Composite fence posts query

[RrogerD]

I want to install a fence like the one in the attached pic using composite posts and rails.
Height from ground level probably 4ft. Spans, probably standard 6ft.
It will run along the length of a buried concrete slab, previously the foundation of a stone wall. The plan would be to use met-posts and bolt to the conc slab. Removing the slab is not an option.
Has anyone created one of these before?
Where can I purchase the necessaries from, in the uk?
I assume that screwing and bolting into the posts and rails is not a problem?
I'm assuming that I'll use L brackets etc for affixing the rails to the posts and some sort of staple for the mesh to the rail and posts?

 

[Wayners]

I've only done patch work to damaged fences so I can't help much.
I see fencing companies have stuff like this for sale so maybe a local yard will have some you can look at.
The guy I know that does this sort of thing deals with a company in Bristol somewhere.

Plenty of plases online selling it so contract the technical helplines would be my advice.

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[yardcalchub]

Your Metpost plan makes sense given the buried slab, though check how deep the slab sits first — a driven post shoe will bottom out on shallow concrete, in which case you'd be better coring through it with an SDS drill and setting the posts in concrete. For quantities, work in 6ft (1.83m) bays: divide the run length by 1.83 and round up to get the bays, then add one for the posts. As a worked example, a 12m run gives 12 ÷ 1.83 = 6.6, so 7 bays and 8 posts. At 4ft height you'd run two rails per bay, so that's 14 rails of about 1.83m each, plus 1.2m-high mesh in 12m length. If you core through the slab and concrete the posts in, each post wants roughly a 200mm-diameter, 600mm-deep hole, which is about 0.02m³ — roughly one 20kg bag of postcrete per post, so 8 bags for the example run. On the fixing question, pre-drill composite and use stainless fixings, as plain screws can stain it and over-tightening cracks the material.