details
  • For decks over concrete, waterproof membranes, balconies and roof terraces.
  • Sits on the surface unfixed, so a membrane is not pierced.
  • Six heights, from 20 mm fixed to 65 to 100 mm adjustable.
  • Carries the 55 x 40 mm aluminium joist in its bracket.
  • Engineering certificates available on request.

Engineering certificates on request. The Deck Jacks system is certified against AS/NZS 1170.0, AS/NZS 1170.1 and NCC 2019. Contact us for the certificates before you order if your project needs them.

Specifications
Used with 55 x 40 mm aluminium joist
Sold as Each
Installation

Set joists at 450 mm centres. Space pedestals along each joist at up to 1200 mm; 600 to 900 mm is typical. Fix the joist to the bracket with the stainless Tek screws. Where the deck's ends do not meet a wall, use double joists at the ends. Fine-tune level with 3 mm packers in the bracket. For more height, add up to two 60 mm extenders (not on the 20 mm or 24 to 28 mm pedestals). Have your installer or engineer confirm the layout for your site.

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Delivery

Delivery is priced in the cart from your postcode and confirmed at checkout. Full details are on the delivery page.

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01 / DECKING BOARDS

Grooved for hidden fixing. Square edge for the border.

02 / FIX AND FRAME

Start with your frame: timber or metal.
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