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700+ 5-Star Reviews
-Free Delivery £299+-15% Off Fencing Products When We Install
-Trade Accounts Available
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Closeboard panels provide privacy and protection.
Trellis supports plants and decorates outdoor areas.
Classic picket panels for charming garden fences.
Strong, natural gates for garden entryways.
Concrete posts last long and stay strong.
Wooden posts provide natural look and stability.
Boards keep fences safe from ground contact.
Natural wooden boards protect fence bases.
Quick concrete secures fence posts easily
Quality timber materials for fences and building.
Wooden sleepers for steps, borders, or landscaping.
Log cabins for relaxing, working, or adding extra space to your garden.
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Concrete Fence Posts
Give your garden fence dependable support with concrete fence posts from Cave Fencing. Concrete does not rot, making it a practical choice for homeowners who want durable supports without the need for timber preservative treatment.
Choose intermediate posts for straight runs, corner posts for changes in direction and end posts to finish the boundary. We’ll help you select the right combination of posts, panels and gravel boards, whether you’re replacing a damaged section or planning a complete new fence.
Order for delivery across Kent or collection from our Monkton yard. For a fitted project, speak to our team about supply and installation.
Choose the right post for each position
A fence needs different post types depending on where it starts, turns and finishes. Sketching the layout before ordering helps you identify the correct quantities.
| Post type | Where it belongs | Listed nominal lengths |
|---|---|---|
| Intermediate concrete post | Between panels along a straight run | 5ft, 6ft, 7ft, 8ft and 9ft |
| Concrete corner post | Where the fence makes a right-angle turn | 8ft and 9ft |
| Concrete end / gate post | At the end of a run or a suitably specified gate opening | 8ft and 9ft |
These are overall post lengths, including the portion installed below ground. They do not describe the finished fence height.
Intermediate concrete fence posts
Intermediate posts have slots on opposite sides to receive neighbouring panels along a straight fence line.
They form most of the supports in a typical panel fence. Correct spacing keeps the panels properly engaged in the slots and helps create a consistent line along the boundary.
Shop intermediate concrete fence posts.
Concrete corner posts
Corner posts receive panels on adjacent faces, allowing the fence to turn through a right angle.
Mark each corner on your plan before ordering. If the boundary turns at a different angle, send us a photograph or sketch so we can discuss a suitable arrangement.
Concrete end and gate posts
An end post provides a finishing point where the panel run stops. This might be beside a path, at the edge of the garden or next to a gate opening.
For a gate, the post and attachment method must suit the gate’s size, weight and operation. Confirm the complete arrangement before ordering rather than assuming every gate can be hung from the same support.
Shop concrete end / gate posts.
How slotted concrete fence posts work
The slots receive the edges of compatible fence panels and gravel boards, holding the components in position between the posts.
This creates a modular boundary: the concrete supports can remain in place while individual timber panels are replaced, provided the posts are sound and there is enough access to remove the panels.
The fit matters. Panel thickness, slot width, board dimensions and the distance between posts all need to work together. A panel that is too tight may be difficult to install; an unsuitable loose fit can allow movement.
Choose the components as a system before fixing the post positions.
What length concrete fence post do you need?
Start with the required above-ground height, then allow for the specified installation depth below ground.
Your calculation needs to include:
- The fence panel’s actual height.
- The exposed height of any gravel board.
- Any trellis or additional components.
- The post’s usable slot height and top profile.
- The embedment and foundation requirements for the installation.
A 6ft fence panel does not need a 6ft overall post. Part of the post must be below ground, and a gravel board can raise the panel further.
For example, an 1800mm panel above a fully exposed 150mm gravel board creates a combined component height of 1950mm. The post needs to accommodate that arrangement above ground as well as the required portion below it.
This is why choosing an 8ft or 9ft post should follow the fence design, ground conditions and installation requirements. Send us the proposed panel and gravel board sizes if you would like help checking your order.
Plan the posts, panels and gravel boards together
A well-planned concrete-post fence has a consistent relationship between the panel tops, post tops and base.
Start with the finished height you want, then choose compatible components. This helps avoid posts that finish too low, unnecessary projections above the fence or panels that do not fit the slots.
Concrete posts are commonly paired with closeboard fence panels and concrete gravel boards to create a solid garden boundary.
Gravel boards separate the timber panels from direct ground contact. Where the ground level differs on either side, discuss that difference before ordering: standard fence posts and gravel boards should not automatically be treated as a retaining structure.
How many concrete fence posts will you need?
For a simple, independent straight run, allow one more post than the number of panel bays.
| Panel bays | Intermediate posts | End posts | Total posts |
|---|---|---|---|
| 3 | 2 | 2 | 4 |
| 5 | 4 | 2 | 6 |
| 8 | 7 | 2 | 9 |
| 10 | 9 | 2 | 11 |
This assumes two free ends, no gate and no existing supports being reused.
Corners change the post types required. Gates divide the run and need their own support arrangement. Mark these positions first so you order the right mix of posts rather than simply the right total.
Setting the correct distance between posts
Do not set out the fence using the panel’s nominal width alone.
With slotted posts, the panel ends sit inside the slots. The clear distance between the post faces, the depth of engagement and the distance between post centres are different measurements.
The chosen panel and gravel board must both fit the same bay. Check their actual lengths and the post manufacturer’s fitting requirements before fixing the supports.
