How to fix Colorbond fence to existing concrete slab?

BrightonBuilder

Hi all!

I'm planning a new fence on an existing flat concrete slab. The slab is in good condition. The fence will be straight, approximately 20m long. Half way along the fence, it will T-off for a small panel and then a gate that will latch to the house.

My question is concerned around fixing colourbond posts to the slab. I am thinking of using shark fin base plates with drilled mechanical or chemical bolts. I'm not keen on coring holes into the slab at 2.4m centres and installing footings. I might consider this at the gate post, but I'd prefer not to hire a concrete corer for one hole.

So my questions:

1) thoughts on my proposal / method?

2) alternative connection types?

3) any other thoughts or things I should consider?

Thanks in advance

Nick

MitchellMc

Welcome to the Bunnings Workshop community @BrightonBuilder. It's wonderful to have you join us, and many thanks for your question about installing a Colorbond fence.

I've spoken with Fielders, our supplier for Colorbond fencing, and their recommendation is to use the Shark fin supports. They can be Special Ordered into your local Bunnings store using product code fnpfga.

My thoughts are that the shark fins supports are engineered for this purpose, and from what I've seen, they look to be an excellent option that will save a heap of work. The only alternative I've seen to them is coring out the concrete and concreting your new posts in place.

If you'll be install the shark fins near the edge of the slab I recommend using Ankascrews instead of Dynabolts as they are less likely to crack out the edge.

Please let me know if you have any questions.

Mitchell