Red drive in post spike for erecting fencing and garden posts without digging or concreting. Four-fin steel spike locks into ground for a solid, wind-resistant fix. Available in a range of sizes to suit different post sections.
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Size
Price
QTY
50 x 300mm
£2.70£3.24
50 x 450mm
£3.28£3.94
70 x 600mm
£4.95£5.94
75 x 450mm
£4.75£5.70
Out of stock
75 x 600mm
£5.14£6.17
75 x 750mm
£5.62£6.74
90 x 600mm
£6.12£7.34
100 x 600mm
£7.02£8.42
100 x 750mm
£7.50£9.00
A red drive in post spike is one of those things you wonder how you managed without once you’ve used one on a job. No digging, no mixing concrete, no waiting for anything to cure — just drive it in, drop your post in the socket, tighten the bolt, and get on with the next one. These are used everywhere from timber panel fencing to garden pergola posts, and they save a serious amount of time compared to the traditional post-in-concrete method.
The spike itself is a four-fin steel design, which bites into the ground and resists rocking and rotation once driven. That four-fin arrangement distributes the load around the shaft and stops the spike from twisting when the post takes lateral pressure, which matters a lot in exposed locations or where the fence line takes the full brunt of the wind. The bolt-fix collar holds the post securely at the top of the spike without the post needing to contact soil at all, which dramatically extends its service life — timber posts rotting at ground level is one of the more predictable problems in fencing, and this design sidesteps it almost entirely.
Where Red Drive In Post Spikes Get Used
These are available across a wide size range, from 50 x 300mm right up to 100 x 750mm, so whether you’re putting up a light decorative fence or a full-height close-board run, there’s a size that fits. The bolt collar adjusts to grip the post tightly regardless of minor dimensional variation in the timber, which is useful because sawn timber rarely comes to exactly the size printed on the label.
The red coating is more than cosmetic — it provides a layer of protection against rust and corrosion in ground contact, keeping the spike performing through multiple seasons. For residential garden fencing, landscaping work, allotments, or light agricultural boundaries, the red drive in post spike is a genuinely practical choice that holds up well in British soil conditions. Stock a few sizes and you’re covered for most jobs that come up.
Pro Tip: Always use a post driver or a piece of sacrificial timber in the socket when hammering the spike in — striking the collar directly will deform it and you will not get a clean post fit afterwards.
Drive in post spikes are used across garden fencing, landscaping, allotment boundaries, pergola installation, and light agricultural fencing. They suit any application where timber posts need to be fixed vertically into ground without excavation. Suitable for use in most soil types including clay and compacted earth, though very stony or rocky ground can make driving difficult without pre-boring a pilot hole.
Best For
Garden fence post installation
Pergola and decking post fixing
Allotment and boundary fencing
Light agricultural post installation
Landscaping and garden structures
Available Sizes
50 x 300mm
50 x 450mm
70 x 600mm
75 x 450mm
75 x 600mm
75 x 750mm
90 x 600mm
100 x 600mm
100 x 750mm
Key Features
Four-fin steel spike for ground grip and rotation resistance
Bolt-fix collar for secure post clamping
No digging or concreting required
Keeps post ends clear of soil contact
Red coated finish for corrosion resistance
Not suitable for: Not suitable for use in very rocky or heavily stoned ground without pre-boring a pilot hole first. Not recommended for structural or load-bearing applications beyond standard fencing and garden post use.
Select the spike size to match your post section — the socket width is the key dimension. Mark your post positions, then drive the spike vertically into the ground using a post driver or a block of timber placed inside the socket to protect the collar. Check for vertical with a spirit level as you go.
Once the spike is fully driven to the appropriate depth, insert the post into the socket and tighten the bolt collar firmly to grip the post. Check vertical again after tightening, as the post can shift slightly. Job done.
Select the correct spike size to match your post cross-section
Mark out your post positions along the fence line
Place a driving block or offcut of timber inside the socket before striking
Drive the spike vertically into the ground using a post driver or lump hammer, checking for plumb regularly
Stop driving once the base of the collar is flush with or just above ground level
Insert the timber post fully into the socket
Tighten the bolt collar to clamp the post securely
Recheck vertical in both directions before finalising
What size post does each spike take?
The first dimension in the size designation refers to the post socket width. So a 75 x 600mm spike takes a 75mm post section, and a 100 x 600mm spike takes a 100mm post. The second dimension is the overall spike length. Match the socket to your post size and you're good.
Can these be used in clay soil?
Yes, clay soil is actually one of the better ground types for post spikes as it grips the fins well once driven. Very heavy or waterlogged clay can take more effort to drive through, but the end result is usually a solid fix. Avoid driving in frozen ground as it can damage the spike.
Do I need to treat the timber post if I'm using a spike?
The spike keeps the post end out of direct soil contact, which removes the main cause of ground-level rot. That said, it's still worth using pressure-treated or naturally durable timber for posts in exposed outdoor conditions. The spike does its job, but the timber still needs to be appropriate for outdoor use.
Constructed from steel with a red protective coating, these post spikes feature a four-fin ground anchor for stability and rotation resistance. The bolt-fix collar allows the post to be clamped securely at the top of the spike shaft. Available across nine size variants to suit post sections from 50mm up to 100mm square.
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