How to install HardieDeck

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How to install HardieDeck

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Want to know how to install HardieDeck decking? Follow these instructions and you’ll have your new HardieDeck built in no time at all.

Main components required

• HardieDeck boards

• Double winged base jointer (connects the boards to the joists)

• Snap-in top strip (snaps into base jointer after coating to conceal fasteners)

• HardieDeck edge caps (used to finish the perimeter of the deck)

• James Hardie joint sealant (used for additional support to hold boards in place)

• Sealant (for protection and choice of colour. This is not supplied by James Hardie)

Note: please read the HardieDeck installation guide and How to seal and colour your HardieDeck sealing guide for the full list of component options, further information on how to install HardieDeck and recommended sealants for different applications.

HardieDeck installation summary:

1. Decide on your final deck design.

2. Prepare and set the frame based on you desired deck layout.

3. Temporarily fix your edge cap, apply James Hardie Joint Sealant over the joists and place the first board.

4. Place the double winged base jointers over each joist and fix the screws ¾ of the way, then place the second board and tighten the screws all the way.

5. Place the next row of base jointers, then the following board and fix the base jointer all the way. Repeat the process until the deck is complete. Ensure there is a 10mm gap between the first deck board and the house.

6. Remove the temporarily fixed edge cap and seal the deck – refer to HardieDeck sealing guide for full details.

7. Install the snap-in top strips and the selected edge caps along the deck perimeter.

View the full HardieDeck range

Check out all of the products and accessories available from James Hardie.

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Health & Safety

Please make sure you use all equipment appropriately and safely when following the advice in these D.I.Y. videos. You need to be familiar with how to use equipment safely and follow the instructions that came with the equipment. If you are unsure, you may feel it is safest to consult an expert, such as the manufacturer or an expert Bunnings Team Member.

Grave health hazards are linked to asbestos, which may be in homes built up to 1990. Health hazards may result from exposure to lead-based paints in older materials and copper chromium arsenic (CCA) treated timber. For information on the dangers of asbestos, lead-based paint and CCA treated timber and tips for dealing with these materials contact your local council's Environmental Health Officer or visit our Health & Safety page. You can also use a simple test kit from Bunnings to indicate the presence of lead-based paint.
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