04 Oct 2026
Fence Post Fitting Kit: fixing composite posts to slab or tarmac
This guide is about
Fence Post Fitting Kit - Black (1 Carton / 4 Sets)
Not every fence has soil to dig. Yard boundaries, driveway edges, paved patios and the strip between a house and a garage are usually slab or tarmac, and a post there has to be bolted down rather than set in. That is the job of the Fence Post Fitting Kit - Black (1 Carton / 4 Sets) in the fencing range.
What a set contains
- A post hat.
- A base cover.
- A mounting bracket.
- Stainless steel bolts.
One carton holds four complete sets. The listing describes the kit as suiting concrete slabs, tarmac and similar floors, and gives the single-set carton as 15.5 x 15.5 x 20.5cm. The weights and the four-set carton size read as zeroes on the listing, so those figures are not stated and the shop is the place to get them.
Matching sets to posts
One set fixes one post, so the arithmetic is simply the post count. A run needs one more post than it has bays, and the boards in this range are 180cm long.
| Run length | Bays at 180cm | Posts | Sets | Cartons of 4 |
|---|---|---|---|---|
| 1.8m | 1 | 2 | 2 | 1 |
| 5.4m | 3 | 4 | 4 | 1 |
| 9.0m | 5 | 6 | 6 | 2 |
| 12.6m | 7 | 8 | 8 | 2 |
The carton of four lines up neatly with 6" Fence Post - Black (1 Pack / 4pcs), which the kit's own listing names as its partner: one pack of posts, one carton of kits, nothing left over. The taller 8" Fence Post - Black (1 Pack / 2pcs) comes two to a pack, so a carton covers two of those packs instead.
The question to ask before you order
The two posts in this range have different sections: 8 x 8cm on the four-pack and 10 x 10cm on the taller two-pack. The kit's listing names only the 8 x 8cm post, and it does not state the bracket's internal size, the bolt length or the bolt diameter. So if you are fixing the 10 x 10cm post to a hard surface, confirm with the shop that the bracket fits before you order anything.
Two other things the listing leaves open, and both matter on the day. It names stainless steel bolts, but does not say whether anchors or plugs for the slab itself are included, and it does not state a drill size. Ask about both, and tell the shop what the surface is: a thin slab, a laid patio and a tarmac drive are not the same fixing problem.
On the day
- Set a string line first and mark every bracket position before drilling anything.
- Check the base covers and hats are all in the carton; there should be four of each.
- Dry-fit a post in its bracket before you bolt it down, then check it for plumb.
- Keep the boards off the ground until the posts are fixed and the groove spacing is confirmed.
Boards sit in the posts' grooves, listed at 20mm wide and 18mm deep, which suits the 2cm composite fencing here such as Fencing 86A - Oak 03 at two packs a bay. Delivery is free within 50 miles of the Glasgow store and £50 beyond.
If the fence is going onto a hard surface, order the Fence Post Fitting Kit - Black (1 Carton / 4 Sets) with the posts rather than after them, and get the bracket size confirmed against the post section while you are at it.