For a replacement project, measure each opening. Posts may have moved, and a bay that appears square from a distance can be narrower at the top or bottom.
Concrete or timber fence posts?
Both can support a well-built garden fence. The choice affects its appearance, handling and how the panels are attached.
| Consideration | Concrete posts | Timber posts |
|---|---|---|
| Appearance | A visible concrete frame around the panels | A coordinated timber finish |
| Rot | Concrete does not rot | Durability depends on timber specification, treatment and conditions |
| Handling | Heavy; access and lifting need planning | Generally lighter to handle |
| Panel fitting | Compatible panels fit into slots | Panels usually require suitable fixings |
| Future panel replacement | Panels may lift out where access allows | Fixings normally need to be removed |
| Maintenance | Check for cracks, damage and movement | Check for decay, damage, movement and loose fixings |
Concrete is worth considering when avoiding post rot is a priority. Wooden fence posts may suit a project where an all-timber appearance or different fixing arrangement is preferred.
Installation depth and foundations
Post length alone does not determine whether a fence will stand securely.
The foundation needs to suit the ground, fence height, panel type and exposure. Soft or disturbed ground, an exposed position and a gate can all change the demands on a support.
Avoid treating one hole depth or one quantity of post mix as suitable for every installation. Follow the relevant product guidance and the requirements of the site.
Before digging, establish the fence line and check for underground services. Keep posts correctly aligned and supported while the foundation material sets, following its instructions before loading the fence.
If you would like the installation handled for you, we can discuss the complete project.
Concrete posts for exposed gardens
A solid panel fence catches wind, even when its posts are concrete.
The strength of the finished boundary depends on the posts, foundations, panels and connections working together. Concrete posts cannot compensate for inadequate foundations or unsuitable components.
Tell us if the fence faces open fields, sits on an exposed corner or replaces a boundary that has repeatedly failed. Understanding the position helps us discuss the fence design and supporting materials.
If an existing fence has moved, photographs of the posts and ground around their bases can help establish what needs closer inspection.
Replacing a damaged concrete fence post
Inspect the surrounding fence before replacing a single post.
Check the neighbouring panels, gravel boards and supports for damage or movement. The old foundation may need removal, and access can affect how the new post is brought in and positioned.
Cracks, broken slot edges or exposed reinforcement deserve assessment before a post is reused. A cosmetic patch should not be assumed to restore its ability to support the fence.
For an enquiry, send photographs of the damage, the full fence bay and the route into the garden. Include the panel height and any gravel board beneath it.
Gates, trellis and other attachments
Extra components need suitable fixing arrangements.
A gate introduces weight and repeated movement. Trellis adds height and can carry plant growth. Hanging baskets and other attachments place additional loads on the posts.
Do not assume reinforced concrete can be drilled or altered like timber. Check the manufacturer’s guidance and use an attachment method suited to the post and intended load.
Discuss these additions before ordering so the supports can be planned around the complete installation.
What affects the cost of concrete fence posts?
Post type, length and quantity affect the material price. Corner and end posts differ from intermediate posts in their profile and role, so compare a complete materials list.
For the overall fence, also allow for panels, gravel boards, foundation materials, delivery and installation.
Replacement work may include removing existing posts and concrete foundations. Restricted access, changes in level and difficult ground can also affect the fitted cost.
Send us a simple layout with panel heights, corners and gates marked, and we can help you work through what is needed.
Concrete fence post delivery across Kent
Cave Fencing supplies homeowners and trade customers across Kent, with collection from our Monkton yard and delivery available.
Concrete posts are long and heavy, so plan both the unloading location and the route to the fence line. Let us know about steps, narrow passages, restricted vehicle access or limited space to handle the materials.
Order posts alongside compatible panels and gravel boards to prepare the project together.
Read our delivery information or contact us about supply and installation.
Concrete fence post questions
Are concrete fence posts maintenance-free?
They do not require timber preservative, but the fence still needs periodic inspection. Check for cracks, impact damage, movement and problems with the panels or gravel boards.
Will any fence panel fit a slotted concrete post?
No. Check the actual panel width, thickness and frame profile against the post slots and bay spacing. Similar nominal sizes do not guarantee compatibility.
Do concrete fence posts stop panels blowing out?
They provide support when correctly specified and installed, but the complete fence must suit the exposure. Panel fit, any required retention measures and foundation design all matter.
Can I cut a concrete fence post shorter?
Ask before planning to cut one. Reinforcement, slot length and concrete cover need consideration, and altering the post can affect its suitability. Choose the correct manufactured length wherever possible.
Can I reuse existing concrete posts?
Potentially, if they are sound, stable and compatible with the replacement components. Check their condition, alignment, spacing and slot dimensions before ordering panels.
How much post mix will I need?
The quantity depends on the hole dimensions, post size and specified foundation. Calculate it using the chosen product’s yield information rather than assuming a fixed number of bags per post.
Can concrete posts support stacked gravel boards?
Only where the complete system is specified for that arrangement. A fence made from stacked boards and a structure retaining soil have different loading requirements. Discuss the intended use before buying.
Get the supports right from the start
The right posts give your fence its line, support and a practical basis for future panel replacement.
Whether you need one replacement post or a full set of intermediate, corner and end posts, Cave Fencing can help you plan the materials around your boundary.
Call 01843 821584 or send us your layout, measurements and photographs.