repair rotten wood and replace decking footing

[Hewirl]

[MitchellMc]

Welcome to the Bunnings Workshop community @Hewirl. It's sensational to have you join us, and many thanks for your question about replacing a deck post.

Since you’re dealing with a rotten deck post at the concrete footer, it’s essential to address the issue promptly to maintain the deck's safety. The process involves removing the decayed post and footer and installing a new post. To do this, you’ll need to stabilise the deck using props or temporary supports while the damaged post is removed and replaced.

Given that this is an elevated deck, the risks associated with structural repairs are significant. Ensuring the deck remains stable during the process is critical to avoid injury or further damage. For this reason, I strongly recommend employing the services of a professional contractor. They will have the expertise and equipment necessary to complete the work safely and to compliance standards.

Please let me know if you have any questions.

Mitchell
 

[Hewirl]

Thanks but there are 3 posts like this and difficult to replace, can l not remove the old footings, cut the timber above the rot and extend the concrete utilising C channel or stirrups 

[MitchellMc]

Hi @Hewirl,

If the rot stops and there is enough solid material left on the post to securely attach a post support, you could cut off the rotted section and use stirrups to extend the post. Make sure the remaining timber is sound and free of any further decay.

When attaching a post support, it’s essential to use the appropriate fasteners and ensure the new section is adequately braced to maintain the structural integrity of the deck. Keep in mind that this solution is only suitable if the rot is confined to a small area and the remaining post is in good condition.

If you're uncertain about the condition of the timber or the stability of the deck, it’s always best to consult a professional. 

Mitchell