If you can extract the stub of wood from the hole, then you could shutter up the top and add some extra concrete to raise the level of the base before fitting the new post.
Replacing fence post
May 15, 2020
Last reply: 6 years ago
25 Replies
Probably just further evidence that I'm a slob but I've raised the level by cutting the bottoms out of old plastic paint containers and dropping them over posts in situ. I have some standards though as I did remove the containers after it was set - eventually.
One of our local hire firms has a hydraulic post puller. Although the link shows it pulling an intact post with chains I recall an attachment that enables posts broken near their concrete base to be pulled
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The machine is capable of pulling the whole concrete lump out. I was contemplating using one but a post I need to get out is near the edge of the tarmac drive and I suspect the concrete extends under the edge, so it looks like I will have to do it the hard way.
Richard
Fence posts generally rot at surface level as the process requires oxygen ISTR
The original mistake was setting the post in concrete. Totally unnecessary. Use an. augur or post hole borer and back fill with some gravel and soil. I've installed about 300 yards of fencing like that and never had a problem
I have with some poorly treated timber
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