• Looking for a smarter way to manage your heating this winter? We’ve been testing the new Aqara Radiator Thermostat W600 to see how quiet, accurate and easy it is to use around the home. Click here read our review.

Flexing Concrete Fence Post - To bodge or not

Joined
10 Mar 2025
Messages
12
Reaction score
3
Country
United Kingdom
Hi all,

I've just installed a run of concrete posts, gravel boards and fence panels.

Unfortunately the final post (near enough up against a wall) is flexing towards the top. After further inspection i've found a hairline crack just above ground level. Applying pressure to the post in one direction opens the crack a very very small amount.

I could wedge something between the wall and the post preventing it from flexing, it does feel solid when I have tried this, however this feels like a bodge. It'd be some effort to fix anything to the wall that was the exact right size.

Am I overreacting or am I right in thinking the whole thing need to come out and replaced with new. Cost isn't really a problem, it's just the last thing I feel like doing after a long and difficult install!

I have read that cracks in concrete posts are normal, however I don't think flex at the top is. Arguably it would probably be ok once the panel is in, and you'd only notice if someone were to push on it - granted people don't tend to do this.

Thanks for any advice given
 
If it has set already in the concrete in the ground then I would leave it. As its the same work digging it out now as it would be in a few years when and if forced to.

If its still going off then maybe dig just enough to remove the post so you will then have a sort of a socket to drop the new post into and then add a strong cement mix around the smaller hole.
As its next to a wall and an end post then it will probably be alright.
 
If that was my fence, I'd replace the damaged post. The cracks where the movement is will let water in and before long the reinforcing steel wire/rods will rust then expand and as such make the problem worse that before. People pushing won't be the problem but wind will.
 
Thanks Scally, this is what I was thinking too. It’s the thought of an expensive new fence going in and not being quite right. I suppose the good news is the postcrete probably isn’t too hard yet as it’s only been in the ground 24 hours
 
Thanks to you too aveatry, now I’m really stuck! Half of the problem is I know it’s not right in my mind, and will never be forgotten about!
 
Nothing wrong with that. That’s the same reason my projects take three times as long as they should.

“Finished is better than perfect” I mutter to myself while completely disregarding my own advice!

Appreciate your input
 
Thanks to you too aveatry, now I’m really stuck! Half of the problem is I know it’s not right in my mind, and will never be forgotten about!
As the concrete is not yet set then get it out. I would do it now and not wait until I have the new post before it goes off fully.

When I have had post delivered I check them for cracks because they are surprisingly easy to bread if you drop them wrong
 
As the concrete is not yet set then get it out. I would do it now and not wait until I have the new post before it goes off fully.

When I have had post delivered I check them for cracks because they are surprisingly easy to bread if you drop them wrong
Just had a look and it’s still pretty powdery so I might be in luck. I think that seals it then. The post must come out. Just glad I didn’t put the tools away!
 

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.


Are you a trade or supplier? You can create your listing free at DIYnot Local

 
Back
Top