Can I drill into concrete upright post to add upright wooden posts to support feathered fencing? What are the best fixings
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5 years ago
Concrete posts
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- posted
5 years ago
No. The rebar in the post is protected by the concrete over it. Without that it'll rust rapidly & destroy the post by breaking the concrete apart. Wrapping flat metal strip round the post could work.
NT
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5 years ago
+1
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5 years ago
There is metal reinforcing bar in the middle of a concrete fence post.
There are some clamp on fixings that can be purchased to fit wooden fence panels - I'll see if I can find a link sometime today.
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5 years ago
Something from the range...
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I was thinking of the rt angle fence fitting when I first replied.
Just be aware that there are different size concrete posts and different size brackets.
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5 years ago
Not "rapidly" IME. Actually the rebar is normally a bit like an immersion heater element, i.e. a hairpin loop bent into a hairpin, giving four wires a little way in from the corners. If you go into the centre of the post, you normally miss the wires and leave sufficient clearance for the concrete to remain protective. Even if you touch the metal, if you use a normal plastic rawlplug type fixing this provides a pretty effective seal once it has a screw inside it. Assuming your post isn't actually being washed by seawater.
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- posted
5 years ago
You can actually drill the posts, providing you drill the hole clear of the rebar. Usually that will mean drilling in the middle of the post.
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5 years ago
Use a spur post such as :-
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5 years ago
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might be a better solution.
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5 years ago
Depends whether there are bars of steel inside. On one of my front posts the concrete split on the top hole showing the rebar and a big chip missing. That I suspect is why posts are formed with holes already!
Brian
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5 years ago
Yes seen this done. You used to be able to get pre formed ones for this very purpose galvanised too. Brian
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5 years ago
Brian Gaff laid this down on his screen :
All such posts have to have steel reinforcing in them, the would be very weak and fragile without, even the two foot tall versions once favoured by councils around council properties for wire fencing. The usual steel is around 5 to 6mm smooth sided. A metal detector will easily find it.