The Same Fence Panel Blew Out Three Times Before I Found the Real Problem

The Post Looked Fine

I dug down about eighteen inches, clearing the dirt away from the concrete footing on both sides of the post.

The wood was solid. No soft spots, no black streaks, no smell of rot. I knocked on it with the handle of my trowel and it sounded tight all the way down.

The concrete footer went down a full thirty inches—deeper than code requires in my area. It was cured hard, no cracks, no crumbling at the edges. Whoever set this post did it right.

I checked the adjacent posts for comparison. Same depth, same concrete mix, same treated lumber. Nothing visibly different.

So why was this one letting go?

The fence panel connects to the post with three horizontal rails, and those brackets were still tight. The post itself wasn’t leaning or twisted. When I pushed on it at ground level, it felt as stable as the ones on either side.

But here’s what I noticed when I stepped back and looked at the dirt I’d just pulled out of the hole.

It didn’t look like the soil everywhere else along the fence line.